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Thermo Scientific 42iQ Low Source NO-NO2-NOx Analyzer Instruction Manual
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42iQLS
Instruction Manual
Low Source NO-NO2-NOx Analyzer
117436-00 • 15Jan2018
Contents
Thermo Scientific
Chapter 1
Introduction ........................................................................................................ 1-1
iQ Series Instrument Platform............................................................. 1-1
Principle of Operation ........................................................................ 1-3
Specifications ...................................................................................... 1-5
Dimensions ......................................................................................... 1-7
Chapter 2
Installation and Setup ...................................................................................... 2-1
Unpacking and Inspection .................................................................. 2-1
Cover Removing and Replacing .......................................................... 2-2
Mounting Options .............................................................................. 2-3
Bench Mount ................................................................................... 2-3
Rack Mount ..................................................................................... 2-4
Setup Procedure .................................................................................. 2-6
Startup ................................................................................................ 2-8
Chapter 3
Operation ............................................................................................................ 3-1
Instrument Display ............................................................................. 3-1
Main Menus and Keypads ................................................................ 3-5
Numeric Keypad ........................................................................... 3-6
Alphanumeric Keypad ................................................................... 3-7
Calibration .......................................................................................... 3-9
Calibrate Backgrounds ................................................................... 3-10
Calibrate NO and NOx Background ........................................... 3-11
Calibrate Span Coefficients ............................................................ 3-13
Calibrate NO, NO2, and NOx Span Coefficient.......................... 3-15
Zero/Span Schedule ....................................................................... 3-18
Calibrate O2 Span Coefficient ........................................................ 3-20
Advanced Calibration ..................................................................... 3-21
Manual Calibration ..................................................................... 3-22
Manual O2 Calibration ............................................................... 3-30
2-Point O2 Calibration ................................................................ 3-32
Calibration History ..................................................................... 3-34
Data .................................................................................................. 3-35
View Data Log (Last Hour)............................................................ 3-36
View Data Log (Last 24 Hours) ..................................................... 3-37
View Data Log (User Defined Time) ............................................. 3-38
Advanced Data Setup ..................................................................... 3-40
Data Logging Setup .................................................................... 3-41
42iQ Low Source Instruction Manual
iii
Contents
Select Data Logging Variables ..................................................... 3-42
Streaming Data Setup ................................................................. 3-45
Select Streaming Variables ........................................................... 3-46
Settings ............................................................................................. 3-49
Health Check ................................................................................. 3-50
Status and Alarms........................................................................ 3-51
Predictive Diagnostics ................................................................. 3-75
Maintenance ............................................................................... 3-76
Preventive Maintenance .............................................................. 3-77
Change Part ................................................................................ 3-79
Maintenance History................................................................... 3-80
File Sharing and Support............................................................. 3-82
Measurement Settings .................................................................... 3-83
Averaging Time ........................................................................... 3-84
Range Mode Selection................................................................. 3-87
Range Settings ............................................................................. 3-89
Gas Mode ................................................................................... 3-91
Gas Units .................................................................................... 3-92
Advanced Measurement Settings ................................................. 3-93
Communications ......................................................................... 3-103
Wired TCP/DHCP .................................................................. 3-104
Serial RS-232/485 ..................................................................... 3-106
Analog I/O ................................................................................ 3-107
Digital I/O ................................................................................ 3-108
Email Server (SMTP) ................................................................ 3-109
Instrument Settings ...................................................................... 3-110
Instrument Setpoints ................................................................. 3-112
Alarm Setpoints......................................................................... 3-113
Display Setup ............................................................................ 3-115
Clock ........................................................................................ 3-116
Date / Time Parameters ............................................................ 3-117
Time Zone ................................................................................ 3-118
Time Server............................................................................... 3-120
Date Format.............................................................................. 3-121
Configuration .............................................................................. 3-122
Security Access Levels ................................................................... 3-123
Change Security to View Only Access ....................................... 3-125
Change Full Access Security Password ....................................... 3-126
USB Drive ................................................................................... 3-128
Firmware Update Via USB Drive .............................................. 3-129
Download Data To USB Drive ................................................. 3-130
Change USB Password .............................................................. 3-133
User Contact Information ............................................................ 3-135
Update Bootloader ....................................................................... 3-136
iv
42iQ Low Source Instruction Manual
Thermo Scientific
Contents
Chapter 4
Thermo Scientific
Calibration .......................................................................................................... 4-1
Equipment Required ........................................................................... 4-2
Zero Gas Generator.......................................................................... 4-2
Compression ................................................................................. 4-2
Drying .......................................................................................... 4-2
Oxidation ...................................................................................... 4-2
Scrubbing ...................................................................................... 4-3
Gas Phase Titrator............................................................................ 4-3
Flow Controllers ........................................................................... 4-3
Pressure Regulator ......................................................................... 4-3
Ozone Generator .......................................................................... 4-4
Diverter Valve ............................................................................... 4-4
Reaction Chamber ........................................................................ 4-4
Mixing Chamber ........................................................................... 4-4
Output Manifold .......................................................................... 4-5
Reagents ........................................................................................... 4-5
NO Concentration Standard ......................................................... 4-5
Assaying a Working NO Standard Against a NIST-traceable NO
Standard........................................................................................ 4-5
Zero Air ........................................................................................ 4-6
Dynamic Parameter Specifications for Gas Titrator .......................... 4-6
Determining GPT System Flow Conditions ................................. 4-7
Pre-Calibration ................................................................................... 4-8
Calibration .......................................................................................... 4-9
Connect GPT Apparatus to the Analyzer ....................................... 4-10
Adjust Instrument Gain ................................................................. 4-10
Set NO and NOx Backgrounds to Zero ....................................... 4-10
Calibrate the NO Channel to the NO Calibration Gas ............... 4-12
Calibrate the NOx Channel to the NOx Calibration Gas ............. 4-12
Preparing NO, NOx, and NO2 Calibration Curves ..................... 4-13
Alternative Calibration Procedure Using NO2 Permeation Tube.... 4-15
Calibration in Dual Range and Auto Range Mode ............................ 4-16
Set NO and NOx Background to Zero ........................................... 4-16
Calibrate NO Low ......................................................................... 4-17
Calibrate NOx Low ......................................................................... 4-17
Calibrate NO2 Low ........................................................................ 4-18
Calibrate NO High ........................................................................ 4-18
Calibrate NOx High ....................................................................... 4-19
Calibrate NO2 High ....................................................................... 4-19
Zero and Span Check ........................................................................ 4-20
Manual Calibration ........................................................................... 4-21
Adjust NO and NOx Backgrounds ................................................. 4-22
Adjust Span Coefficient.................................................................. 4-23
Reset Bkg to 0.000 and Span Coef to 1.000 ................................... 4-23
42iQ Low Source Instruction Manual
v
Contents
Zero/Span Schedule .......................................................................... 4-24
Next Time ..................................................................................... 4-24
Period ............................................................................................ 4-24
Zero/Span/Purge Duration Minutes .............................................. 4-25
Schedule Averaging Time ............................................................... 4-25
Background Calibration and Span Calibration ............................... 4-25
Zero/Span Ratio ............................................................................. 4-25
vi
Chapter 5
Maintenance ...................................................................................................... 5-1
Safety Precautions ............................................................................... 5-1
Fan Filter Inspection and Cleaning ..................................................... 5-1
Thermoelectric Cooler Fins Inspection and Cleaning .......................... 5-2
Capillaries Inspection and Replacement .............................................. 5-3
Pump Rebuilding ................................................................................ 5-5
Leak Test ............................................................................................ 5-8
Chapter 6
Troubleshooting................................................................................................. 6-1
Safety Precautions ............................................................................... 6-1
Troubleshooting Guide ....................................................................... 6-1
Chapter 7
Servicing ............................................................................................................. 7-1
Safety Precautions ............................................................................... 7-1
Firmware Updates ............................................................................... 7-3
Replacement Parts List ........................................................................ 7-3
Fuse Replacement ............................................................................... 7-5
Filter Replacement .............................................................................. 7-6
Fan Replacement................................................................................. 7-7
Measurement Side Removal and Replacing ......................................... 7-9
LCD Module Replacement ............................................................... 7-12
I/O Replacement ............................................................................... 7-14
Peripherals Support Board and System Controller Board
Replacement ..................................................................................... 7-16
DMC Pressure and Flow Board ........................................................ 7-17
Pump Replacement ........................................................................... 7-19
Power Supply Replacement ............................................................... 7-23
Step POL Board Replacement ........................................................... 7-25
DMC PMT Cooler and Reaction Chamber Replacement ................. 7-28
PMT Cooler Shroud Removal ....................................................... 7-28
PMT Cooler Board Replacement ................................................... 7-30
Reaction Chamber Cleaning and/or Removal ................................ 7-32
Photomultiplier Tube (PMT) Replacement ................................... 7-35
DMC Converter Replacement .......................................................... 7-38
Converter Assembly Board Replacement ........................................ 7-39
Converter Cartridge Heater Replacement....................................... 7-40
DMC Ozonator ................................................................................ 7-42
42iQ Low Source Instruction Manual
Thermo Scientific
Contents
Ozonator and Transformer Removal .............................................. 7-42
Ozonator Replacment .................................................................... 7-43
Transformer Replacement .............................................................. 7-44
Ozonator and Transformer Board Replacement ............................. 7-45
Flow Switch Replacement .............................................................. 7-46
Ammonia Scrubber Replacement ................................................... 7-47
Optional Manifold Replacement ....................................................... 7-49
Optional Solenoid Valves Removal ................................................... 7-51
Optional DMC Oxygen Sensor......................................................... 7-53
Oxygen Sensor Removal................................................................. 7-53
Oxygen Sensor Board Replacement ................................................ 7-56
Oxygen Sensor Capillary Replacement ........................................... 7-58
Oxygen Sensor Replacement .......................................................... 7-60
Ozonator DMC Install................................................................... 7-61
Thermo Scientific
Chapter 8
System Description .......................................................................................... 8-1
Reaction Chamber DMC .................................................................... 8-2
Optical Filter.................................................................................... 8-2
Photomultiplier Tube ...................................................................... 8-2
Photomultiplier Tube Cooler ........................................................... 8-2
Ozonator ............................................................................................. 8-2
Ozonator Flow Switch ..................................................................... 8-2
Ozonator Permeation Dryer ................................................................ 8-3
NO2-to-NO Converter ....................................................................... 8-3
Common Electronics .......................................................................... 8-3
Power Supply ................................................................................... 8-6
Front Panel ...................................................................................... 8-6
I/O and Communication Components ............................................ 8-6
System Controller Board .................................................................. 8-6
Backplane Board .............................................................................. 8-6
Peripherals Support System ................................................................. 8-7
Fan ................................................................................................... 8-7
STEP POL Board ............................................................................ 8-7
Sample Pump ................................................................................... 8-7
Mode Solenoid ................................................................................. 8-7
Solenoid Valve Panel ........................................................................ 8-7
Flow/Pressure DMC ........................................................................... 8-7
Firmware ............................................................................................. 8-8
Oxygen Sensor (optional) .................................................................... 8-8
Chapter 9
Optional Equipment .......................................................................................... 9-1
Connecting External Devices .............................................................. 9-1
Communication Board .................................................................... 9-2
RS-232/RS-485 Port ..................................................................... 9-2
RS-485 External Accessory Port .................................................... 9-3
42iQ Low Source Instruction Manual
vii
Contents
Analog I/O Board ............................................................................ 9-4
Analog Voltage Inputs ................................................................... 9-4
Analog Voltage Outputs ................................................................ 9-5
Analog Output Calibration .............................................................. 9-6
Analog Output Zero Calibration ................................................... 9-7
Analog Output Full Scale Calibration ........................................... 9-9
Digital I/O Board........................................................................... 9-11
Digital Inputs .............................................................................. 9-11
Digital Relay Switches ................................................................. 9-13
Valve Driver Outputs .................................................................. 9-15
Internal Zero/Span and Sample Valves .............................................. 9-17
Internal Oxygen (O2) Sensor ............................................................. 9-18
NO2-to-NO Converter ..................................................................... 9-19
PTFE Particulate Filter ..................................................................... 9-19
Ozone Particulate Filter .................................................................... 9-19
viii
Appendix A
Safety, Warranty, and WEEE .......................................................................... A-1
Safety .................................................................................................. A-1
Safety and Equipment Damage Alerts .............................................. A-1
Warranty ............................................................................................. A-2
WEEE Compliance ............................................................................. A-4
WEEE Symbol ................................................................................. A-4
Appendix B
Quick Reference ............................................................................................... B-1
List of Figures ..................................................................................... B-1
List of Tables....................................................................................... B-3
Appendix C
GNU Lesser General Public License ............................................................ C-1
GNU Lesser General Public License ................................................... C-1
42iQ Low Source Instruction Manual
Thermo Scientific
Chapter 1
Introduction
The Thermo Scientific™ 42iQ Low Source NO-NO2-NOx Analyzer utilizes
chemiluminescence technology to measure the amount of nitrogen oxides
in the air from ppb levels up to 500 ppm.
This analyzer is a single chamber, single photomultiplier tube design that
cycles between the NO and NOx modes.
The 42iQLS Analyzer has independent outputs for NO, NO2, and NOx
that can be calibrated separately. If required, the instrument can be
operated continuously in either the NO or NOx modes allowing for
response times of less than five seconds. Dual range, auto range,
temperature correction and pressure correction are standard features.
iQ Series
Instrument
Platform
Thermo Scientific
The iQ Series Instrument Platform is a smart environmental monitoring
solution for ambient and source gas analysis that affords greater control
over instrument performance and data availability.
●
Distributed Measurement and Control (DMC) module design
simplifies serviceability. Each DMC module contains its own
microprocessor control enabling functional performance validation
at the module level.
●
Built-in predictive diagnostics and preventive maintenance
schedules identify problems before they occur. The iQ Series
platform sends email notifications directly to Thermo Fisher
Scientific’s world class service support team or locally identified
addressees in order to proactively communicate analyzer
performance conditions and identify spare parts needs before an
operational concern arises.
●
The iQ Series platform supports Modbus, streaming and VNC
protocols over serial and Ethernet as well as analog and digital I/O
for easy integration into most data management systems.
●
Three standard USB ports afford convenient data download
capability as well as the ability to connect additional hardware, such
as a computer keyboard or mouse.
●
The iQ Series GUI runs on a 7” color touch screen display. The
GUI is highly flexible and can be customized to enable a tailored
42iQ Low Source Instruction Manual 1-1
Introduction
iQ Series Instrument Platform
experience to simplify daily operations. Custom designed ePort
software allows remote access to the analyzer with a PC. The ePort
control mirrors the same GUI look and feel as the instrument
touchscreen providing a speedy and familiar operational experience.
Figure 1–1. 42iQ Low Source Front
1-2
42iQ Low Source Instruction Manual
Thermo Scientific
Introduction
Principle of Operation
Principle of
Operation
The 42iQLS operates on the principle that nitric oxide (NO) and ozone
(O3) react to produce a characteristic luminescence with an intensity
linearly proportional to the NO concentration. Infrared light emission
results when NO2 molecules decay to lower energy states. Specifically:
NO + O 3 NO 2 + O 2 + h
Nitrogen dioxide (NO2) must first be transformed into NO before it can
be measured using the chemiluminescent reaction. NO2 is converted to
NO by a stainless steel NO2-to-NO converter heated to about 625 °C (the
optional molybdenum converter is heated to 325 °C).
The ambient air sample is drawn into the 42iQLS through the sample
bulkhead, as shown in Figure 1–2. The sample flows through a capillary,
and then to the mode solenoid valve. The solenoid valve routes the sample
either straight to the reaction chamber (NO mode) or through the NO2-toNO converter and then to the reaction chamber (NOx mode). The reaction
chamber pressure is measured to infer the sample flow. Pressure deviations
outside of the acceptable range are reported as a fault.
Dry air enters the 42iQLS through the permeation dryer, passes through a
flow switch, and then through a silent discharge ozonator. The ozonator
generates the ozone needed for the chemiluminescent reaction. At the
reaction chamber, the ozone reacts with the NO in the sample to produce
excited NO2 molecules. A photomultiplier tube (PMT) housed in a
thermoelectric cooler detects the luminescence generated during this
reaction. From the reaction chamber, the exhaust travels through the ozone
(O3) converter to the pump, and is released through the vent.
The NO and NOx concentrations calculated in the NO and NOx modes
are stored in memory. The difference between the concentrations is used to
calculate the NO2 concentration. The 42iQLS outputs NO, NO2, and
NOx concentrations to the front panel display and the analog outputs, and
also makes the data available over the serial or Ethernet connection.
Thermo Scientific
42iQ Low Source Instruction Manual
1-3
Introduction
Principle of Operation
Figure 1–2. 42iQLS Flow Schematic
Figure 1–3. 42iQLS Flow Schematic with Zero Span
1-4
42iQ Low Source Instruction Manual
Thermo Scientific
Introduction
Specifications
Specifications
Table 1–1 lists the specifications for the 42iQLS.
Table 1–1. 42iQ Low Source Specifications
Thermo Scientific
Range
0100 ppm
0150 mg/m3
Extended Ranges
0500 ppm
0750 mg/m3
Zero Noise
0.005 ppm RMS (60 second averaging time)
Detection Limit
0.01 ppm (60 second averaging time)
Zero Drift
≈0.005 ppm
Span Drift
±1% full-scale
Response Time (NO/NOx
mode)
15 sec (10 second averaging time)
85 sec (60 second averaging time)
305 sec (300 second averaging time)
Response Time (NO mode)
15 sec (10 second averaging time)
65 sec (60 second averaging time)
305 sec (300 second averaging time)
Linearity
±1% full-scale
Flow Rate
≈100 cc/min. measured at atmospheric pressure
Operating Temperature Range
0–40 °C
Power Requirements
100–240 VAC 50/60 Hz
275 Watts
Physical Dimensions
24 in (D) x 16.75 in (W) x 8.72 in (H) [609 mm (D) 425.45 mm
(W) x 221.48 mm (H)]
Weight
40 lbs
Analog I/O
4 Isolated Voltage Inputs 0–10 V
6 Isolated Analog Voltages Outputs, with 4 selectable
ranges
6 Isolated Analog Current Outputs, with 2 selectable ranges
Digital I/O
16 Digital Inputs (TTL)
8 Solenoid Driver Outputs
10 Digital Reed Relay Contact Outputs
Serial Ports
1 RS-232/485 port
1 RS-485 External Accessory port
Other Ports
3 Full Speed USB ports (one in front, two in rear)
1 Gigabit Ethernet port
42iQ Low Source Instruction Manual
1-5
Introduction
Specifications
Communication Protocols
MODBUS, Streaming
Approvals and Certifications
CE, TUV-SUD Safety
Table 1–2. 42iQ Low Source Optional Internal Oxygen Sensor Specifications
1-6
42iQ Low Source Instruction Manual
Technology
Paramagnetic
Range
0-100% O2
Accuracy (Intrinsic error)
<±0.1% O2
Linearity
<±0.1% O2
Repeatability
<±0.1% O2
Zero Drift
<±0.2% O2 per month (excludes up to 0.1% O2 in the first 24
hours of operation)
Response Time (T10-T90)
<2.5 seconds
Weight
Approximately 2 lbs. (in addition to standard instrument)
Thermo Scientific
Introduction
Dimensions
Dimensions
Figure 1–4. Bench Mount Assembly (dimensions in inches [mm])
Thermo Scientific
42iQ Low Source Instruction Manual
1-7
Introduction
Dimensions
Figure 1–5. Rack Mount Assembly (dimensions in inches [mm])
1-8
42iQ Low Source Instruction Manual
Thermo Scientific
Introduction
Dimensions
Figure 1–6. Rack Mount Requirements
Figure 1–7. Rack Requirements Part 2
Thermo Scientific
42iQ Low Source Instruction Manual
1-9
Chapter 2
Installation and Setup
Installation and Setup describes how to unpack, setup, and start-up the
instrument. The installation should always be followed by instrument
calibration as described in the “Calibration” chapter of this manual.
Equipment Damage Do not attempt to lift the instrument by the cover or
other external fittings. ▲
Unpacking and
Inspection
The 42iQLS is shipped complete in one container. If there is obvious
damage to the shipping container when you receive the instrument, notify
the carrier immediately and hold for inspection. The carrier is responsible
for any damage incurred during shipment.
Use the following procedure to unpack and inspect the instrument.
1. Remove the instrument from the shipping container and set it on a
table or bench that allows easy access to both the front and rear.
2. Remove the cover to expose the internal components. (See “Figure 2–
1” on page 2-2.)
3. Check for possible damage during shipment.
4. Check that all connectors and circuit boards are firmly attached.
5. Re-install the cover.
6. Remove any protective plastic material from the case exterior.
Thermo Scientific
42iQ Low Source Instruction Manual 2-1
Installation and Setup
Cover Removing and Replacing
Cover Removing
and Replacing
Use the following procedure to remove and replace the cover.
Equipment required:
Phillips screwdriver, #2
1. Unfasten the four 8-32 screws securing the cover (shipping screws).
2. Press in both latches located on top cover and hold while pulling up to
remove. Set upright.
Figure 2–1. Removing the Cover
3. To replace, align cover and drop in. Latches will automatically snap in
place.
2-2
42iQ Low Source Instruction Manual
Thermo Scientific
Installation and Setup
Mounting Options
Mounting
Options
Bench Mount
The instrument can be installed in the following configurations:
●
Bench Mount
●
Rack Mount
Positioned on bench, includes installing feet. See Figure 2–2.
Equipment required:
Slot drive, 5/16-inch
1. Fasten feet in position 1 or 2 to fit to the desired depth.
Figure 2–2. Installing Feet
Thermo Scientific
42iQ Low Source Instruction Manual
2-3
Installation and Setup
Mounting Options
Rack Mount
Mounting in a rack includes removing the front panel and installing ears
and handles.
Equipment required:
Phillips drive, #2
1. Start by gripping from the top corners of the front panel and pull
outwards.
Figure 2–3. Removing the Front Panel
2. Unfasten the four 8-32 x 3/16-inch pan head screws.
3. Slide ears outwards.
4. Use the same four 8-32 x 3/16-inch pan head screws to secure it.
5. Install the handles with the four 8-32 x 3/16-inch flat head screws.
2-4
42iQ Low Source Instruction Manual
Thermo Scientific
Installation and Setup
Mounting Options
Figure 2–4. Installing Ears and Handles
Thermo Scientific
42iQ Low Source Instruction Manual
2-5
Installation and Setup
Setup Procedure
Setup Procedure
Use the following procedure to setup the instrument:
1. Connect the sample line to the SAMPLE bulkhead on the rear panel
(Figure 2–5). Ensure that the sample line is not contaminated by dirty,
wet, or incompatible materials. All tubing should be constructed of
PTFE, 316 stainless steel, borosilicate glass, or similar tubing with an
OD of 1/4-inch and a minimum ID of 1/8-inch. The length of the
tubing should be less than 10 feet.
Note Gas must be delivered to the instrument free of particulates. It may
be necessary to use the PTFE particulate filter as described in “PTFE
Particulate Filter” on page 9-19. ▲
Note Gas must be delivered to the instrument at atmospheric pressure. It
may be necessary to use an atmospheric bypass plumbing arrangement as
shown in Figure 2–6 if gas pressure is greater than atmospheric pressure. ▲
2. Connect the EXHAUST bulkhead to a suitable vent. The exhaust line
should be 1/4-inch OD with a minimum ID of 1/8-inch. The length of
the exhaust line should be less than 10 feet. Verify that there is no
restriction in this line.
3. If the optional zero/span solenoid valves are installed, connect a source
of NOx-free air to the ZERO IN bulkhead, and connect a source of
NO span gas to the SPAN bulkhead.
4. Connect a suitable recording device to the rear panel connector. For
detailed information about connecting to the instrument, refer to:
“Connecting External Devices” on page 9-1
Communications > “Analog I/O” on page 3-107 and “Digital I/O”
on page 3-108.
5. Plug the instrument into an outlet of the appropriate voltage and
frequency.
2-6
42iQ Low Source Instruction Manual
Thermo Scientific
Installation and Setup
Setup Procedure
Icon Here
The 42iQLS is supplied with a three-wire grounding cord. Under no
circumstances should this grounding system be defeated. ▲
Figure 2–5. 42iQ Low Source Rear Panel
Figure 2–6. Atmospheric Dump Bypass Plumbing
Thermo Scientific
42iQ Low Source Instruction Manual
2-7
Installation and Setup
Startup
Startup
Use the following procedure when starting the instrument.
1. Turn the power ON.
2. Allow 90 minutes for the instrument to stabilize.
3. Set instrument parameters such as operating ranges and averaging times
to appropriate settings. For more information about instrument
parameters, see the “Operation” chapter.
4. Before beginning the actual monitoring, perform a multipoint
calibration as described in the “Calibration” chapter.
Figure 2–7. Front Panel and touch Screen Display
2-8
42iQ Low Source Instruction Manual
Thermo Scientific
Chapter 3
Operation
This chapter describes the functionality of the touchscreen user interface.
Instrument
Display
The Instrument Display consists of a Title Bar, a User Interface, and a
Status Bar. The Title Bar, located at the top, includes the Home button,
instrument name, instrument gas mode, and Help button. The User
Interface, located in the middle, is where the Home Screen and all other
screens are accessed. The Home Screen has three Main Menu buttons,
located on the left side, which include Calibration, Data, and Settings,
while the user interface to the right of the buttons displays the chemical
name(s), concentration value(s) and unit(s). The Status Bar, located at the
bottom, includes the Back button, Access Levels, Health Check, Favorites,
Date and Time, and Contact Information.
Home Screen (single range mode with O2 option)
Title Bar
User Interface
Status Bar
Thermo Scientific
42iQ Low Source Instruction Manual 3-1
Operation
Instrument Display
Home Screen (dual or auto range mode)
Title Bar
User Interface
Status Bar
3-2
42iQ Low Source Instruction Manual
Thermo Scientific
Operation
Instrument Display
The Instrument Display contains the following information:
●
●
●
Thermo Scientific
Title Bar:
●
Home button: When pressed, it brings you to the Home Screen.
●
Title Text: Displays instrument name when in the Home Screen.
Displays the chemical name, current concentration reading and
unit when in all other screens. When unit is pressed, it brings you
to the gas unit selection screen.
●
Gas Mode button: Displays current gas mode of the instrument.
When pressed, brings you to the Gas Mode selection screen.
●
Help button: When pressed, brings you to the help screens.
User Interface:
●
Calibration button: Allows the user to calibrate the instrument,
setup automatic calibrations, and view calibration data.
●
Data button: Allows the user to view, graph, stream, and analyze
data.
●
Settings button: Shows real-time status and alarms, also predictive
diagnostics and maintenance history. Contains controls for
operating the instrument, communications, and sets instrument
options.
●
Concentration: When in single mode, displays NO, NO2, and NOx
concentrations in big, bold characters, depending on operating
mode. When in dual or auto mode, displays either high range or
low range values based on the range setting.
Status Bar:
●
Back button: When pressed, it displays the previous screen.
●
Access Levels button: Allows the user to set security access levels, and
allows/restricts access to functionality depending on the selected
access level.
●
Health Check button: Brings the user to the Health Check screen.
●
Favorites button: Allows user-selectable favorite buttons. To add to
the favorites screen, user presses the desired screen button for 2
seconds. The user will be directed to the favorites screen where the
user chooses the button position. To remove a favorite button from
the favorites screen, press and hold button for 2 seconds.
●
Clock: Displays current date and time.
42iQ Low Source Instruction Manual
3-3
Operation
Instrument Display
●
3-4
42iQ Low Source Instruction Manual
Thermo Scientific Information button: Shows contact information.
Thermo Scientific
Operation
Instrument Display
Main Menus and
Keypads
The Main Menu buttons, located on the Home Screen, contains three
submenus. Each submenu contains related instrument settings. This
chapter describes each submenu and screen in detail. Refer to the
appropriate sections for more information.
Calibration
Calibrate Backgrounds
Calibrate NO Background
Calibrate NOx Background
Calibrate Span Coefficients
Calibrate NO Span Coefficient
Calibrate NO2 Span
Coefficient
Calibrate NOx Span
Coefficient
Zero/Span Schedule
Data
View Data Log (Last Hour)
Graph
View Data Log (Last 24 Hours)
Graph
View Data (User Defined Time)
Start Time
End Time – View Data
Graph
Advanced Data
Data Logging Setup
Streaming Data Setup
Calibrate O2 Span Coefficient
(Optional)
Advanced Calibration
Manual Calibration
Adjust Backgrounds
Adjust NO
Background
Adjust NOx
Background
Adjust Coefficients
Adjust NO Span
Coefficient
Adjust NO2 Span
Coefficient
Adjust NOx Span
Coefficient
Reset Bkg and Span Coef
Manual O2 Calibration
(Optional)
2‐Point O2 Calibration
(Optional)
Calibration History
Settings
Health Check
Status and Alarms
Predictive Diagnostics
Maintenance
File Sharing and Support
Firmware Version
Measurement Settings
Averaging Time
Range Mode Selection
Range Settings
Gas Mode
Gas Units
Dilution Ratio
Advanced Measurement
Reaction Chamber
Settings
Auto/Manual Mode
Extended Ranges
Compensation
Pressure Calibration
Communication Settings
Instrument Settings
Title Bar Setup
Instrument Setpoints
Alarm Setpoints
Ozonator Safety
PMT Supply
Ozonator Supply
Display Setup
Clock
Language
Pump Power
Configuration
Security Access Levels
User Contact Information
USB Drive
Firmware Update Via USB
Drive
Download Data to USB Drive
Change USB Password
Update Bootloader
Thermo Scientific
42iQ Low Source Instruction Manual
3-5
Operation
Instrument Display
Numeric Keypad
3-6
42iQ Low Source Instruction Manual
User enters a value into the box using the number keypad. When the user
needs to change a value, such as for flow rates, temperatures or pressures,
the keypad screen will automatically display. Initially, the box above the
keypad will display the current value. Enter a new value using the keypad,
and then select the Enter button to set the new value or press the Cancel
button to exit the keypad screen and return to the previous screen without
saving the value.
Thermo Scientific
Operation
Instrument Display
Alphanumeric Keypad
Thermo Scientific
User enters a value into the box using the keypad. When the user needs to
change an alphanumeric value, this keypad will automatically display.
Initially, the box above the keypad will display the current value. Enter a
new value using the keypad, and then select the Enter button to set the
new value or press the Cancel button to exit the keypad screen and return
to the previous screen without saving the value. The alphanumeric keypad
is only available when the user needs to enter alphabet characters.
42iQ Low Source Instruction Manual
3-7
Operation
Instrument Display
3-8
42iQ Low Source Instruction Manual
Thermo Scientific
Operation
Calibration
Calibration
The Calibration screen allows the user to calibrate the system, setup
automatic calibrations, and view calibration data. See Chapter 4
“Calibration” for further instructions on how to run a calibration.
Home Screen>Calibration (with O2 option)
The Calibration screen contains the following information:
Thermo Scientific
●
Calibrate Backgrounds: Sets the NO and NOx reading to zero.
●
Calibrate Span Coefficients: Sets the NO, NO2, and NOx span
coefficients when in single mode.
●
Zero/Span Schedule: Programs the instrument to perform fully
automated zero and span checks or adjustments.
●
Calibrate O2 Span Coefficient: When the O2 Sensor option is turned on
(in the Settings>Configuration screen), this button will appear. It
allows an O2 calibration to be performed.
●
Advanced Calibration: Calibrates the instrument using manual
zero/span calibration and provides calibration history.
42iQ Low Source Instruction Manual
3-9
Operation
Calibration
Calibrate
Backgrounds
The Calibrate Backgrounds screen is used to calibrate the instrument zero
background of NO and NOx.
Home Screen>Calibration>Calibrate Backgrounds
The Calibrate Backgrounds screen contains the following information:
3-10
42iQ Low Source Instruction Manual
●
Calibrate NO Background: Sets the NO background to zero.
●
Calibrate NOx Background: Sets the NOx background to zero.
Thermo Scientific
Operation
Calibration
Calibrate NO and NOx
Background
The Calibrate NO and NOx Background screens are used to calibrate the
instrument zero background. Before making an adjustment, be sure the
analyzer samples zero air for at least 5 minutes.
It is important to note the averaging time when calibrating. The longer the
averaging time the more precise the calibration results. To achieve
maximum precision, allow the instrument to stabilize each time input gas is
changed and set the averaging time to 300-second averaging.
Home Screen>Calibration>Calibrate NO Background
Home Screen>Calibration>Calibrate NOx Background
The Calibrate Background screen contains the following information:
Thermo Scientific
●
Target NO Concentration: Read only. Displays what the NO
concentration value will become when the calibrate button is pressed.
●
Current NO Concentration: Read only. Displays what the current NO
concentration is.
●
Current NO Background: Read only. Displays what the current user-set
NO background is.
42iQ Low Source Instruction Manual
3-11
Operation
Calibration
3-12
42iQ Low Source Instruction Manual
●
Calculated NO Background: Read only. Displays what the current userset NO background will become when the calibrate button is pressed.
●
Calibrate: When pressed, updates the background value, making the
concentration go to 0.
●
Target NOx Concentration: Read only. Displays what the NOx
concentration value will become when the calibrate button is pressed.
●
Current NOx Concentration: Read only. Displays what the current NOx
concentration is.
●
Current NOx Background: Read only. Displays what the current user-set
NOx background is.
●
Calculated NOx Background: Read only. Displays what the current userset NOx background will become when the calibrate button is pressed.
●
Calibrate: When pressed, updates the background value, making the
concentration go to zero.
Thermo Scientific
Operation
Calibration
Calibrate Span
Coefficients
The Calibrate Span Coefficients screens are used to calibrate the NO, NO2,
and NOx span coefficients.
The following screens show the calibration screen in single range mode and
dual or auto range mode. The dual and auto range modes have two span
factors (high and low). This allows each range to be calibrated separately.
When calibrating the instrument in dual or auto range, be sure to use a low
span gas to calibrate the low range and a high span gas to calibrate the high
range. For more information about range modes, see “Range Mode
Selection” on page 3-87.
It is important to note the averaging time when calibrating. The longer the
averaging time the more precise the calibration results. To achieve
maximum precision, allow the instrument to stabilize each time input gas is
changed and set the averaging time to 300-second averaging.
Home Screen>Calibration>Calibrate Span Coefficients (single range
mode)
Home Screen>Calibration>Calibrate Span Coefficients (dual or auto
range mode)
Thermo Scientific
42iQ Low Source Instruction Manual
3-13
Operation
Calibration
The Calibrate Coefficients screen contains the following information:
3-14
42iQ Low Source Instruction Manual
●
Calibrate NO Span Coefficient: Sets the NO span coefficient when in
single range mode.
●
Calibrate High Range NO Span Coefficient: Sets the high range NO
span coefficient when in dual or auto range mode.
●
Calibrate Low Range NO Span Coefficient: Sets the low range NO span
coefficient when in dual or auto range mode.
●
Calibrate NO2 Span Coefficient: Sets the NO2 span coefficient when in
single range mode.
●
Calibrate High Range NO2 Span Coefficient: Sets the high range NO2
span coefficient when in dual or auto range mode.
●
Calibrate Low Range NO2 Span Coefficient: Sets the low range NO2
span coefficient when in dual or auto range mode.
●
Calibrate NOx Span Coefficient: Sets the NOx span coefficient when in
single range mode.
●
Calibrate High Range NOx Span Coefficient: Sets the high range NOx
span coefficient when in dual or auto range mode.
●
Calibrate Low Range NOx Span Coefficient: Sets the low range NOx span
coefficient when in dual or auto range mode.
Thermo Scientific
Operation
Calibration
Calibrate NO, NO2, and
NOx Span Coefficient
The Calibrate NO, NO2, and NOx Span Coefficient screens are used to
enter span concentrations and calibrate the NO, NO2, and NOx
coefficients. The NO span coefficient is calculated, stored, and used to
correct the current reading. All calibration screens function the same way.
Therefore, the following example of the NO screen applies to the NO2 and
NOx calibration screens as well.
The following screens are shown in single range mode and dual or auto
range mode. In dual or auto range modes, “High” or “Low” is displayed to
indicate the calibration of the high or low coefficient. The Calibrate High
Span Coefficient and Calibrate Low Span Coefficient screens function the
same way.
It is important to note the averaging time when calibrating. The longer the
averaging time the more precise the calibration results. To achieve
maximum precision, allow the instrument to stabilize each time input gas is
changed and set the averaging time to 300-second averaging.
Home Screen>Calibration>Calibrate Span Coefficient (single range
mode)
Thermo Scientific
42iQ Low Source Instruction Manual
3-15
Operation
Calibration
Home Screen>Calibration>Calibrate High Range Coefficient (dual or
auto range mode)
The Calibrate NO, NO2, and NOx Span Coefficient screens contain the
following information:
3-16
42iQ Low Source Instruction Manual
●
Edit NO Span Concentration: User enters the NO span concentration
when in single range mode.
●
Edit Span Concentration: User enters the high range or low range span
concentration when in dual or auto range mode.
●
Current NO Concentration: Read only. Current NO concentration
reading when in single range mode.
●
Current High Range NO Concentration: Read only. Current high range
NO concentration reading when in dual or auto range mode.
●
Current Low Range NO Concentration: Read only. Current low range
NO concentration reading when in dual or auto range mode.
●
Current NO Span Coefficient: Read only. Displays the current user-set
NO span coefficient when in single range mode.
●
Current High Range NO Coefficient: Read only. Displays the current
user-set high range NO span coefficient when in dual or auto range
mode.
●
Current Low Range NO Coefficient: Read only. Displays the current
user-set low range NO span coefficient when in dual or auto range
mode.
●
Calculated NO Span Coefficient: Read only. After the “Edit NO Span
Concentration” value is entered, the new calculated NO span
coefficient is displayed.
●
Calculated High Range NO Span Coefficient: Read only. After the “Edit
Span Concentration” value is entered, the new calculated high range
NO span coefficient is displayed.
Thermo Scientific
Operation
Calibration
Thermo Scientific
●
Calculated Low Range NO Span Coefficient: Read only. After the “Edit
Span Concentration” value is entered, the new calculated low range
NO span coefficient is displayed.
●
Calibrate: When pressed, updates the coefficient and the concentration
should match the span concentration.
42iQ Low Source Instruction Manual
3-17
Operation
Calibration
Zero/Span Schedule
The Zero/Span Schedule is used to program the instrument to perform
fully automated zero and span checks or adjustments.
Home Screen>Calibration>Zero/Span Schedule
Home Screen>Calibration>Zero/Span Schedule>More
The Zero/Span Schedule contains the following information:
3-18
42iQ Low Source Instruction Manual
●
Zero/Span Schedule: Toggles zero/span schedule Enabled or Disabled.
●
Next Time: Allows the user to view and set the initial date and time
(24-hour format) of the zero/span schedule.
●
Period: Defines the period or interval between zero/span checks or
calibrations. If period = 0, the schedule runs continuously.
●
Zero Duration: Sets how long zero air is sampled by the instrument.
●
Span Duration: Sets how long span gas is sampled by the instrument.
●
Purge Duration: Sets how long the purge period will be at the end of
the schedule.
Thermo Scientific
Operation
Calibration
Thermo Scientific
●
Total Duration: Read only. Displays the total time duration of all
scheduled events.
●
Schedule Averaging Time: Allows the user to adjust the zero/span
schedule averaging time. This averaging time only affects the zero/span
schedule.
●
Background Calibration: Toggles Enabled/Disabled. If enabled,
background value is calibrated. If disabled, schedule runs a background
check only and background value is not updated.
●
Span Calibration: Toggles Enabled/Disabled. If enabled, span
coefficient is calibrated. If disabled, schedule runs a calibration check
only and span coefficient is not updated.
●
Zero : Span Ratio: Allows the user to perform more scheduled
background calibration checks to span calibration checks. Default is 1
and therefore reads 1:1. (This means that each time the schedule is run,
both the zero duration and span duration occurs.) The zero/span ratio
is allowable between 1 to 99. If 99 is chosen, the schedule should only
perform the Span on the 99th iteration.
42iQ Low Source Instruction Manual
3-19
Operation
Calibration
Calibrate O2 Span
Coefficient
The Calibrate O2 Span Coefficient screen is used to enter the O2 span
concentration and calibrate the O2 span coefficient while sampling span gas
of known concentration. This button appears if the O2 Sensor option is
selected in the configuration screen.
It is important to note the O2 averaging time when calibrating. The longer
the averaging time the more precise the calibration results. To achieve
maximum precision, allow the instrument to stabilize each time input gas is
changed and set the averaging time to 300-second averaging. The O2
Averaging Time is located at Settings>Measurement Settings>Averaging
Time.
Home Screen>Calibration>Calibrate O2 Span Coefficient (single range
mode)
The Calibrate O2 Span Coefficients screen contains the following
information:
3-20
42iQ Low Source Instruction Manual
●
Edit O2 Span Concentration: User enters the O2 span concentration.
●
Current O2 Concentration: Read only. Current O2 concentration
reading.
●
Current O2 Span Coefficient: Read only. Current O2 span coefficient
value.
●
Calculated O2 Span Coefficient: Read only. After the “Edit O2 Span
Concentration” value is entered, the new calculated O2 span coefficient
is displayed.
●
Calibrate: When pressed, updates the O2 coefficient and the O2
concentration should match the span concentration.
Thermo Scientific
Operation
Calibration
Advanced
Calibration
The Advanced Calibration screen provides a manual way to calibrate the
instrument and view the calibration history. See Chapter 4 “Calibration”
for further instructions on how to run a calibration.
Home Screen>Calibration>Advanced Calibration
The Advanced screen contains the following information:
Thermo Scientific
●
Manual Calibration: The user manually adjusts the background or span
coefficient.
●
Manual O2 Calibration: The user manually adjusts the O2 span
coefficient based on the current O2 concentration value.
●
2-Point O2 Calibration: The user manually performs a 2-point
calibration of the O2 sensor.
●
Calibration History: Lists all calibrations performed and calibration
checks.
42iQ Low Source Instruction Manual
3-21
Operation
Calibration
Manual Calibration
The Manual Calibration screen adjusts the zero background or span
coefficient based on a user entered value. See Chapter 4, “Calibration” for
instructions on how to run a Manual Calibration.
Home Screen>Calibration>Advanced Calibration>Manual Calibration
The Manual Calibration screen contains the following information:
3-22
42iQ Low Source Instruction Manual
●
Adjust Backgrounds: Allows the user to manually adjust the zero
backgrounds.
●
Adjust Span Coefficients: Allows the user to manually adjust the span
coefficients.
●
Reset Bkgs to 0.000 and Span Coef to 1.000: Resets all backgrounds and
coefficients.
Thermo Scientific
Operation
Calibration
Adjust Backgrounds
The Adjust Background screens are used to manually adjust the NO and
NOx zero background.
Home Screen>Calibration>Advanced Calibration>Manual
Calibration>Adjust Backgrounds
The Adjust Backgrounds screen contains the following information:
Thermo Scientific
●
Adjust NO Background: User manually adjusts zero NO background.
●
Adjust NOx Background: User manually adjusts zero NOx background.
42iQ Low Source Instruction Manual
3-23
Operation
Calibration
Adjust NO and NOx
Background
The Adjust NO and NOx Background screens are used to adjust the
instrument zero background. Before making an adjustment, be sure the
analyzer samples zero air for at least 5 minutes.
It is important to note the averaging time when calibrating. The longer the
averaging time the more precise the calibration results. To achieve
maximum precision, allow the instrument to stabilize each time input gas is
changed and set the averaging time to 300-second averaging.
Home Screen>Calibration> Advanced Calibration>Manual
Calibration>Adjust Backgrounds>Adjust NO Background
Home Screen>Calibration>Advanced Calibration>Manual
Calibration>Adjust Backgrounds>Adjust NOx Background
The Adjust NO and NOx Background screens contain the following
information:
3-24
42iQ Low Source Instruction Manual
●
Adjust NO Background: User manually adjusts zero NO background.
●
Adjusted NO Concentration: Read only. Displays what the NO
concentration value will become when the calibrate button is pressed.
Thermo Scientific
Operation
Calibration
Thermo Scientific
●
Current NO Concentration: Read only. Displays the current NO
concentration.
●
Adjust NOx Background: User manually adjusts zero NOx background.
●
Adjusted NOx Concentration: Read only. Displays what the NOx
concentration value will become when the calibrate button is pressed.
●
Current NOx Concentration: Read only. Displays the current NOx
concentration.
●
Calibrate: When pressed, updates the background.
42iQ Low Source Instruction Manual
3-25
Operation
Calibration
Adjust Span Coefficients
The Adjust Span Coefficients screen is used to manually adjust the span
coefficients.
The following screens show the manual calibration screens in single range
mode and dual or auto range mode. In dual or auto range modes, “High
Range” or “Low Range” buttons are displayed to indicate the calibration of
the high or low coefficient. The Adjust High Span Coefficient and Adjust
Low Span Coefficient screens function the same way as the (single range)
Adjust Span Coefficient screen.
Home Screen>Calibration>Advanced Calibration>Manual
Calibration>Adjust Span Coefficients (single range mode)
Home Screen>Calibration>Advanced Calibration>Manual
Calibration>Adjust Span Coefficients (dual or auto range mode)
The Adjust Span Coefficients screen contains the following information:
3-26
42iQ Low Source Instruction Manual
●
Calibrate NO Coefficient: Adjusts the NO coefficient when in single
range mode.
●
Calibrate NO High Range Coefficient: Adjusts the NO high range
coefficient when in dual or auto range mode.
Thermo Scientific
Operation
Calibration
Thermo Scientific
●
Calibrate NO Low Range Coefficient: Adjusts the NO low range
coefficient when in dual or auto range mode.
●
Calibrate NO2 Coefficient: Adjusts the NO2 coefficient when in single
range mode.
●
Calibrate NO2 High Range Coefficient: Adjusts the NO2 high range
coefficient when in dual or auto range mode.
●
Calibrate NO2 Low Range Coefficient: Adjusts the NO2 low range
coefficient when in dual or auto range mode.
●
Calibrate NOx Coefficient: Adjusts the NOx coefficient when in single
range mode.
●
Calibrate NOx High Range Coefficient: Adjusts the NOx high range
coefficient when in dual or auto range mode.
●
Calibrate NOx Low Range Coefficient: Adjusts the NOx low range
coefficient when in dual or auto range mode.
42iQ Low Source Instruction Manual
3-27
Operation
Calibration
Adjust NO, NO2, and NOx
Span Coefficients
The Adjust NO, NO2, and NOx Span Coefficient screens are used to
manually adjust the coefficient and enter the span concentration. The NO
span coefficient is calculated, stored, and used to correct the current
reading. All calibration screens function the same way. Therefore, the
following example of the NO screen applies to the NO2 and NOx
calibration screens as well.
The following screen is shown in single range mode and dual or auto range
mode. In dual or auto range modes, “High Range” or “Low Range” is
displayed to indicate the calibration of the high or low coefficient. The
Adjust High Range NO Span Coefficient and Adjust Low Range NO Span
Coefficient screens function the same way.
It is important to note the averaging time when calibrating. The longer the
averaging time the more precise the calibration results. To achieve
maximum precision, allow the instrument to stabilize each time input gas is
changed and set the averaging time to 300-second averaging.
Home Screen>Calibration>Advanced Calibration>Manual
Calibration>Adjust Span Coefficients>Adjust NO Span Coefficient
(single range mode)
3-28
42iQ Low Source Instruction Manual
Thermo Scientific
Operation
Calibration
Home Screen> Calibration>Advanced Calibration>Manual
Calibration>Adjust Coefficients> Adjust High Range NO Span
Coefficient (dual or auto range mode)
The Adjust NO Span Coefficient screens contain the following
information:
Thermo Scientific
●
Adjust NO Span Coefficient: User manually adjusts NO span coefficient
when in single range mode.
●
Adjusted NO Concentration: Read only. Shows adjusted NO
concentration based on adjusted NO span coefficient when in single
range mode.
●
Current NO Concentration: Read only. Shows current NO
concentration when in single range mode.
●
Adjust High Range NO Span Coefficient: User manually adjusts the high
range NO span coefficient when in dual or auto range mode.
●
Adjusted High Range NO Concentration: Read only. Shows adjusted
high range NO concentration based on adjusted high range NO span
coefficient when in dual or auto range mode.
●
Current High Range NO Concentration: Read only. Shows current high
range NO concentration when in dual or auto range mode.
●
Adjust Low Range NO Span Coefficient: User manually adjusts the NO
low span coefficient when in dual or auto range mode.
●
Adjusted Low Range NO Concentration: Read only. Shows adjusted NO
concentration based on adjusted low range NO span coefficient when
in dual or auto range mode.
●
Adjusted Low Range NO Concentration: Read only. Shows current low
range NO concentration when in dual or auto range mode.
●
Calibrate: Calibrates span coefficient by saving the newly adjusted span
coefficient.
42iQ Low Source Instruction Manual
3-29
Operation
Calibration
Manual O2 Calibration
The Manual O2 Calibration screen allows the O2 span coefficients to be
changed manually while sampling span gas of known concentration. This
button appears if the O2 Sensor option is selected in the Configuration
screen.
Home Screen>Calibration>Advanced Calibration>Manual Calibration
(single range mode)
The Manual O2 Calibration screen contains the following information:
3-30
42iQ Low Source Instruction Manual
●
Adjust O2 Span Coefficient: Allows the user to manually adjust the O2
span coefficient.
●
Reset O2 Coefficient to 1.000: Resets coefficient.
Thermo Scientific
Operation
Calibration
Adjust O2 Span
Coefficient
The Adjust O2 Span Coefficient screen is used to manually adjust the O2
span coefficient.
Home Screen>Calibration>Advanced>Manual Calibration>Adjust O2
Span Coefficient
The Adjust O2 Span Coefficient menu contains the following information:
Thermo Scientific
●
Adjust O2 Span Coefficient: User manually adjusts span coefficient.
●
Adjusted Concentration: Read only. Shows adjusted O2 concentration
based on adjusted O2 span coefficient.
●
Calibrate: Calibrates span coefficient by saving the newly adjusted O2
span coefficient.
42iQ Low Source Instruction Manual
3-31
Operation
Calibration
2-Point O2 Calibration
The 2-Point O2 Calibration screen is used to calibrate the O2 sensor using
2 different gas concentrations. Both points need to be calibrated for a
successful calibration. It is suggested that the two O2 concentrations used
for this calibration be 0% and 20.9%. This button appears if the O2 Sensor
option is selected in the Configuration screen.
Home Screen>Calibration>Advanced Calibration>2-Point O2
Calibration>
Home Screen>Calibration>Advanced Calibration>2-Point O2
Calibration>Continue to 2-Point O2 Calibration
The 2-Point O2 Calibration screen contains the following information:
3-32
42iQ Low Source Instruction Manual
●
2-Point O2 Calibration Point 1: First cal point used in the 2 point O2
calibration. Defaults to 0.000%.
●
2-Point O2 Calibration Point 2: Second cal point used in the 2 point O2
calibration. Defaults to 20.900%.
Thermo Scientific
Operation
Calibration
Point 12
The Point 1 screen allows the user to view and set the selected calibration
point. The point 2 screen functions the same way. Therefore, the following
example of point 1 screen applies to point 2 as well.
Home Screen>Calibration>Advanced Calibration>2-Point O2
Calibration>Continue to 2-Point O2 Calibration>Point 1
The Point 1 screen contains the following information:
Thermo Scientific
●
Edit O2 Span Concentration: User enters O2 span concentration.
●
Current O2 Concentration: Read only. After selecting the value on the
Edit O2 Concentration button and after pressing the Calibrate O2
button, the Point 1 Concentration value is updated.
●
Calibrate O2: Calibrates point 1 coefficient.
42iQ Low Source Instruction Manual
3-33
Operation
Calibration
Calibration History
The Calibration History screen shows the log of calibrations and
calibration checks performed.
Use the and buttons to move up and down and the and
buttons to move left and right.
Home Screen>Calibration>Advanced Calibration>Calibration History
Note Pressing the Calibration History button responds with Retrieving
calibration log data, it may take a few seconds... ▲
The Calibration History screen contains the following information:
3-34
42iQ Low Source Instruction Manual
●
Time Stamp: Time of calibration or calibration check.
●
Event: Lists the type of calibration event.
●
Result: Concentration result.
●
Target: Concentration setpoint value.
●
Units: Displays units for each item.
●
Average Time: Averaging time used during the calibration or calibration
check.
Thermo Scientific
Operation
Data
Data
The Data screen is used to view and record concentrations and instrument
data. Users can view both tabular data and graphed data.
Home Screen>Data
The Data screen contains the following information:
Thermo Scientific
●
View Data Log (Last Hour): User views last hour of historical data.
Table shows most recent data on top.
●
View Data Log (Last 24 Hours): User views 24-hour of historical data.
Table shows most recent data on top.
●
View Data Log (User Defined Time): User selects the start and end time
for viewing the data. Table shows most recent data on top.
●
Advanced Data Setup: Allows the user to set up the parameters of how
the data is stored.
42iQ Low Source Instruction Manual
3-35
Operation
Data
View Data Log (Last
Hour)
The View Data Log (Last Hour) screen allows the user to instantly view the
last hour worth of data in real time.
Use the and buttons to move up and down and the and
buttons to move left and right.
Home Screen>Data>View Data Log (Last Hour)
Note Pressing the View Data Log ((Last Hour) responds with Retrieving
user log data, it may take a few seconds... ▲
The View Data Log (Last Hour) screen contains the following options:
●
3-36
42iQ Low Source Instruction Manual
Graph: Displays data graph for the column selected. The graph time
axis is defined by the data set in the table.
Thermo Scientific
Operation
Data
View Data Log (Last
24 Hours)
The View Data Log (Last 24 Hours) screen allows the user to instantly
view the last 24 hours worth of data in real time.
Use the and buttons to move up and down and the and
buttons to move left and right.
Home Screen>Data>View Data Log (Last 24 Hours)
Note Pressing the View Data Log ((Last 24 Hours) responds with
Retrieving user log data, it may take a few seconds... ▲
The View Data Log (Last 24 Hours) screen contains the following options:
●
Thermo Scientific
Graph: Displays data graph for the column selected. The graph time
axis is defined by the data set in the table.
42iQ Low Source Instruction Manual
3-37
Operation
Data
View Data Log (User
Defined Time)
The View Data (User Defined Time) screen is used to specify the start and
end time for viewing the data logging table.
Home Screen>Data>View Data Log (User Defined Time)
Home Screen>Data>View Data Log (User Defined Time)>Save Data
Logging Start Time
The View Data Log (User Defined Time) screen contains the following
information:
3-38
42iQ Low Source Instruction Manual
●
Month: Sets month of data logging start time.
●
Day: Sets day of data logging start time.
●
Year: Sets year of data logging start time.
●
Hours: Sets hours of data logging start time.
●
Minutes: Sets minutes of data logging start time.
●
Save Data Logging Start Time: Pressing this button saves the start time
and follows directly to the end time selection for the data logging
screen.
Thermo Scientific
Operation
Data
The View Data Log (User Defined Time) End Time screen contains the
following information:
●
Month: Sets month of data logging end time.
●
Day: Sets day of data logging end time.
●
Year: Sets year of data logging end time.
●
Hours: Sets hour of data logging end time.
●
Minutes: Sets minute of data logging end time.
●
Save Data Logging End Time: Pressing the Save Data Logging End
Time button saves the end time and follows directly to the data logging
table.
Note End time should not be greater than 1 year from start time . ▲
Thermo Scientific
42iQ Low Source Instruction Manual
3-39
Operation
Data
Advanced Data
Setup
The Advanced Data Setup screen allows the user to select variables and set
up parameters for data logging and streaming data.
Home Screen>Data>Advanced Data Setup
The Advanced Data Setup screen contains the following information:
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42iQ Low Source Instruction Manual
●
Data Logging Setup: User selects the parameters for collecting logged
data.
●
Streaming Data Setup: User selects the parameters for streaming data to
a computer in real time.
Thermo Scientific
Operation
Data
Data Logging Setup
The Data Logging Setup screen allows the user to select data to be stored
and how it is stored.
Home Screen>Data>Advanced>Data Logging Setup
The Data Logging Setup screen contains the following information:
Thermo Scientific
●
Select Data Logging Variables: User selects instrument variables to log.
See “Table 3–1” for data logging variables list.
●
Period: User selects how often data is collected by setting the duration
between logged data.
●
Data Treatment: Toggles between Average, Current, Minimum and
Maximum. When set to average, the average value during the period
will be recorded. When set to current, the latest data will be recorded.
When set to minimum or maximum, the minimum or maximum value
during the period will be recorded.
●
Erase Data Log Records: Allows the user to erase all values in the data log
and updates the data logging table.
42iQ Low Source Instruction Manual
3-41
Operation
Data
Select Data Logging
Variables
The Select Data Logging Variables screen allows the user to select which
variables to store. Note: The Data logging and Streaming variable lists are
exclusive from each other but contain the same variable selections.
Use the and buttons to scroll through the variables. Select the
variables to log by pressing the corresponding cells. Next, press the
Commit Changes button to save selections. Yellow buttons indicate that
the variable is selected.
Home Screen>Data>Advanced>Data Logging Setup>Select Data
Logging Variables
The following table contains the variables that can be selected for data
logging:
Table 3–1. Data Logging Variables
Description
NO Concentration (ppb or μg/m3)
NO2 Concentration (ppb or μg/m3)
NOx Concentration (ppb or μg/m3)
NO Corrected Concentration (ppb or μg/m3)
NO2 Corrected Concentration (ppb or μg/m3)
NOx Corrected Concentration (ppb or μg/m3)
NO High Concentration (ppb or μg/m3)
NO2 High Concentration (ppb or μg/m3)
NOx High Concentration (ppb or μg/m3)
NO High Corrected Concentration (ppb or μg/m3)
NO2 High Corrected Concentration (ppb or μg/m3)
NOx High Corrected Concentration (ppb or μg/m3)
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42iQ Low Source Instruction Manual
Thermo Scientific
Operation
Data
Gas Mode
Instrument Temperature (degC)
PMT Voltage (Volts)
Flow (L/Min)
Chamber Pressure (mmHg)
Ambient Pressure (mmHg)
NO Concentration Alarm
NO2 Concentration Alarm
NOx Concentration Alarm
Pressure Alarm
Flow Alarm
Temperature Alarm
Auto Zero Alarm
Auto Span Alarm
Flow Pressure Module Alarms
Concentration Alarms
NO Background (ppb or μg/m3)
NOx Background (ppb or μg/m3)
NO Coefficient
NO2 Coefficient
NOx Coefficient
NO High Coefficient
NO2 High Coefficient
NOx High Coefficient
General Alarm
Alerts
Instrument Error
Low Dynamic Filter Status
High Dynamic Filter Status
Dilution Ratio
PMT42 Alarms
Cooler Temp Alarm
Chamber Temperature Alarm
PMT42 cooler current (Amps)
Thermo Scientific
42iQ Low Source Instruction Manual
3-43
Operation
Data
PMT42 Bench Temperature (degC)
PMT42 Cooler Temperature (degC)
PMT High Voltage (Volts
Cooler Voltage (Volts)
Converter Temperature Alarm
NO2 Converter Alarms
Converter Temperature (degC)
Heater Duty Cycle (Percent)
Ozonator Alarms
External Alarm 1
External Alarm 2
External Alarm 3
Analog Input 1
Analog Input 2
Analog Input 3
Analog Input 4
Analog Alarms
PSB Alarms
O2 Alarms
O2 %
O2 Conc Alarm
O2 Averaging Time (sec)
O2 Temperature
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42iQ Low Source Instruction Manual
Thermo Scientific
Operation
Data
Streaming Data Setup
The Streaming Data Setup screen allows the user to stream data to a
computer.
Home Screen>Data>Advanced>Streaming Data Setup
The Streaming Data Setup screen contains the following information:
Thermo Scientific
●
Select Streaming Variables: User selects which variables to stream. See
Table 3–2 for streaming variables list.
●
Period: Sets the time between streamed data.
●
Show Labels: Toggles on/off. When on, shows variable labels to the left
of the variable values.
●
Show Timestamp: Toggles on/off. When on, shows timestamp at the
beginning of each row of data.
42iQ Low Source Instruction Manual
3-45
Operation
Data
Select Streaming
Variables
The Select Streaming Variables screen allows the user to select which
variables to track. Note: The Data logging and Streaming variable lists are
exclusive from each other but contain the same variable selections.
Use the and buttons to scroll through the variables. Select the
variables to log by pressing the corresponding cells. Next, press the
Commit Changes button to save selections. Yellow buttons indicate that
the variable is selected.
Home Screen>Data>Advanced>Streaming Data Setup>Select
Streaming Variables
The following table contains the variables that can be selected for streaming
data:
Table 3–2. Streaming Data Variables
Description
NO Concentration (ppb or μg/m3)
NO2 Concentration (ppb or μg/m3)
NOx Concentration (ppb or μg/m3)
NO Corrected Concentration (ppb or μg/m3)
NO2 Corrected Concentration (ppb or μg/m3)
NOx Corrected Concentration (ppb or μg/m3)
NO High Concentration (ppb or μg/m3)
NO2 High Concentration (ppb or μg/m3)
NOx High Concentration (ppb or μg/m3)
NO High Corrected Concentration (ppb or μg/m3)
NO2 High Corrected Concentration (ppb or μg/m3)
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42iQ Low Source Instruction Manual
Thermo Scientific
Operation
Data
NOx High Corrected Concentration (ppb or μg/m3)
Gas Mode
Instrument Temperature (degC)
PMT Voltage (Volts)
Flow (L/Min)
Chamber Pressure (mmHg)
Ambient Pressure (mmHg)
NO Concentration Alarm
NO2 Concentration Alarm
NOx Concentration Alarm
Pressure Alarm
Flow Alarm
Temperature Alarm
Auto Zero Alarm
Auto Span Alarm
Flow Pressure Module Alarms
Concentration Alarms
NO Background (ppb or μg/m3)
NOx Background (ppb or μg/m3)
NO Coefficient
NO2 Coefficient
NOx Coefficient
NO High Coefficient
NO2 High Coefficient
NOx High Coefficient
General Alarm
Alerts
Instrument Error
Low Dynamic Filter Status
High Dynamic Filter Status
Dilution Ratio
PMT42 Alarms
Cooler Temp Alarm
Chamber Temperature Alarm
Thermo Scientific
42iQ Low Source Instruction Manual
3-47
Operation
Data
PMT42 cooler current (Amps)
PMT42 Bench Temperature (degC)
PMT42 Cooler Temperature (degC)
PMT High Voltage (Volts
Cooler Voltage (Volts)
Converter Temperature Alarm
NO2 Converter Alarms
Converter Temperature (degC)
Heater Duty Cycle (Percent)
Ozonator Alarms
External Alarm 1
External Alarm 2
External Alarm 3
Analog Input 1
Analog Input 2
Analog Input 3
Analog Input 4
Analog Alarms
PSB Alarms
O2 Alarms
O2 %
O2 Conc Alarm
O2 Averaging Time (sec)
O2 Temperature
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42iQ Low Source Instruction Manual
Thermo Scientific
Operation
Settings
Settings
The Settings screen allows the user to view the status and alarms, set up
user preferences, communicate with outside devices and computers,
download files to USB, and sets security protocol.
Home Screen>Settings
The Settings screen contains the following information:
Thermo Scientific
●
Health Check: View instrument status and alarms, predictive
diagnostics, preventive maintenance alerts, maintenance history, email
health check report files, and contact Thermo Fisher Scientific
technical support.
●
Measurement Settings: Allows the user to setup user preferences as
related to the concentration readings.
●
Communications: Allows the user to communicate with outside devices.
●
Instrument Setting: Allows the user to setup alarm setpoints and user
preferences.
●
Configuration: User selects which options to enable.
●
Security Access Levels: User selects security protocol. User can also
change security passwords.
●
USB Drive: User can update instrument firmware, download data, and
change USB password.
●
User Contact Information: User sets up their contact information.
●
Update Bootloader: Used to update bootloader when an update to the
bootloader is available.
42iQ Low Source Instruction Manual
3-49
Operation
Settings
Health Check
The Health Check screen is used for viewing instrument status and alarms,
predictive diagnostics, preventive maintenance schedules, maintenance
history, emailing files describing the health/status of the instrument, and
viewing the instrument’s firmware version.
Note
This symbol denotes there is an active alarm in the module. ▲
Note
This symbol denotes there is an active maintenance alarm in the
module. ▲
Home Screen>Settings>Health Check
The Health Check screen contains the following information:
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42iQ Low Source Instruction Manual
●
Status and Alarms: Allows the user to view the status and alarm menus.
Menus are broken down according to modules where the user can view
instrument readings, setpoints and alarms.
●
Predictive Diagnostics: Smart module diagnostics, which shows possible
future issues.
●
Maintenance History: Allows the user to set up a maintenance schedule
and track maintenance history.
●
File Sharing and Support: File sharing via email. Support through
Thermo Fisher Scientific technical support.
●
Firmware Version: Shows the instrument’s firmware version.
Thermo Scientific
Operation
Settings
Status and Alarms
The Status and Alarms screen provides information with respect to module
alarms. In each screen, instrument readings, setpoints, and low/high alarm
values are displayed. If applicable, setpoints and alarms are also settable
from the Settings>Instrument Settings screen.
Note
This symbol denotes there is an active alarm in the module. ▲
Home Screen>Settings>Health Check>Status and Alarms
Home Screen>Settings>Health Check>Status and Alarms>More
The Status and Alarms screen contains the following information:
Thermo Scientific
●
Concentration: Displays NO/NO2/NOx concentrations and alarms.
●
Reaction Chamber: Displays reaction chamber alarms and faults.
●
Ozonator: Displays ozonator alarms and faults.
●
NO2 Converter: Displays NO2 converter alarms and faults.
●
O2 Sensor: Displays O2 sensor concentrations, alarms and faults (if
enabled).
42iQ Low Source Instruction Manual
3-51
Operation
Settings
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42iQ Low Source Instruction Manual
●
Flow and Pressure: Displays flow and pressure alarms and faults.
●
Peripherals Support: Displays peripherals support alarms and faults.
●
Valve and Pump Resets: User can reset valve and pump power.
●
Analog I/O: Displays analog input/output alarms and faults.
●
Digital I/O: Displays digital input/output alarms and faults.
●
Serial Numbers: Displays all the serial numbers for the instrument.
Thermo Scientific
Operation
Settings
Concentration
The Concentration screen provides status and alarms for NO/NO2/NOx
concentration, background cal/checks, and span cal/checks. If an item
being monitored goes outside the lower or higher alarm limit, an alarm is
activated.
Use the and buttons to move up and down and the and
buttons to move left and right.
Home Screen>Settings>Health Check>Status and
Alarms>Concentration
The Concentration screen contains the following information:
●
●
Thermo Scientific
Across:
●
Concentration: This column lists items associated with the
NO/NO2/NOx concentrations.
●
Value: Displays the current value for each item.
●
Low Alarm: Displays low alarm status for each item.
●
High Alarm: Displays high alarm status for each item.
●
Span Conc: Span concentration used in the span calibration or span
check.
●
Units: Displays units for each item.
Down:
●
NO: NO concentration.
●
NO2: NO2 concentration.
●
NOx: NOx concentration.
●
O2: O2 concentration.
42iQ Low Source Instruction Manual
3-53
Operation
Settings
●
NO Bkg Check Offset: Displays NO concentration based on the last
attempted background calibration. High alarm shows user defined
limit for acceptable background check offset.
●
NOx Bkg Check Offset: Displays NOx concentration based on the
last attempted background calibration. High alarm shows user
defined limit for acceptable background check offset.
●
NO Span Check Offset: Displays NO concentration based on the
last attempted span calibration. High alarm shows user defined
limit for acceptable span check offset (compared to the span
concentration value). Span concentration shows span setpoint.
●
NOx Span Check Offset: Displays NOx concentration based on the
last attempted span calibration. High alarm shows user defined
limit for acceptable span check offset (compared to the span
concentration value). Span concentration shows span setpoint.
Note If both the low alarm and high alarms are set to zero, then no alarm
will show. ▲
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42iQ Low Source Instruction Manual
Thermo Scientific
Operation
Settings
Reaction Chamber
The Reaction Chamber screen provides status and alarms related to the
reaction chamber module. If an item being monitored goes outside the
lower or higher alarm limit, an alarm is activated.
Use the and buttons to move up and down and the and
buttons to move left and right.
Home Screen>Settings>Health Check>Status and Alarms>Reaction
Chamber
The Reaction Chamber screen contains the following information:
●
●
Thermo Scientific
Across:
●
Chamber: This column lists items associated with the reaction
chamber.
●
Value: Displays the current value for each item.
●
Low Alarm: Displays low alarm status for each item.
●
High Alarm: Displays high alarm status for each item.
●
Units: Displays units for each item.
Down:
●
Instrument Temperature: Displays the current instrument
temperature reading.
●
Flow: Displays the current sample flow reading.
●
Chamber Pressure: Displays the current chamber pressure reading.
●
Chamber Temperature: Displays the current chamber temperature
reading. User can adjust low and high alarm limits.
●
Chamber Temp Sensor Short: Displays OK/Fail for chamber
temperature sensor short.
42iQ Low Source Instruction Manual
3-55
Operation
Settings
3-56
42iQ Low Source Instruction Manual
●
Chamber Temp Sensor Open: Displays OK/Fail for chamber
temperature sensor open.
●
Cooler Temperature: Displays OK/Fail for cooler temperature. User
can adjust low and high alarm limits.
●
Cooler Temp Sensor Short: Displays OK/Fail for cooler temperature
sensor short.
●
Cooler Temp Sensor Open: Displays OK/Fail for cooler temperature
sensor open.
●
Cooler Current: Displays the cooler current reading.
●
Cooler Current too Low: Displays OK/Fail for cooler current too
low.
●
Cooler Current too High: Displays OK/Fail for cooler current too
high.
●
Cooler Voltage: Displays the current cooler voltage reading.
●
Cooler Voltage too Low: Displays OK/Fail for cooler voltage too low.
●
Cooler Voltage too High: Displays OK/Fail for cooler voltage too
high.
●
PMT Voltage: Displays the current PMT voltage reading.
●
PMT Voltage too Low: Displays OK/Fail for PMT voltage too low.
●
PMT Voltage too High: Displays OK/Fail for PMT voltage too
high.
●
Frequency: Displays the current frequency reading.
●
Frequency too Low: Displays OK/Fail for frequency too low.
●
Frequency too High: Displays OK/Fail for frequency too high.
●
Low Gain: Displays the current low gain reading.
●
Gain: Displays the current gain reading.
●
Board Communication: Displays OK/Fail for board communication
status.
●
Power Supply: Displays OK/Fail of power supplies. Power supply
goes red if any voltages are outside their limits. No voltage rows
ever get highlighted.
●
3.3 V Diagnostic: Displays current voltage readings. Alarm
limits are not changeable.
●
5 V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
Thermo Scientific
Operation
Settings
Thermo Scientific
●
12 V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
●
-12 V Diagnostic: Displays current voltage readings. Alarm
limits are not changeable.
●
24 V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
42iQ Low Source Instruction Manual
3-57
Operation
Settings
Ozonator
The Ozonator screen provides status and alarms related to the ozonator
module. If an item being monitored goes outside the lower or higher alarm
limit, an alarm is activated.
Use the and buttons to move up and down and the and
buttons to move left and right.
Home Screen>Settings>Health Check>Status and Alarms>Ozonator
The Ozonator screen contains the following information:
●
●
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42iQ Low Source Instruction Manual
Across:
●
Ozonator: This column lists items associated with the ozonator.
●
Value: Displays the current value for each item.
●
Low Alarm: Displays low alarm status for each item.
●
High Alarm: Displays high alarm status for each item.
●
Units: Displays units for each item.
Down:
●
Ozonator Power: Displays the current ozonator power on or off.
●
Ozonator Level: Displays the current ozonator level.
●
Ozonator Flow: Displays OK/Fail for ozonator flow.
●
Ozonator Current: Displays the current ozonator Current.
●
Board Communication: Displays OK/Fail for board communication
status.
●
Power Supply: Displays OK/Fail of power supplies. Power supply
goes red if any voltages are outside their limits. No voltage rows
ever get highlighted.
Thermo Scientific
Operation
Settings
Thermo Scientific
●
3.3 V Diagnostic: Displays current voltage readings. Alarm
limits are not changeable.
●
5 V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
●
15 V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
●
24 V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
42iQ Low Source Instruction Manual
3-59
Operation
Settings
NO2 Converter
The NO2 Converter screen provides status and alarms related to the NO2
converter. If an item being monitored goes outside the lower or higher
alarm limit, an alarm is activated.
Use the and buttons to move up and down and the and
buttons to move left and right.
Home Screen>Settings>Health Check>Status and Alarms>NO2
Converter
The NO2 Converter screen contains the following information:
●
●
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42iQ Low Source Instruction Manual
Across:
●
Converter: This column lists items associated with the NO2
converter.
●
Value: Displays the current value for each item.
●
Low Alarm: Displays low alarm status for each item.
●
High Alarm: Displays high alarm status for each item.
●
Units: Displays units for each item.
Down:
●
NO2 Converter Temperature: Displays the current NO2 converter
temperature reading. User can adjust low and high alarm limits.
●
NO2 Thermocouple Open: Displays OK/Fail for NO2 thermocouple
open.
●
NO2 Thermocouple Short: Displays OK/Fail for NO2 thermocouple
short.
●
Board Communication: Displays OK/Fail for board communication
status.
Thermo Scientific
Operation
Settings
●
Thermo Scientific
Power Supply: Displays OK/Fail of power supplies. Power supply
goes red if any voltages are outside their limits. No voltage rows
ever get highlighted.
●
2.5 V Diagnostic: Displays current voltage readings. Alarm
limits are not changeable.
●
3 V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
●
3.3 V Diagnostic: Displays current voltage readings. Alarm
limits are not changeable.
●
5 V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
42iQ Low Source Instruction Manual
3-61
Operation
Settings
O2 Sensor
The O2 Sensor screen provides status and alarms related to the O2 Sensor.
If an item being monitored goes outside the lower or higher alarm limit, an
alarm is activated.
Use the and buttons to move up and down and the and
buttons to move left and right.
Home Screen>Settings>Health Check>Status and Alarms>O2 Sensor
The O2 Sensor screen contains the following information:
●
●
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42iQ Low Source Instruction Manual
Across:
●
O2 Sensor: This column lists items associated with the O2 sensor.
●
Value: Displays the current value for each item.
●
Low Alarm: Displays low alarm status for each item.
●
High Alarm: Displays high alarm status for each item.
●
Units: Displays units for each item.
Down:
●
Concentration: Displays the current O2 sensor concentration
reading. User can adjust low and high alarm limits.
●
Temperature: Displays the current temperature reading.
●
Temperature Open: Displays OK/Fail for temperature open.
●
Temperature Short: Displays OK/Fail for temperature short.
●
Sensor Element Function: Displays OK/Fail for sensor element
function.
●
Outside Operational Spec.: Displays OK/Fail for outside operational
specification.
Thermo Scientific
Operation
Settings
Thermo Scientific
●
Photodiode Current Too Low: Displays OK/Fail for Photodiode
Current Too Low.
●
Sensor Detected: Displays OK/Fail for sensor detected.
●
Sensor Communication: Displays OK/Fail for sensor
communication.
●
Valid Calibration: Displays OK/Fail for valid calibration.
●
Board Communication: Displays OK/Fail for board communication
status.
●
Power Supply: Displays OK/Fail of power supplies. Power supply
goes red if any voltages are outside their limits. No voltage rows
ever get highlighted.
●
2.5V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
●
3.3V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
●
5.0V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
●
24V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
42iQ Low Source Instruction Manual
3-63
Operation
Settings
Flow and Pressure
The Flow and Pressure screen provides status and alarms related to the flow
and pressure module. If an item being monitored goes outside the lower or
higher alarm limit, an alarm is activated.
Use the and buttons to move up and down and the and
buttons to move left and right.
Home Screen>Settings>Health Check>Status and Alarms>Flow and
Pressure
The Flow and Pressure screen contains the following information:
●
●
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42iQ Low Source Instruction Manual
Across:
●
Flow and Pressure: This column lists items associated with the flow
and pressure module.
●
Value: Displays the current value for each item.
●
Low Alarm: Displays low alarm status for each item.
●
High Alarm: Displays high alarm status for each item.
●
Units: Displays units for each item.
Down:
●
Flow: Displays the current flow reading. User can adjust low and
high alarm limits.
●
Chamber Pressure: Displays the current chamber pressure reading.
User can adjust low and high alarm limits.
●
Sample Input Pressure: Displays the current sample input pressure
reading.
●
Instrument Temperature: Displays the current instrument
temperature reading. User can adjust low and high alarm limits.
Thermo Scientific
Operation
Settings
Thermo Scientific
●
Board Communication: Displays OK/Fail for board communication
status.
●
Power Supply: Displays OK/Fail of power supplies. Power supply
goes red if any voltages are outside their limits. No voltage rows
ever get highlighted.
●
2.5V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
●
3.3V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
●
5.0V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
●
24V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
42iQ Low Source Instruction Manual
3-65
Operation
Settings
Peripherals Support
The Peripherals Support screen provides status and alarms related to the
peripherals module. If an item being monitored goes outside the lower or
higher alarm limit, an alarm is activated.
Use the and buttons to move up and down and the and
buttons to move left and right.
Home Screen>Settings>Health Check>Status and Alarms>Peripherals
Support
The Peripherals Support screen contains the following information:
●
●
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42iQ Low Source Instruction Manual
Across:
●
PSB: This column lists items associated with the peripherals
support.
●
Value: Displays the current value for each item.
●
Low Alarm: Displays low alarm status for each item.
●
High Alarm: Displays high alarm status for each item.
●
Units: Displays units for each item.
Down:
●
Module Temperature: Displays the current temperature of the
module.
●
Sample Valve: Displays whether or not the sample valve is activated.
●
Zero Valve: Displays whether or not the zero valve is activated.
●
Span Valve: Displays whether or not the span valve is activated.
●
NO/NOx Mode Valve: Displays whether or not the NO/NOx mode
valve is activated.
Thermo Scientific
Operation
Settings
Thermo Scientific
●
Pump: Displays the current pump reading.
●
Instrument Error: Displays OK/Fail for PCP, datalogging,
streaming, serial server, and Modbus protocols.
●
Board Communication: Displays OK/Fail for board communication
status.
●
Power Supply: Displays OK/Fail of power supplies. Power supply
goes red if any voltages are outside their limits. No voltage rows
ever get highlighted.
●
2.5V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
●
3.3V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
●
5.0V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
●
24V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
●
5.0V Step Board 1: Displays OK/Fail.
●
24V Step Board 1: Displays OK/Fail.
●
5.0V Step Board 2: Displays OK/Fail.
●
24V Step Board 2: Displays OK/Fail.
42iQ Low Source Instruction Manual
3-67
Operation
Settings
Valve and Pump Resets
The Valve and Pump Resets screen allows the user to reset a valve or pump
after a failure due to excessive amperage.
Note
This symbol denotes that the device needs to be reset. ▲
Note Resetting one valve will reset all valves. ▲
Home Screen>Settings>Health Check>Status and Alarms>Valve and
Pump Resets
The Valve and Pump Resets screen contains the following information:
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42iQ Low Source Instruction Manual
●
Sample Valve Reset: Resets sample valve.
●
Zero Valve Reset: Resets zero valve.
●
Span Valve Reset: Resets span valve.
●
NO/NOx Valve Reset: Resets NO/NOx valve.
●
Pump Reset: Resets pump.
Thermo Scientific
Operation
Settings
Analog I/O
The Analog I/O screen provides status and alarms related to the analog
input/output module. If an item being monitored goes outside the lower or
higher alarm limit, an alarm is activated.
Use the and buttons to move up and down and the and
buttons to move left and right.
Home Screen>Settings>Health Check>Status and
Alarms>More>Analog I/O
The Analog I/O screen contains the following information:
●
●
Thermo Scientific
Across:
●
Analog IO: This column lists items associated with the analog I/O.
●
Value: Displays the current value for each item.
●
Low Alarm: Displays low alarm status for each item.
●
High Alarm: Displays high alarm status for each item.
●
Units: Displays units for each item.
Down:
●
Voltage Output Channel 1–6: Displays real-time voltage output for
each channel.
●
Current Output Channel 1–6: Displays real-time current output for
each channel.
●
Chip Temperatures: Displays OK/Fail for chip temperatures.
●
Chip 1–3 Communication: Displays OK/Fail for each chip
communication.
●
Test Mode: Displays test mode on or off.
42iQ Low Source Instruction Manual
3-69
Operation
Settings
3-70
42iQ Low Source Instruction Manual
●
Board Communication: Displays OK/Fail for board communication
status.
●
Power Supply: Displays OK/Fail of power supplies. Power supply
goes red if any voltages are outside their limits. No voltage rows
ever get highlighted.
●
3.3V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
●
5.0V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
●
5.0V Ref Diagnostic: Displays current voltage readings. Alarm
limits are not changeable.
●
15V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
●
-15V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
Thermo Scientific
Operation
Settings
Digital I/O
The Digital I/O screen provides status and alarms related to the digital
input/output module. If an item being monitored goes outside the lower or
higher alarm limit, an alarm is activated.
Use the and buttons to move up and down and the and
buttons to move left and right.
Home Screen>Settings>Health Check>Status and
Alarms>More>Digital I/O
The Digital I/O screen contains the following information:
●
●
Thermo Scientific
Across:
●
Digital IO: This column lists items associated with the digital I/O.
●
Value: Displays the current value for each item.
●
Reset: Resets item.
●
Low Alarm: Displays low alarm status for each item.
●
High Alarm: Displays high alarm status for each item.
●
Units: Displays units for each item.
Down:
●
Solenoid 1–8: Displays whether or not the solenoid is activated by
showing the current in mA.
●
External Alarm 1–3: Displays OK/Fail for external alarms.
●
Relay Test Mode: Displays relay test mode on or off.
●
Solenoid Test Mode: Displays solenoid test mode on or off.
●
Board Communication: Displays OK/Fail for communication status.
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Operation
Settings
●
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42iQ Low Source Instruction Manual
Power Supply: Displays OK/Fail of power supplies. Power supply
goes red if any voltages are outside their limits. No voltage rows
ever get highlighted.
●
3.3V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
●
5.0V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
●
24V Diagnostic: Displays current voltage readings. Alarm limits
are not changeable.
Thermo Scientific
Operation
Settings
Serial Numbers
The Serial Numbers screen displays the serial number for each module.
Read only.
Home Screen>Settings>Health Check>Status and Alarms>More>Serial
Numbers
Home Screen>Settings>Health Check>Status and Alarms>More>Serial
Numbers>More
The Serial Numbers screen contains the following information:
Thermo Scientific
●
Instrument: Instrument serial number.
●
Reaction Chamber: Reaction chamber serial number.
●
Ozonator: Ozonator serial number.
●
NO2 Converter: NO2 converter serial number.
●
O2 Sensor Board: O2 sensor board serial number.
●
O2 Sensor: O2 sensor serial number.
●
Flow and Pressure: Flow and pressure serial number.
●
Peripherals Support: Peripherals support serial number.
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3-73
Operation
Settings
3-74
42iQ Low Source Instruction Manual
●
Analog I/O: Analog I/O serial number.
●
Digital I/O: Digital I/O serial number.
Thermo Scientific
Operation
Settings
Predictive Diagnostics
The Predictive Diagnostics screen is a feature for instruments to anticipate
maintenance needs, reduce downtime, and reduce troubleshooting time. If
button is greyed out, no maintenance is needed. If button is blue,
maintenance is suggested.
Note
This symbol denotes there is an active maintenance related
warning in the module. ▲
Home Screen>Settings>Health Check>Predictive Diagnostics
The Predictive Diagnostics screen contains the following information:
Thermo Scientific
●
Reaction Chamber
●
NO2 Converter
●
Sample Pump
●
Capillary
●
Flow Path
●
Case Fan
●
Sample Valve
●
Zero Valve
●
Span Valve
42iQ Low Source Instruction Manual
3-75
Operation
Settings
Maintenance
The Maintenance screen reminds the user when certain instrument
components need to be serviced/replaced.
Note
This symbol denotes there is an active maintenance related
warning in the module. ▲
Home Screen>Settings>Health Check>Maintenance
Home Screen>Settings>Health Check>Maintenance>Advanced
Maintenance
The Maintenance screen contains the following information:
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42iQ Low Source Instruction Manual
●
Preventive Maintenance: Shows suggested service interval and time left
for component replacement.
●
Change Part: User logs component fix.
●
Maintenance History: Shows the log of all recorded component fixes.
●
Advanced Maintenance: Resets all preventive maintenance items.
Thermo Scientific
Operation
Settings
Preventive Maintenance
The Preventive Maintenance screen reminds the user when certain
instrument components need to be serviced/replaced. When the “Months
Left” has decreased to 1, the row is highlighted yellow. If the “Months
Left” is 0 or less, the row is highlighted red and the maintenance icon
(gears) will appear in the status bar located at the bottom of the screen.
Use the and buttons to move up and down and the and
buttons to move left and right.
Home Screen>Settings>Health Check>Maintenance>Preventive
Maintenance
The Preventive Maintenance screen contains the following information:
●
●
Thermo Scientific
Across:
●
Component: Device to be routinely serviced or replaced.
●
Interval in Months: Expected period of time before a component
needs to be checked and/or serviced.
●
Months Left: Count down timer in months. Remaining time since
the beginning of the service interval. When the value is 1 or less,
the row will be highlighted and it is suggested that the component
should be checked and/or serviced.
●
Reset: Once the component is serviced/replaced, the user presses the
Reset button and the “Months Left” value resets to the “Service
Interval in Months” value.
●
Alert: Allows the user to opt out of receiving preventive
maintenance alerts. Displays Enabled/Disabled for each
component.
Down:
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Operation
Settings
●
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42iQ Low Source Instruction Manual
Reaction Chamber/Cooler: Consists of the PMT and PMT base
socket. Each highlights on their own.
●
PMT: Service interval for PMT.
●
PMT Base Socket: Service interval for PMT base socket.
●
Converter Cartridge: Service interval for converter cartridge.
●
Ozonator Assembly: Service interval for ozonator assembly.
●
NH3 Scrubber: Service interval for NH3 scrubber.
●
Permeation Dryer: Service interval for permeation dryer.
●
Flow System: Service interval for the flow system components.
●
Pump: Service interval for pump.
●
Capillary (Sample): Service interval for capillaries.
●
Capillary (Ozone): Service interval for capillaries.
●
DC Power Supply: Service interval for DC power supply.
●
Fan Filter: Service interval for fan filter.
●
System Components: Service interval for system components.
●
Purafil: Service interval for purafil.
●
Charcoal: Service interval for charcoal.
●
Dri-Rite: Service interval for dri-rite.
Thermo Scientific
Operation
Settings
Change Part
The Change Part screen allows the user to enter the component being
serviced and the type of fix. Pressing commit will update the preventive
maintenance table and predictive diagnostics screen when applicable.
Home Screen>Settings>Health Check>Maintenance>Change Part
The Change Part screen contains the following information:
Thermo Scientific
●
Select Part: User selects part to service from the selection table.
●
Fix: User chooses from new, rebuilt, cleaned, and unknown.
●
Comment: User can write a brief comment, which will be saved to the
preventive maintenance history table.
●
Commit: User commits and saves the selected part fix.
42iQ Low Source Instruction Manual
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Operation
Settings
Maintenance History
The Maintenance History screen allows the user to view when components
were replaced, rebuilt, or cleaned. When a user changes a part in the
change part screen, a new row will be automatically created at the top in
the maintenance history table.
Use the and buttons to move up and down and the and
buttons to move left and right.
Home Screen>Settings>Health Check>Maintenance>Maintenance
History
Note Retrieving maintenance history data, it may take a few seconds... ▲
The Maintenance History screen contains the following information:
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42iQ Low Source Instruction Manual
●
Part: Component that has been fixed.
●
Fix: The type of maintenance.
●
Date: Shows date/time when service was logged.
●
Service Months: Amount of time in months since last service.
●
Comments: Shows comments entered from time of change.
Thermo Scientific
Operation
Settings
Advanced Maintenance
The Advanced Maintenance screen resets all preventive maintenance items.
Home Screen>Settigs>Health Check>Maintenance>Advanced
Maintenance
Thermo Scientific
42iQ Low Source Instruction Manual
3-81
Operation
Settings
File Sharing and Support
The File Sharing and Support screen allows the user to send health check
report files to Thermo Fisher Scientific technical support or user emails.
The Health Report file includes: Status and Alarms, PM Alerts, Activity
Log, Service Database, Cal History, and Data Log (last 24 hours).
Note To create email list, go to Settings>User Contact Information. To
configure email, go to Settings>Communications>Email Server
(SMTP). ▲
Home Screen>Settings>Health Check>File Sharing and Support
The File Sharing and Support screen contains the following information:
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42iQ Low Source Instruction Manual
●
Download Health Check Report to USB Drive: Sends the health report to
USB drive.
●
Email Health Check Report File to Technical Support: Sends the health
report file to technical support and the customer email addresses via
email.
●
Email Health Check Report to Personal Account: Sends the health report
file to a personal account via email.
●
iQ360: The iQ360 feature is a paid subscription enabling or disabling
the instrument to send automated emails to technical support when an
alarm or alert is triggered.
●
Request a Field Service Visit: Sends a field service visit to technical
support.
Thermo Scientific
Operation
Settings
Measurement
Settings
The Measurement Settings screen contains a number of submenus where
instrument parameters and settings can be read and modified.
Home Screen>Settings>Measurement Settings
The Measurement Settings screen contains the following information:
Thermo Scientific
●
Averaging Time: Sets the averaging time for the NO, NO2, and NOx
sample measurements.
●
Range Mode Selection: User can choose between the various range
modes: single, dual, or auto. For more information, see “Range Mode
Selection” on page 3-87.
●
Range Setting: Defines the concentration range for the analog outputs.
●
Gas Mode: User can manually choose sample, zero or span mode.
●
Gas Units: Defines how the NO, NO2, and NOx concentration
readings are expressed.
●
Dilution Ratio: Serves as a multiplier when dilution gas is utilized.
●
Advanced Measurement Settings: Advanced settings affecting NO, NO2,
and NOx readings.
42iQ Low Source Instruction Manual
3-83
Operation
Settings
Averaging Time
The Averaging Time screen allows the user to choose dynamic filter or a
manually selected (static) averaging time.
The following screens are shown in single range mode and dual or auto
range mode. In the dual and auto range modes, both the “High Range” or
“Low Range ” averaging buttons will be available.
Averaging Time defines the time period (1 to 300 seconds) during which
NO, NO2, and NOx measurements are taken. The average concentration of
the readings are calculated for that time period. The front panel display and
analog outputs are updated every 10 seconds for averaging times between
10 and 300 seconds. For averaging times of 1, 2, and 5 seconds, the front
panel display and analog outputs are updated every second. An averaging
time of 10 seconds, for example, means that the average concentration of
the last 10 seconds will be displayed every 10 seconds. An averaging time of
300 seconds means that the moving average concentration of the last 300
seconds will be the output at each update. Therefore, the lower the
averaging time the faster the front panel display and analog outputs
respond to concentration changes. Longer averaging times are typically
used to smooth output data.
Dynamic Filtering allows for data smoothing without compromising
response time. Automatically changes the averaging time giving the user
faster response times when conditions are rapidly changing; smoother and
stable readings, when conditions aren’t changing as rapidly; and as an
added bonus, it better processes spikes to minimize their impact on the
data. At the same time it will preserve the representative nature of the
filtered data to the conditions being sampled.
Note When Dynamic Filtering is selected, the user selected Averaging
Time button is disabled. ▲
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42iQ Low Source Instruction Manual
Thermo Scientific
Operation
Settings
Home Screen>Settings>Measurement Settings>Averaging Time (single
range mode and O2 option)
Home Screen>Settings>Measurement Settings>Averaging Time (dual
or auto range mode and O2 option)
The Averaging Time screen contains the following information:
Thermo Scientific
●
Dynamic Filtering: Enables/disables dynamic filtering when in single
range mode.
●
High Range Dynamic Filtering: Enables/disables high range dynamic
filtering when in dual or auto range mode.
●
Low Range Dynamic Filtering: Enables/disables low range dynamic
filtering when in dual or auto range mode.
●
Averaging Time: Sets averaging time period when in single range mode
and when dynamic filtering is disabled.
●
High Range Averaging Time: Sets high averaging time when in dual or
auto range mode and when dynamic filtering is disabled.
●
Low Range Averaging Time: Sets high averaging time when in dual or
auto range mode and when dynamic filtering is disabled.
42iQ Low Source Instruction Manual
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Operation
Settings
●
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42iQ Low Source Instruction Manual
O2 Averaging Time: Sets high averaging time when in dual or auto
range mode and when dynamic filtering is disabled and the O2 sensor is
enabled.
Thermo Scientific
Operation
Settings
Range Mode Selection
The Range Mode Selection screen is used to switch between the various
range modes: Single, Dual, and Auto Range.
Home Screen>Settings>Measurement Settings>Range Mode Selection
The Range Mode Selection screen contains the following information:
●
Single: In single range mode, there is one range, one averaging time,
and one span coefficient.
●
Dual: In the dual range mode, there are two independent analog
outputs. These are labeled simply as the “High Range” and the “Low
Range”. Each channel has its own analog output range setting,
averaging time, and span coefficient.
This enables the sample concentration reading to be sent to the analog
outputs at two different ranges. For example, the low NO analog
output can be set to output concentrations from 0 to 200 ppb and the
high NO analog output set to output concentrations from 0 to 500
ppb.
In addition to each channel having two ranges, each channel has two
span coefficients. There are two span coefficients so that each range can
be calibrated separately. This is especially necessary if the two ranges are
not close to one another. For example, the low NO range is set to 0–
200 ppb and the high NO range is set to 0–20000 ppb.
●
Auto: The auto range mode switches the NO, NO2, and NOx analog
outputs between high and low range settings, depending on the
concentration level. The high and low ranges are defined in the Range
Settings screen.
For example, suppose the low range is set to 200 ppb and the high
range is set to 1000 ppb, as shown below. Sample concentrations below
200 ppb are output based on low range selection and sample
Thermo Scientific
42iQ Low Source Instruction Manual
3-87
Operation
Settings
concentrations above 200 ppb are output based on high range
selection. When the low range is active, the range mode selection status
output is at 0 volts. When the high range is active, the range mode
selection status output is at half of full-scale.
When the high range is active, the NOx concentration must drop to
95% of the low NOx range for the low range to become active.
In addition to each channel having two ranges, each channel has two
span coefficients. There are two span coefficients so that each range can
be calibrated separately. This is especially necessary if the two ranges are
not close to one another. For example, the low NO range is set to 0–
200 ppb and the high NO range is set to 0–20000 ppb.
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42iQ Low Source Instruction Manual
Thermo Scientific
Operation
Settings
Range Settings
The Range Settings screen defines the concentration range of the analog
outputs. For example, an NO2 range of 0–200 ppb restricts the NO2
analog output to concentrations between 0 and 200 ppb.
The screen shows the current NO, NO2, and NOx range. The range screen
is similar for the single, dual, and auto range modes. The only difference
between the screens are the words “High” or “Low” displayed to indicate
which range is displayed. For more information about the dual and auto
range modes, see “Range Mode Selection” on page 3-87. Pressing Range
Setting, High Range Setting or Low Range Setting, brings up a numeric
keypad whereby the user can select a range.
Home Screen>Settings>Measurement Settings>Range Mode Selection
(single range mode)
Home Screen>Settings>Measurement Settings>Range Mode Selection
(dual or auto range mode)
The Measurement Settings screen contains the following information:
●
Thermo Scientific
NO Range Setting: Sets the NO concentration range for the analog
outputs when in single range mode.
42iQ Low Source Instruction Manual
3-89
Operation
Settings
●
High Range NO Setting: Sets the high range NO concentration range
for the analog output when in dual or auto range mode.
●
Low Range NO Setting: Sets the low range NO concentration range for
the analog output when in dual or auto range mode.
●
NO2 Range Setting: Sets the NO2 concentration range for the analog
outputs when in single range mode.
●
High Range NO2 Setting: Sets the high range NO2 concentration range
for the analog output when in dual or auto range mode.
●
Low Range NO2 Setting: Sets the low range NO2 concentration range
for the analog output when in dual or auto range mode.
●
NOx Range Setting: Sets the NOx concentration range for the analog
outputs when in single range mode.
●
High Range NOx Setting: Sets the high range NOx concentration range
for the analog output when in dual or auto range mode.
●
Low Range NOx Setting: Sets the low range NOx concentration range
for the analog output when in dual or auto range mode.
Settable ranges according to unit selection include:
3-90
42iQ Low Source Instruction Manual
ppb
200100000 ppb
ppm
0.2100 ppm
%
0.00010.05 %
μg/m3
500150000 μg/m3
mg/m3
0.5150 mg/m3
g/m3
0.0005.150 g/m3
Thermo Scientific
Operation
Settings
Gas Mode
The Gas Mode screen defines what gas mode the instrument is set to.
Home Screen>Settings>Measurement Settings>Gas Mode
The Gas Mode screen contains the following information:
Thermo Scientific
●
Sample: Sets the instrument to measure sample gas.
●
Zero: Used when calibrating the background of the instrument. When
pressed, sets the instrument to zero mode.
●
Span: Used when calibrating the span coefficient. When pressed, sets
the instrument to span mode.
42iQ Low Source Instruction Manual
3-91
Operation
Settings
Gas Units
The Gas Units screen defines how the NO, NO2, and NOx concentration
readings are expressed. The μg/m3, mg/m3, and g/m3 gas concentration
modes are calculated using a standard pressure of 760 mmHg and a
standard temperature of 0 °C.
Use the and buttons to move up and down.
Home Screen>Settings>Measurement Settings>Gas Units
The Gas Units screen contains the following information:
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42iQ Low Source Instruction Manual
●
ppb: parts per billion.
●
ppm: parts per million.
●
%: percent.
●
μg/m3: micrograms per meter cubed.
●
mg/m3: milligrams per meter cubed.
●
g/m3: grams per meter cubed.
Thermo Scientific
Operation
Settings
Advanced Measurement
Settings
The Advanced Measurement Settings screen allows the user to calibrate the
reaction chamber and set other advanced settings.
Home Screen>Settings>Measurement Settings>Advanced Measurement
Settings
The Advanced Measurements Settings screen contains the following
information:
Thermo Scientific
●
Reaction Chamber Settings: User can calibrate Input board and PMT.
●
Auto/Manual Mode: User can choose to measure single gas or switching
mode.
●
Extended Ranges: Enables/disables extended ranges feature.
●
Compensation: Allows the user to compensate for changes in
temperature and pressure concentration, and O2 (if enabled).
●
Pressure Calibration: Calibrates pressure.
42iQ Low Source Instruction Manual
3-93
Operation
Settings
Reaction Chamber
Settings
The Reaction Chamber Settings screen allows the user to calibrate the
Input board and PMT.
Use the and buttons to move up and down and the and
buttons to move left and right.
Home Screen>Settings>Measurement Settings>Advanced Measurement
Settings>Reaction Chamber Settings
Home Screen>Settings>Measurement Settings>Advanced Measurement
Settings>Reaction Chamber Settings>Continue to Input Board
Calibration Screen
The Input Board Calibration screen contains the following information:
●
3-94
42iQ Low Source Instruction Manual
Across:
●
Description: Defines the actions the user can do.
●
Input Board Cal: User can manually adjust the input board value,
start/stop automatic calibration, read voltage, frequency and zero
offset frequency values, and reset default values.
●
Units: Displays units for each item.
Thermo Scientific
Operation
Settings
●
Down:
●
Manual Entry: Shows current value. If the input board cal cell is
pressed, user can manually change the value.
●
Auto Cal: When pressed, the auto-calibration process is initiated.
Please allow up to 5 minutes for calibration to complete.
●
End Cal: When pressed, the auto calibration is interrupted and the
value does not change.
●
PMT Voltage: Displays PMT voltage.
●
Frequency: Displays frequency.
●
Zero Offset Freq: Displays zero offsets frequency.
●
Default Values: When pressed, the default values are saved.
Home Screen>Settings>Measurement Settings>Advanced Measurement
Settings>Reaction Chamber Settings>Continue to PMT Calibration
Screen
The PMT Calibration screen contains the following information:
●
Thermo Scientific
Across:
●
Description: Defines the actions the user can do.
●
PMT Supply: User can manually adjust the PMT supply value,
adjust target concentration and read calibration concentration,
start/stop automatic calibration, read voltage, frequency and zero
offset frequency values, and reset default values.
●
Current PMT: Displays the current PMT voltage value.
●
Units: Displays units for each item.
42iQ Low Source Instruction Manual
3-95
Operation
Settings
●
3-96
42iQ Low Source Instruction Manual
Down:
●
Manual Entry: Shows current value. If the PMT supply cell is
pressed, user can manually change the value.
●
Target Concentration: Displays target concentration. If target
concentration cell is pressed, user can enter target concentration.
●
Calibration Concentration: Displays calibration concentration.
●
Auto Calibration: When pressed, the auto-calibration process is
initiated. Please allow up to 5 minutes for calibration to complete.
PMT voltage is automatically adjusted until calibration
concentration is with 1% of target concentration.
●
End Calibration: When pressed, the auto calibration is interrupted
and the value does not change.
●
Default PMT Supply: When pressed, the default PMT supply value
is saved.
Thermo Scientific
Operation
Settings
Auto/Manual Mode
The Auto/Manual Mode screen is used to display single gases or multiple
gases (switching mode).
Use the and buttons to move up and down and the and
buttons to move left and right.
Home Screen>Settings>Measurement Settings>Advanced Measurement
Settings>Extended Ranges
The Auto/Manual Mode screen contains the following information:
Thermo Scientific
●
NO/NOx
●
NO
●
NOx
42iQ Low Source Instruction Manual
3-97
Operation
Settings
Compensation
The Compensation screen provides compensation for any changes to the
instrument’s output signal due to internal instrument temperature,
pressure, and oxygen variations (if enabled).
Home Screen>Settings>Measurement Settings>Advanced Measurement
Settings>Compensation
The Compensation screen contains the following information:
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42iQ Low Source Instruction Manual
●
Temp Compensation: Toggles temperature compensation enabled or
disabled and provides compensation for any changes to the
instrument's output signal due to internal instrument temperature
variations. The effects of internal instrument temperature changes on
the analyzer's subsystems and output have been empirically determined.
This empirical data is used to compensate for any changes in
temperature.
●
Pressure Compensation: Toggles pressure compensation enabled or
disabled and provides compensation for any changes to the
instrument's output signal due to bench pressure variations. The effects
of bench pressure changes on the analyzer's subsystems and output have
been empirically determined. This empirical data is used to compensate
for any change in chamber pressure.
●
O2 Correction: Allows for the correction of the NO, NO2, and NOx
concentrations based on O2 readings.
Thermo Scientific
Operation
Settings
O2 Correction
When O2 correction is enabled, the following equation is applied to the
NO, NO2, and NOx concentration values to generate a corrected value.
The corrected value may be output on the analog outputs, stored in logging
memory, or output as streaming data. The corrected values are not
displayed on the Home Screen on the front panel, only the non-corrected
values.
20.9 O 2corr
Ccomp @ O 2corr C *
20
.
9
O 2meas
Abbreviations: C is the measured concentration, O2corr is the oxygen
concentration that C is corrected to (this value is set by the user in the
Source O2 Concentration Setpoint screen and defaults to 15%). O2meas is
the measured O2 concentration, which is clamped at 20.8% to prevent
divide-by-zero errors. Ccomp is the corrected concentration that may be used
for analog outputs or datalogging.
Home Screen>Settings>Measurement Settings>Advanced Measurement
Settings>Compensation>O2 Correction (single range mode)
Thermo Scientific
42iQ Low Source Instruction Manual
3-99
Operation
Settings
Home Screen>Settings>Measurement Settings>Advanced Measurement
Settings>Compensation>O2 Correction (dual or auto range mode)
The O2 Correction screen contains the following information:
3-100
42iQ Low Source Instruction Manual
●
Source O2 Concentration Setpoint: User sets the expected O2 sample
concentration.
●
Current O2 Concentration: Read only. Displays the current O2
concentration.
●
Corrected NO Concentration: Read only. Displays the corrected NO
concentration when in single range mode.
●
Corrected NO2 Concentration: Read only. Displays the corrected NO2
concentration when in single range mode.
●
Corrected NOx Concentration: Read only. Displays the corrected NOx
concentration when in single range mode.
●
Corrected High Range NO Concentration: Read only. Displays the
corrected high range NO concentration when in dual or auto range
mode.
●
Corrected High Range NO2 Concentration: Read only. Displays the
corrected high range NO2 concentration when in dual or auto range
mode.
●
Corrected High Range NOx Concentration: Read only. Displays the
corrected high range NOx concentration when in dual or auto range
mode.
●
Corrected Low Range NO Concentration: Read only. Displays the
corrected low range NO concentration when in dual or auto range
mode.
●
Corrected Low Range NO2 Concentration: Read only. Displays the
corrected low range NO2 concentration when in dual or auto range
mode.
Thermo Scientific
Operation
Settings
●
Thermo Scientific
Corrected Low Range NOx Concentration: Read only. Displays the
corrected low range NOx concentration when in dual or auto range
mode.
42iQ Low Source Instruction Manual
3-101
Operation
Settings
Pressure Calibration
The Pressure Calibration screen is used to calibrate the pressure sensor to
zero, span, or factory default values.
Use the and buttons to move up and down and the and
buttons to move left and right.
Home Screen>Settings>Measurement Settings>Advanced Measurement
Settings>Pressure Calibration
The Pressure Calibration screen contains the following information:
●
●
Across:
●
Description: Lists items in table.
●
Reading: Displays reading of each pressure sensor.
●
Calibration: Starts calibration or resets default values.
Down:
●
●
●
●
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42iQ Low Source Instruction Manual
Sensor 13 Reading: Under the column labeled Reading, current
reading of each pressure sensor.
Atmospheric Sensor 13: Under the column labeled reading, the user
enters the current atmospheric pressure in mmHg units. Under the
column labelled Calibration, the user presses the Start button to
calibrate the high point of the sensor.
Zero Sensor 13: User should put the pressure sensor under a strong
vacuum. Under the column labeled reading, the user enters the
pressure in mmHg. Under the column labeled Calibration, the user
presses the Start button to calibrate the low point of the sensor.
Reset all values: Resets values to default.
Thermo Scientific
Operation
Settings
Communications
The Communications screen allows the user to set TCP/DHCP
parameters, Serial settings, Analog I/O and Digital I/O, Email Server, and
Instrument ID. Buttons are grayed out if not selected in
Settings>Configuration.
Home Screen>Settings>More>Communications
The Communications screen contains the following information:
Thermo Scientific
●
Wired TCP/DHCP: Settings for communicating with the instrument
through wired Ethernet.
●
Serial RS-232/485: Settings for communicating with the instrument
through RS-232/485 protocol. This is only visible if selected in
Settings>Configuration>Communications Board.
●
Analog I/O: Settings for communicating with the instrument through
analog I/O settings. This is only visible if selected in
Settings>Configuration>Analog I/O.
●
Digital I/O: Settings for communicating with the instrument through
digital I/O settings. This is only visible if selected in
Settings>Configuration>Digital I/O.
●
Email Server (SMTP): Settings for communication with email.
●
Instrument ID: Allows the user to edit the instrument identification
number (ID). The ID is used to identify the instrument when using
protocols to control the instrument or collect data. It may be necessary
to edit the ID number if two or more of instruments of the same model
are connected to one computer. Valid instrument ID numbers are from
0 to 127. The 42iQLS has a default instrument ID of 1.
42iQ Low Source Instruction Manual
3-103
Operation
Settings
Wired TCP/DHCP
The Wired TCP/DHCP screen allows the user to communicate with the
instrument via wired TCP/IP settings.
Note When DHCP is enabled, the dynamic IP address is used. When
DHCP is disabled, the static IP address is used. ▲
Home Screen>Settings>More>Communications> Wired TCP/DHCP
(with DHCP enabled)
Home Screen>Settings>More>Communications>Wired TCP/DHCP
(with DHCP disabled)
The Wired TCP/DHCP screen contains the following information:
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42iQ Low Source Instruction Manual
●
DHCP: Toggles DHCP enabled/disabled.
●
Dynamic IP Address: Dynamic IP address of the instrument.
●
Dynamic Netmask: Dynamic Netmask of instrument.
●
Dynamic Gateway: Dynamic Gateway of instrument.
Thermo Scientific
Operation
Settings
Thermo Scientific
●
Static IP Address: Static IP address of the instrument. This is settable
when DHCP is disabled.
●
Static Netmask: Static Netmask of instrument. This is settable when
DHCP is disabled.
●
Static Gateway: Static Gateway of instrument. This is settable when
DHCP is disabled.
●
DNS Server Address: DNS IP address of instrument. This is settable
when DHCP is disabled.
●
Wired MAC Address: Instrument MAC address.
●
Host Name: Host name of instrument.
42iQ Low Source Instruction Manual
3-105
Operation
Settings
Serial RS-232/485
The Serial RS-232/485 screen allows the user to setup serial
communication. This is only visible if selected in
Settings>Configuration>Communications Board.
Home Screen>Settings>More>Communications>Serial RS-232/485
The Serial RS-232/485 screen contains the following information:
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42iQ Low Source Instruction Manual
●
Protocol: User selects Modbus or Streaming.
●
Baud Rate: User selectable baud rates from 1200 to 115200.
●
Bits: User selectable between 7 and 8.
●
Parity: User selectable between None, Even, and Odd.
●
Stop Bits: User selectable between 1 and 2.
●
RS 232/485: User selectable between RS-232 and RS-485.
Thermo Scientific
Operation
Settings
Analog I/O
The Analog I/O screen allows for configuring the analog inputs/outputs.
This is only visible if selected in Settings>Configuration>Analog I/O.
Home Screen>Settings>More>Communications>Analog I/O
The Analog I/O screen contains the following information:
Thermo Scientific
●
Analog In: Allows the user to view and calibrate voltage inputs from
external devices.
●
Analog Out (Voltage): Allows the user to view voltage outputs.
●
Analog Out (Current): Allows the user to view current (mA) outputs.
●
Analog Out Under/Over Range Enabled/Disabled: Allows the user to
select whether or not the analog outputs are allowed to exceed the
selected output range.
42iQ Low Source Instruction Manual
3-107
Operation
Settings
Digital I/O
The Digital I/O screen allows for configuring the digital inputs/outputs.
This is only visible if selected in Settings>Configuration>Digital I/O.
Home Screen>Settings>Communications>Digital I/O
The Digital I/O screen contains the following information:
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42iQ Low Source Instruction Manual
●
Digital In: Allows the user to view digital inputs from external devices.
●
Digital Out (Relays): Allows the user to view relay outputs.
●
Digital Out (Solenoids): Allows the user to view solenoid outputs.
●
Advanced Digital I/O: Allows user to test the digital out relays and
solenoids.
Thermo Scientific
Operation
Settings
Email Server (SMTP)
The Email Server (SMTP) screen allows the user to configure their email
preferences.
Home Screen>Settings>More>Communications>Email Server (SMTP)
The Email Server (SMTP) screen contains the following information:
Thermo Scientific
●
SMTP Server Address: Address of the user’s email server.
●
From Email Address: The email address that goes in the From field in
emails.
●
SMTP Server Port: Server port of user’s email server.
●
Email Password: Password for SMTP server.
●
Email UserName: User name that is authorized to send email through
SMTP server.
42iQ Low Source Instruction Manual
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Operation
Settings
Instrument Settings
The Instrument Settings screen allows the user to configure various
instrument settings.
Home Screen>Settings>Instrument Settings
Home Screen>Settings>Instrument Settings>More
The Instrument Settings screen contains the following information:
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42iQ Low Source Instruction Manual
●
Titlebar Setup: User chooses what concentration reading to display on
the titlebar.
●
Instrument Setpoints: View and set all available setpoints.
●
Alarm Setpoints: View and set all available alarm minimum and
maximum values.
●
Ozonator Safety Enabled/Disabled: Enables/disables ozonator safety.
●
PMT Supply Enabled/Disabled: Enables/disables PMT supply.
●
Ozonator Supply Enabled/Disabled: Enables/disables ozonator supply.
●
Display Setup: Sets touchscreen display settings.
●
Clock: Sets date and time.
Thermo Scientific
Operation
Settings
Thermo Scientific
●
Language: Read only.
●
Pump Power: Manually enables/disables the pump.
42iQ Low Source Instruction Manual
3-111
Operation
Settings
Instrument Setpoints
The Instrument Setpoints screen allows the user to view and set all settable
instrument setpoints.
Use the and buttons to move up and down and the and
buttons to move left and right.
Home Screen>Settings>Instrument Settings>Instrument Setpoints
The Instrument Setpoints screen contains the following information:
●
●
Across:
●
Variable: Lists the items that have settable setpoints.
●
Setpoint: User sets setpoint for item.
●
Units: Units for each item (not settable).
Down:
●
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42iQ Low Source Instruction Manual
NO2:Converter Temperature: NO2 converter temperature setpoint.
Thermo Scientific
Operation
Settings
Alarm Setpoints
The Alarm Setpoints screen allows the user to view and set all settable
alarm minimum and maximum values. Alarm setpoints can also be set in
Settings>Health Check>Status and Alarms screens.
Note User cannot set alarm limits outside of the acceptable range. The
minimum and maximum alarm limit can also be set by pressing on the
corresponding buttons located in the Settings>Health Check>Status and
Alarms screen. See “Status and Alarms” on page 3-51. ▲
Use the and buttons to move up and down and the and
buttons to move left and right.
Home Screen>Settings>Instrument Settings>Alarm Setpoints
The Alarm Setpoints screen contains the following information:
●
●
Thermo Scientific
Across:
●
Variable: Lists the items that have settable alarm limits.
●
Value: Displays the current value for each item.
●
Low Alarm: User sets low alarm for item.
●
High Alarm: User sets high alarm for item.
●
Units: Units for each item (not settable).
Down:
●
NO Concentration: NO concentration alarm.
●
NO2 Concentration: NO2 concentration alarm.
●
NOx Concentration: NOx concentration alarm.
●
O2 Concentration: O2 concentration alarm.
42iQ Low Source Instruction Manual
3-113
Operation
Settings
3-114
42iQ Low Source Instruction Manual
●
NO Bkg Check Offset: User can set the maximum allowable
background reading offset for calibration and calibration checks.
This is set with the high alarm only.
●
NOx Bkg Check Offset: User can set the maximum allowable
background reading offset for calibration and calibration checks.
This is set with the high alarm only.
●
NO Span Check Offset: User can set the maximum allowable span
reading offset for calibration and calibration checks. This is set with
the high alarm only.
●
NOx Span Check Offset: User can set the maximum allowable span
reading offset for calibration and calibration checks. This is set with
the high alarm only.
●
Instrument Temperature: Instrument temperature alarm.
●
Chamber Pressure: Bench pressure alarm.
●
Flow: Flow pressure alarm.
●
Chamber Temperature: Bench temperature alarm.
●
Cooler Temperature: Cooler temperature alarm.
●
NO2 Converter Temperature: NO2 converter temperature alarm.
Thermo Scientific
Operation
Settings
Display Setup
The Display Setup allows the user to change the brightness of the display
and choose power save option.
Home Screen>Settings>Instrument Settings>Display Setup
The Display Setup screen contains the following information:
Thermo Scientific
●
Power Save: Minutes before screen times out. Toggles enable/disable.
●
Power Save Setting: Option whereby the user can display a black screen
after a set amount of inactivity.
●
Brightness: Sets the brightness of the display.
42iQ Low Source Instruction Manual
3-115
Operation
Settings
Clock
The Clock screen allows the user to set the instrument’s date and time,
choose date/time format, time zone, and time server.
Home Screen>Settings>Instrument Settings>Clock
The Clock screen contains the following information:
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42iQ Low Source Instruction Manual
●
Month
●
Day
●
Year
●
Hours
●
Minutes
●
Seconds
●
Date / Time Parameters: User chooses time zone, timer server, and date
format.
●
Commit: When pressed, date and time are saved.
Thermo Scientific
Operation
Settings
Date / Time Parameters
The Date / Time Parameters screen allows the user to choose time zone,
time server and date format.
Home Screen>Settings>Instrument Settings>Clock>Date / Time
Parameters
The Date / Time Parameters screen contains the following information:
Thermo Scientific
●
Time Zone: User selects time zone from table.
●
Time Server Enabled/Disabled: User can enabled/disable the time server
to get periodic clock updates.
●
Date Format: User selects date format.
42iQ Low Source Instruction Manual
3-117
Operation
Settings
Time Zone
The Time Zone screen allows the user to set the time zone for the Network
Time Protocol (NTP) server. This should be set to the time zone that the
instrument is located in.
Use the and buttons to move up and down.
Home Screen>Settings>Instrument Settings>Clock>Date / Time
Parameters>Time Zone
The Time Zone screen contains the following information:
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42iQ Low Source Instruction Manual
●
Date Line West(UTC-12)
●
Samoa Time Zone(UTC-11)
●
Aleutian Time Zone(UTC-10)
●
Alaskan Time Zone(UTC-9)
●
Pacific Time Zone(UTC-8)
●
Pacific Daylight Savings(UTC-7)
●
Mountain Time Zone(UTC-7)
●
Mountain Daylight Savings(UTC-6)
●
Central Time Zone(UTC-6)
●
Central Daylight Savings((UTC-5)
●
Eastern Time Zone(UTC-5)
●
Eastern Daylight Savings(UTC-4)
●
Atlantic Time Zone(UTC-4)
●
Mid-Atlantic(UTC-3)
●
South Georgia(UTC-2)
Thermo Scientific
Operation
Settings
Thermo Scientific
●
Cape Verde Time(UTC-1)
●
Coordinated Universal Time(UTC-0)
●
Central European Time(UTC+1)
●
Eastern European Time(UTC+2)
●
Further-Eastern European Time(UTC+3)
●
Gulf Standard Time(UTC+4)
●
Yekaterinburg Time(UTC+5
●
Omsk Time(UTC+6)
●
Indochina Time(UTC+7)
●
ASEAN Common Time(UTC+8)
●
Japan Standard Time(UTC+9)
●
Chamorro Time Zone(UTC+10)
●
Sredmnekolymsk Time(UTC+11)
●
New Zealand Standard Time(UTC+12)
42iQ Low Source Instruction Manual
3-119
Operation
Settings
Time Server
The Time Server screen allows the user to enable/disable the time server to
get periodic clock updates.
Home Screen>Settings>Instrument Settings>Clock>Date / Time
Parameters>Time Server
The Time Server screen contains the following information:
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42iQ Low Source Instruction Manual
●
Time Server: Enables/Disables periodic clock updates from an NTP
(Network Time Protocol) source.
●
Set Time Server: User can choose specific time server.
●
Set Default: When pressed, default time server will be used.
Thermo Scientific
Operation
Settings
Date Format
The Date Format screen allows the user to choose from the following
formats: mm/dd/yyyy or dd/mm/yyyy.
Use the and buttons to move up and down.
Home Screen>Settings>Instrument Settings>Clock>Date / Time
Parameters>Date Format
The Date Format screen contains the following information:
Thermo Scientific
●
U.S. Format mm/dd/yyyy
●
European Format dd/mm/yyyy
●
ISO 8601 yyyy-mm-dd
42iQ Low Source Instruction Manual
3-121
Operation
Settings
Configuration
The Configuration screen allows the user to enable optional features.
Use the and buttons to select the variables. Next, press the Commit
Changes button to save selections. Yellow buttons indicate that the
variable is selected. More than one can be chosen.
Home Screen>Settings>Configuration
The Configuration screen contains the following information:
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42iQ Low Source Instruction Manual
●
Converter Molybdenum: Select if molybdenum converter is used.
●
Converter Stainless Steel: Select if stainless steel converter is used.
●
Zero Span Assembly: Enables zero/span valves.
●
Oxygen Sensor: Enables O2 sensor option.
●
Communications Board (RS485): Enables RS485 communication board.
●
Predictive Diagnostics: Enables predictive diagnostics.
●
Analog I/O: Enables analog I/O option.
●
Digital I/O: Enables digital I/O option.
Thermo Scientific
Operation
Settings
Security Access
Levels
The Access Levels screen allows the user to set the instrument to either
View Only or Full Access. When in Full Access, the user will have access to
all screens. When set to View Only, user will not be able to change any
values.
Home Screen>Settings>Security Access Levels (Full Access)
Home Screen>Settings>Security Access Levels (View Only Access)
The Security Access Levels screen contains the following information:
Thermo Scientific
●
Current Security Access Full Access: Read only. User will be able to
change all values. Password is needed for full access.
●
Current Security Access View Only: Read only. User won’t be able to
change any values. Password is not needed for view only.
●
Change Security Access to View Only: User can switch to view only
mode. Password not needed to change settings to view only access.
●
Change Security Access to Full Access: User can switch to full access
mode. Password is needed to change settings to full access.
42iQ Low Source Instruction Manual
3-123
Operation
Settings
●
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42iQ Low Source Instruction Manual
Change Full Access Security Password: Full access password can have a
blank value or user selected password.
Thermo Scientific
Operation
Settings
Change Security to View
Only Access
The Change Security to View Only Access screen allows the user to set the
instrument to view only.
Home Screen>Settings>Security Access Levels>Change Security Access
to View Only Access
The Change Security to View Only Access screen contains the following
information:
●
Set Access Level to View Only: Programs the instrument to be in the view
only access level, where the user won’t be able to change any values.
●
Cancel: Exit screen.
Note To change security access from view only access to full access, a
keypad will be displayed where the user can enter full access password. ▲
Thermo Scientific
42iQ Low Source Instruction Manual
3-125
Operation
Settings
Change Full Access
Security Password
The Change Full Access Security Password screen allows the user to set a
new password for allowing full access.
Home Screen>Settings>Security Access Levels>Change Full Access
Security Password
Home Screen>Settings>Security Access Levels>Change Full Access
Security Password>Continue
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42iQ Low Source Instruction Manual
Thermo Scientific
Operation
Settings
The Change Full Access Security Password screens contain the following
information:
Thermo Scientific
●
Enter Current Security Password: User enters current security password.
●
Continue: Proceeds to next screen.
●
Enter New Security Access Password: User enters new security password.
●
Confirm New Security Access Password: User confirms new security
password for spelling confirmation.
●
Commit New Security Access Password Change: Commits new security
password.
●
Cancel and Return to the Home Screen: Exits screen and returns to the
Home Screen without changing password.
42iQ Low Source Instruction Manual
3-127
Operation
Settings
USB Drive
The USB Drive screen allows the user to update firmware,
download/upload information, and change the USB password.
Note The USB drive screen only is useable when a USB drive is inserted
into the USB port. When a USB drive is inserted, the user is prompted to
enter the password if a password has been set. ▲
Home Screen>Settings>USB Drive
The USB Drive screen contains the following information:
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42iQ Low Source Instruction Manual
●
Firmware Update Via USB Drive: If USB is mounted, user can update
instrument firmware.
●
Download Data To USB Drive: User can download/upload
information.
●
Change USB Password: User can change the USB password.
Thermo Scientific
Operation
Settings
Firmware Update Via
USB Drive
The Firmware Update Via USB Drive screen allows the user to update
instrument firmware from the USB drive.
Home Screen>Settings>USB Drive>Firmware Update Via USB Drive
The Firmware Update Via USB Drive screen contains the following
information:
Thermo Scientific
●
Update Firmware: User chooses firmware file from USB and updates
instrument firmware. Instrument reboots when update is finished.
●
Exit: User exits without updating firmware.
42iQ Low Source Instruction Manual
3-129
Operation
Settings
Download Data To USB
Drive
The Download Data To USB Drive screen allows the user to
download/upload data to/from the USB drive.
Home Screen>Settings>USB Drive>Download Data To USB Drive
The Download Data to USB Drive screen contains the following
information:
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42iQ Low Source Instruction Manual
●
Download Health Check Report: Includes status and alarms, preventive
maintenance, and maintenance history.
●
Download Entire Data Log: Includes the entire data log (from data
logging).
●
Download Service Log: Includes a complete listing of data for all
variables. This is set at the factory.
●
Download System Log: Consists of system log text files, which include a
listing of system errors.
●
Download Calibration History: Includes the data in the calibration
history screen.
●
Download Configuration Data Backup to USB: Allows the user to
download the configuration file from the instrument to the USB.
●
Upload Configuration Data Restore from USB: Allows the user to upload
the configuration files from the USB to the instrument.
●
Restore: Allows the user to upload the configuration files from the USB
to the instrument.
●
Download All Data: Downloads all reports, logs, histories, and backup
information.
Thermo Scientific
Operation
Settings
Use the following procedure to download data using the USB connection.
1. Plug a flash drive into the USB connection on the front of the
instrument. If a USB password has been previously set, you will be
prompted to enter the USB password to continue. Press Enter to
continue.
2. To continue, select the OK button.
3. The USB Drive will display. Select Download Data To USB Drive.
Thermo Scientific
42iQ Low Source Instruction Manual
3-131
Operation
Settings
4. The Download Data to USB Drive screen will display. Select from
various options to download.
5. The instrument will display a “downloading data” message and begin
transferring data to the USB drive.
Note Do not remove the USB drive from the instrument while the data
is downloading. ▲
6. When the data download is complete, the instrument will display a
“Success!” message and display the file name as it is stored on the USB
flash drive. (The file name format is the instrument serial number,
name of download, followed by a date/time stamp.) Remove the USB
flash drive and select the OK button to continue.
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42iQ Low Source Instruction Manual
Thermo Scientific
Operation
Settings
Change USB Password
The Change USB Password screen allows the user to set a new password for
accessing USB.
Home Screen>Settings>USB Drive>Change USB Password
Home Screen>Settings>Security Access Levels>Change Standard Access
Password>Continue
Thermo Scientific
42iQ Low Source Instruction Manual
3-133
Operation
Settings
The Change USB Password screens contain the following information:
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42iQ Low Source Instruction Manual
●
Enter Current USB Password: User enters current USB password.
●
Continue: Proceeds to next screen.
●
Enter New USB Password: User enters new USB password.
●
Confirm New Security Access Password: User confirms new security
password for spelling confirmation.
●
Commit New USB Password Change: Commits new USB password.
●
Cancel and Return to the Home Screen: Exits screen and returns to the
Home Screen without changing password.
Thermo Scientific
Operation
Settings
User Contact
Information
The User Contact Information screen allows the user to enter their contact
information. This is useful when contacting technical support through
emails found at the screen Health Check>File Sharing and Support.
Home Screen>Settings>User Contact Information
The User Contact Information screen contains the following information:
Thermo Scientific
●
Business Name
●
User Name
●
Alternate User Name
●
User ID
●
Business Address
●
Business Shipping Address
●
To: User Email Address
●
CC: User Email Address 110
●
User Phone Number
●
Alternate User Phone Number
●
Shelter / Lab Phone Number
42iQ Low Source Instruction Manual
3-135
Operation
Settings
Update Bootloader
The Update Bootloader screen allows the user to update bootloader and
reboot the instrument. If the button is blue, an update to the bootloader is
available. If button is greyed out, no update is needed.
Home Screen>Settings>Update Bootloader
The Update Bootloader screen contains the following information:
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42iQ Low Source Instruction Manual
●
Reboot and Update: Update bootloader and reboot instrument.
●
Exit: Exits screen.
Thermo Scientific
Chapter 4
Calibration
This chapter describes the procedures for performing a standard zero/span
calibration.
The 42iQLS requires initial and periodic calibration according to the
procedures described in this chapter. A quality control plan that allows the
frequency and number of calibration points to be modified depending on
calibration and zero/span check data should be implemented. Such a
quality control program is essential to ascertain the accuracy and reliability
of the air quality data collected. The data compiled for such a program
might include items such as dates of calibration, atmospheric conditions,
control settings and other pertinent data. For more detailed quality
assurance guidelines, see the Quality Assurance Handbook for Air Pollution
Measurement Systems, published by the U.S. EPA, Research Triangle Park,
NC, 27711.
There are a number of conditions which should be met prior to a
calibration or a zero/span check. First, the instrument should have at least
90 minutes to warm up and stabilize. Second, the range used during the
calibration or zero/span check should be the same as that used during
normal monitoring. Third, all operational adjustments to the instrument
should be completed prior to calibration. Fourth, all parts of the gas flow
system, such as sample lines, and particulate filters, which are used in
normal monitoring, should also be used during calibration. Finally, it is
recommended that the recording devices and outputs used during normal
monitoring be calibrated prior to the instrument calibration and that they
be used during the calibration or the zero/span check.
The following describes procedures for performing a multipoint calibration
of the 42iQLS. The information described here is considered adequate to
perform the calibration. However, if greater detail is desired, the user is
referred to the Code of Federal Regulations, Title 40, Part 50, Appendix F.
The calibration technique is based on the rapid gas phase reaction between
NO and O3 which produces stoichiometric quantities of NO2 in
accordance with the reaction:
Thermo Scientific
42iQ Low Source Instruction Manual 4-1
Calibration
Equipment Required
NO + O 3 NO2 + O2
The quantitative nature of this reaction is such that when the NO
concentration is known, the concentration of NO2 can be determined.
Ozone is added to excess NO in a dynamic calibration system, and the NO
channel of the chemiluminescence NO-NO2-NOx analyzer is used as an
indicator of changes in NO concentration.
When O3 is added, the decrease in NO concentration observed on the
calibrated NO channel is equivalent to the concentration of NO2
produced. Adding variable amounts of O3 from a stable O3 generator can
change the amount of NO2 generated.
Equipment Required
Zero Gas Generator
Compression
Drying
Oxidation
The following equipment is required to calibrate the analyzer:
●
Zero gas generator
●
Gas phase titrator
A zero air source, such as a Thermo Scientific 111iQ Zero Air Supply, free
of contaminants such as NO, NO2, and O3 is required for dilution,
calibration, and gas phase titration.
The zero air source should be at an elevated pressure to allow accurate and
reproducible flow control and to aid in subsequent operations such as
drying, oxidation, and scrubbing. An air compressor that gives an output of
10 psig is usually sufficient for most applications.
Several drying methods are available. Passing the compressed air through a
bed of silica gel, using a heatless air dryer, or removing water vapor with a
permeation dryer, are three possible approaches.
NO is usually oxidized to NO2 in order to ease its scrubbing. Oxidation
can be accomplished by either ozonation or chemical contact. During
ozonation, the air is passed through an ozone generator. The O3 that is
produced reacts with the NO to form NO2. Care must be taken to allow
sufficient residence time for the ozonation reaction to go to completion.
Chemical oxidation is accomplished by passing the air stream through a
reacting bed. Such agents as CrO3 on an alumina support or Purafil® are
very efficient at oxidizing NO to NO2. The chemical contact approach has
the advantage of needing no electrical power input for its application.
4-2
42iQ Low Source Instruction Manual
Thermo Scientific
Calibration
Equipment Required
Scrubbing
Fixed bed reactors are commonly used in the last step of zero air generation
to remove the remaining contaminants by either further reaction or
absorption. Table 4–1 lists materials that can be effective in removing
contaminants.
Table 4–1. Scrubbing Materials
Gas Phase Titrator
To Remove
Use
NO
Soda-Lime (6-12 mesh), Purafil
Hydrocarbons
Molecular Sieve (4A), Activated Charcoal
O3 and NO2
Activated Charcoal
A gas phase titrator (GPT), such as is included in the Thermo Scientific
146iQ Multi-gas Calibrator, is used to generate NO2 concentrations from
NO concentrations. Figure 4–1 shows the suggested placement of the
component parts of a gas phase titration apparatus.
Equipment Damage All connections between components in the system
should be made with glass, PTFE, or other non-reactive material. ▲
Flow Controllers
Pressure Regulator
Thermo Scientific
The airflow controllers should be devices capable of maintaining constant
airflows within 2% of the required flow rate. The NO flow controller
should be capable of maintaining constant NO flows within 2% of the
required flow rate.
The pressure regulator for the standard NO cylinder must have a nonreactive diaphragm and internal parts, and a suitable delivery pressure.
42iQ Low Source Instruction Manual
4-3
Calibration
Equipment Required
Figure 4–1. GPT System
Ozone Generator
The ozone generator must be capable of generating sufficient and stable
levels of ozone for reaction with NO to generate NO2 concentrations in the
range required.
Note Ozone generators of the electric discharge type may produce NO and
NO2 and are not recommended. ▲
Diverter Valve
Reaction Chamber
Mixing Chamber
4-4
42iQ Low Source Instruction Manual
A valve can be used to divert the NO flow when zero air is required at the
manifold.
The reaction chamber used for the reaction of ozone with excess NO
should have sufficient volume so that the residence time meets the
requirements specified in this chapter.
The mixing chamber is used to provide thorough mixing of the reaction
products and diluent air.
Thermo Scientific
Calibration
Equipment Required
Output Manifold
Reagents
NO Concentration Standard
The output manifold should be of sufficient diameter to insure an
insignificant pressure drop at the analyzer connection. The system must
have a vent designed to insure atmospheric pressure at the manifold and to
prevent ambient air from entering the manifold.
The following information describes the NO concentration standard and
the method for calculating the NO concentration standard and the NO2
impurity.
A cylinder containing 10 to 50 ppm NO in N2 with less than 1 ppm NO2
is usually used as the concentration standard. The cylinder must be
traceable to a National Institute of Standards and Technology (NIST) NO
in N2 Standard Reference Material or NO2 Standard Reference Material.
Procedures for certifying the NO cylinder (working standard) against an
NIST traceable NO or NO2 standard and for determining the amount of
NO2 impurity are given in EPA Publication No. EPA-600/4-75-003,
“Technical Assistance Document for the Chemiluminescence Measurement
of Nitrogen Dioxide.”
In addition, the procedure for the certification of a NO working standard
against an NIST traceable NO standard and determination of the amount
of NO2 impurity in the working standard is reproduced here. The cylinder
should be re-certified on a regular basis as determined by the local quality
control program.
Use the NIST traceable NO standard and the GPT calibration procedure
to calibrate the NO, NO2, and NOx responses of the instrument. Also
determine the converter efficiency of the analyzer. Refer to the calibration
procedure in this manual and in the Code of Federal Regulations, Title 40,
Part 50, Appendix F for exact details. Ignore the recommended zero offset
adjustments.
Assaying a Working NO Standard
Against a NIST-traceable NO
Standard
Use the following procedure to calculate the NO concentration standard
and NO2 impurity.
1. Generate several NO concentrations by dilution of the NO working
standard.
2. Use the nominal NO concentration, [NO]NOM, to calculate the diluted
concentrations.
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Calibration
Equipment Required
3. Plot the analyzer NO response (in ppm) versus the nominal diluted
NO concentration and determine the slope, SNOM.
4. Calculate the [NO] concentration of the working standard, [NO]STD,
from:
[NO ]STD = [NO ] NOM x S NOM
5. If the nominal NO concentration of the working standard is unknown,
generate several NO concentrations to give on-scale NO responses.
6. Measure and record FNO and FT for each NO concentration generated.
7. Plot the analyzer NO response versus FNO/FT and determine the slope
which gives [NO]STD directly. The analyzer NOx responses to the
generated NO concentrations reflect any NO2 impurity in the NO
working standard.
8. Plot the difference between the analyzer NOx and NO responses versus
FNO/FT. The slope of this plot is [NO2]IMP.
Zero Air
Dynamic Parameter
Specifications for
Gas Titrator
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42iQ Low Source Instruction Manual
A source of zero air free of contaminants should be used as described earlier
in this chapter. Contaminants can cause a detectable response on the
instrument and may also react with the NO, O3, or NO2 during the gas
phase titration.
Use the following definitions for the remainder of this chapter.
PR =
Dynamic parameter specification to ensure complete reaction of the
available O3, ppm-min
[NO]RC =
NO concentration in the reaction chamber, ppm
tR =
residence time of the reactant gases in the reaction chamber, min
[NO]STD =
Concentration of the undiluted NO standard, ppm
FNO =
NO flow rate, sccm
FO =
O3 generator air flow rate, sccm
VRC =
Volume of the reaction chamber, cc
FT =
Analyzer demand plus 10 to 50% excess
Thermo Scientific
Calibration
Equipment Required
The O3 generator (ozonator) airflow rate and the NO flow rate must be
adjusted such that the following relationships hold:
PR = [NO ]RC x t R 2.75 ppm - min
[NO ]RC = [NO ]STD
tR =
Determining GPT System
Flow Conditions
F NO
( FO + F NO )
V RC
< 2 min
FO + F NO
Use the following procedure to determine the flow conditions to be used in
the GPT system.
1. Determine FT, the total flow required at the output manifold, which
should be equal to the analyzer demand plus 10 to 50 percent excess.
2. Establish [NO]OUT as the highest NO concentration that will be
required at the output manifold. [NO]OUT should be about equal to
90% of the upper range limit (URL) of the NO2 concentration range to
be covered.
3. Determine FNO as:
FNO =
[NO ] OUT x FT
[NO ] STD
4. Select a convenient or available reaction chamber volume. Initially a
trial volume may be selected in the range of 200 to 500 cc.
5. Compute FO as:
FO =
[NO ] STD x FNO x VRC
- FNO
2.75
6. Compute tR as:
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Calibration
Pre-Calibration
tR =
V RC
FO + FNO
7. Verify that tR < 2 minutes. If not, select a reaction chamber with a
smaller VRC.
8. Compute the diluent air flow rate as:
FD = FT - FO - FNO
9. If FO turns out to be impractical for the desired system, select a reaction
chamber having a different VRC and recompute FD and FO.
Pre-Calibration
Perform the following pre-calibration procedure before calibrating the
42iQLS. For detailed information about the menu parameters and the
icons used in these procedures, see the “Operation” chapter.
Note The calibration and calibration check duration times should be long
enough to account for the transition (purge) process when switching from
sample to zero and from zero to span. This transition time is the time
required to purge the existing air. ▲
Note Depending on the plumbing configuration and the instrument, data
from approximately the first minute of a zero calibration or check should
be disregarded because of residual sample air. Also, data from
approximately the first minute of a span calibration or check should be
disregarded because the span is mixing with the residual zero air. ▲
1. Allow the instrument to warm up and stabilize.
2. Be sure the ozonator is enabled. If the ozonator is disabled:
a. From the Home screen choose Settings>Instrument Settings.
b. Press Ozonator Supply to toggle the ozonator to show Enabled.
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Calibration
Calibration
3. Be sure the instrument is in the auto mode, that is, NO, NO2, and
NOx measurements are being displayed on the front panel display. If
the instrument is not in auto mode:
a. From the Home screen choose Settings>Measurement
Settings>Advanced Measurement Settings>Auto/Manual Mode.
b. Select NO/NOx.
4. Check the averaging time. It is recommended that a higher averaging
time be used for best results.
a. From the Home screen choose Settings>Measurement
Settings>Averaging time. (Ensure Dynamic Filtering is disabled to
access Averaging Time.)
Note The averaging time should be less than the zero duration and less
than the span duration. ▲
5. Verify that any filters used during normal monitoring are also used
during calibration.
Calibration
The following procedure calibrates the analyzer using the gas phase titrator
and zero in gas generator described previously in this manual. It is
suggested that a calibration curve have at least seven points between the
zero and full scale NO concentrations. Although the seven-point curve is
optional, two of whatever number of points is chosen should be located at
the zero and 90% levels and the remaining points equally spaced between
these values.
Note When the instrument is equipped with internal zero/span and sample
valves, the ZERO IN and SPAN ports should give identical responses to
the SAMPLE port when test gases are introduced. The user should calibrate
the instrument using the SAMPLE port to introduce the zero and span gas
sources. ▲
After calibration, the zero in and span sources should be plumbed to the
appropriate ports on the rear panel of the instrument, and then
reintroduced to the instrument. The instrument should give identical
responses to the test gases whether they are introduced via the SAMPLE
port or the ZERO IN or SPAN ports. If not, the plumbing and/or valves
should be serviced.
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Calibration
Calibration
Connect GPT Apparatus
to the Analyzer
Use the following procedure to connect the GPT apparatus to the analyzer.
1. Assemble a dynamic calibration system such as the one shown in Figure
4–1.
2. Ensure that all flow meters are calibrated under the conditions of use
against a reliable standard, such as a soap-bubble meter or wet-test
meter. All volumetric flow rates should be corrected to 25 °C and 760
mmHg.
3. Precautions should be taken to remove O2 and other contaminants
from the NO pressure regulator and delivery system prior to the start of
calibration to avoid any conversion of NO to NO2. Failure to do so can
cause significant errors in calibration. This problem can be minimized
by:
a. Carefully evacuating the regulator after the regulator has been
connected to the cylinder and before opening the cylinder valve.
b. Thoroughly flushing the regulator and delivery system with NO
after opening the cylinder valve.
c. Not removing the regulator from the cylinder between calibrations
unless absolutely necessary.
4. Connect the analyzer sample bulkhead input to the output of the GPT
system.
Adjust Instrument Gain
Use the following procedure to adjust the instrument gain. This includes:
●
Setting the NO and NOx background to zero
●
Calibrating the NO channel to the NO calibration gas
●
Calibrating the NOx channel to the NOx calibration gas
Set NO and NOx Backgrounds The NO and NOx background corrections are determined during zero
to Zero calibration. The background signal is the combination of electrical offsets,
PMT dark current, and trace substances undergoing chemiluminescence.
For more detailed information, see “Calibrate NO and NOx Background”
in the “Operation” chapter.
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Calibration
Calibration
Use the following procedure to set the NO and NOx backgrounds to zero.
Both the NO and NOx background screens operate the same way.
Note The NO channel should be calibrated first and then calibrate the
NOx channel. ▲
For detailed information about the menu parameters and the icons used in
these procedures, see the “Operation” chapter.
1. Determine the GPT flow conditions required to meet the dynamic
parameter specifications as indicated in “Dynamic Parameter
Specifications for Gas Titrator” earlier in this chapter.
2. Adjust the GPT diluent air and O3 generator air flows to obtain the
flows determined in “Dynamic Parameter Specifications for Gas
Titrator” earlier in this chapter. The total GPT airflow must exceed the
total demand of the analyzer. The 42iQLS requires approximately 100
cc/min of sample flow, and a total GPT airflow of at least 0.5 liters/min
is recommended.
a. Allow the analyzer to sample zero air until the NO, NOx, and NO2
responses stabilize.
b. After the responses have stabilized, from the Home Screen, choose
Calibration>Calibrate Backgrounds>Calibrate NO Background.
The Target NO Concentration button will read 0.000. The
Calculated NO Background button will display the background
needed to make the current NO concentration go to 0.000.
c. Press Calibrate to set the NO reading to zero and save the new
background.
d. Press the Back button to return to the Calibration Backgrounds
screen and repeat this procedure to set the Calibrate NOx
Background to zero.
e. Record the stable zero air responses as ZNO, ZNOX, and ZNO2.
3. Adjust the NO flow from the standard NO cylinder to generate a NO
concentration of about 80% of the upper range limit (URL) of the NO
range. The exact NO concentration is calculated from:
Where:
Thermo Scientific
x
[NO ] OUT = FNO NOSTD
FNO + FO + FD
42iQ Low Source Instruction Manual
4-11
Calibration
Calibration
[NO]OUT = Diluted NO concentration at the output manifold, ppm
NOSTD = No feed concentration
FNO = No flow
FO = Ozone flow
FD = Dilution flow
Calibrate the NO Channel to the
NO Calibration Gas
Use the following procedure to calibrate the NO channel to the NO
calibration gas.
1. Allow the analyzer to sample the NO calibration gas until the NO,
NO2, and NOx readings have stabilized.
2. When the responses stabilize, from the Home Screen, choose
Calibration>Calibrate Span Coefficients>Calibrate NO Span
Coefficient.
The user sets the span concentration by pressing the Edit NO Span
Concentration button. The Calculated NO Span Coefficient button
will show what the span coefficient will be set to if the Calibrate button
is pressed. Pressing the Calibrate button will save the new NO span
coefficient and calibrate the instrument.
3. Enter the NO calibration gas concentration using the pushbuttons, and
then press Calibrate to calibrate the instrument to the NO calibration
gas.
4. Record the [NO]OUT concentration and the instrument’s response.
Calibrate the NOx Channel to the Use the following procedure to calibrate the NOx channel to the NOx
NOx Calibration Gas calibration gas.
1. Press the Back button to return to the Calibration menu, and choose
Calibrate NOx Span Coefficient.
2. Verify that the NOx calibration gas concentration is the same as the
NO calibration gas concentration plus any known NO2 impurity.
The user sets the span concentration by pressing the Edit NOx Span
Concentration button. The Calculated NOx Span Coefficient button
will show what the span coefficient will be set to if the Calibrate button
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Calibration
Calibration
is pressed. Pressing the Calibrate button will save the new NOx span
coefficient and calibrate the instrument.
3. Enter the NOx calibration gas concentration using the pushbuttons,
and then press Calibrate to calibrate the instrument to the NOx
calibration gas.
The exact NOx concentration is calculated from:
[ NO x ]OUT =
Where:
FNO x ([NO ] STD + [ NO 2 ]IMP )
FNO + FO + FD
[NOx] OUT = diluted NOx concentration at the output manifold, ppm
[NO2] IMP = concentration of NO2 impurity in the standard NO cylinder, ppm
4. Record the NOx concentration and the analyzer's NOx response.
Preparing NO, NOx, and
NO2 Calibration Curves
Use the following procedures to prepare the NO, NOx, and NO2
calibration curves.
1. Generate several additional NO and NOx concentrations by decreasing
FNO or increasing FD.
2. For each concentration generated, calculate the exact NO and NOx
concentrations using the above equations for [NO]OUT and [NOx]OUT.
3. Record the NO and NOx responses.
4. Plot the analyzer responses versus the respective calculated NO and
NOx concentrations and draw or calculate the respective calibration
curves. For subsequent calibrations where linearity can be assumed,
these curves may be checked with a three-point calibration consisting of
a zero point, NO and NOx concentrations of approximately 80% of the
URL, and an intermediate concentration.
5. Adjust the GPT system to generate a NO concentration near 90% of
the URL of the instrument range selected.
6. Sample this NO concentration until the NO and NOx responses have
stabilized, then measure and record the NO concentration as [NO]ORIG.
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Calibration
Calibration
7. Adjust the O3 generator in the GPT system to generate sufficient O3 to
produce a decrease in the NO concentration equivalent to about 80%
of the URL of the NO2 range. The decrease must not exceed 90% of
the NO concentration determined in Steps 5 and 6 above.
8. When the analyzer responses stabilize, record the resultant NO
concentrations as [NO]REM.
9. Press the Back button to return to the Calibration menu, and choose
Calibrate NO2 Span Coefficient.
The user sets the span concentration by pressing the Edit NO2 Span
Concentration button. The Calculated NO2 Span Coefficient button
will show what the span coefficient will be set to if the Calibrate button
is pressed. Pressing the Calibrate button will save the new NO2 span
coefficient and calibrate the instrument.
10. Enter the NO2 calibration gas concentration using the pushbuttons,
and then press Calibrate to concentration to reflect the sum of the
following: the NO2 concentration generated by GPT, ([NO]ORIG [NO]REM), and any NO2 impurity.
The exact NOx concentration is calculated from:
[ NO 2 ]OUT = ([NO ]ORIG - [NO ]REM ) +
F NO x [ NO 2 ]IMP
F NO + FO + FD
Where:
[NO2]OUT = diluted NO2 concentration at the output manifold, ppm
[NO]ORIG = original NO concentration, prior to addition of O3, ppm
[NO]REM = NO concentration remaining after addition of O3, ppm
The analyzer does a one point NO2 span coefficient calculation,
corrects the NO2 reading for converter inefficiency, and then adds the
corrected NO2 to the NO signal to give a corrected NOx signal.
If the analyzer calculates a NO2 span coefficient of less than 0.96, either
the entered NO2 concentration is incorrect, the converter is not being
heated to the proper temperature, the instrument needs servicing (leak
or imbalance), or the converter needs replacement or servicing. The
NO2 analog output will reflect the NO2 concentration generated by
GPT, any NO2 impurity, and the NO2 zero offset.
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Calibration
Calibration
11. Record the NO2 concentration and the analyzer's NO2 response.
12. Maintaining the same FNO, FO, and FD, adjust the ozone generator to
obtain several other concentrations of NO2 over the NO2 range (at least
five evenly spaced points across the remaining scale are suggested).
13. Record the stable responses and plot the analyzer's NO2 responses
versus the corresponding calculated (using the above equation for
[NO2]OUT) concentrations and draw or calculate the NO2 calibration
curve.
Note It is important that the curve be linear within 1% FS over the NO2
range. If the curve is nonlinear, the analyzer is not operating correctly,
(possible leak, or converter failure, etc.), and should be serviced. Assuming
the curve is linear, subsequent data should be reduced using this NO2
calibration curve response. ▲
Note The user can also manually change the calibration factors. This is
often useful in a troubleshooting situation. From the Home screen, choose
Calibration>Advanced Calibration>Manual Calibration>Adjust Span
Coefficients.
However, after the above calibration procedure is completed, all subsequent
data reduction depends on the calibration parameters remaining the same
as during the initial calibration. Therefore, never change any calibration
factor without first recording the value so that after any troubleshooting
procedure is completed, the initial value can be re-entered thereby not
altering the multipoint calibration. ▲
Alternative Calibration
Procedure Using NO2
Permeation Tube
Thermo Scientific
Although it is recommended that a GPT system be used to calibrate the
analyzer, the procedure described in the Code of Federal Regulations, Title
40, Part 50, Appendix F using a NO2 permeation tube may be used as an
alternative procedure for calibrating the instrument.
42iQ Low Source Instruction Manual
4-15
Calibration
Calibration in Dual Range and Auto Range Mode
Calibration in Dual
Range and Auto
Range Mode
The dual/auto range calibration feature is used to calibrate the analyzer at
two different span levels (as opposed to a single span level in the standard
mode) generating a “tailored multi-point” calibration curve stored in the
analyzer's memory. This feature may be used:
●
When widely different gas levels are being monitored, such as a factor
of 10 or greater apart
●
If precision and span levels are being introduced using separate tanks
●
If more than one multi-component cylinder is being used to calibrate
the instrument
Properly designed chemiluminescence analyzers are inherently linear over a
wide dynamic range; and under normal U.S. EPA compliance situations
this feature is not required. Dual calibration may be used for span levels less
than a factor of 10 apart, however if this is done to correct for a significant
non-linearity, it may mask the problems causing the effect, such as, bad
calibration cylinder, leaks in sampling lines, or low ozonator output.
Set NO and NOx
Background to Zero
Use the following procedure to set the NO and NOx backgrounds to zero.
Both the NO and NOx background screens operate the same way.
For detailed information about the menu parameters and the icons used in
these procedures, see the “Operation” chapter.
1. Follow the “Pre-Calibration” procedure described previously in this
chapter.
2. Be sure the instrument is in the auto or dual mode. If the instrument is
not in auto or dual mode:
a. From the Home screen choose Settings>Measurement
Settings>Range Mode Selection.
b. Select Auto or Dual mode.
3. Introduce zero air to the SAMPLE bulkhead and allow the analyzer to
sample zero air until the NO, NO2, and NOx responses stabilize.
4. After the responses have stabilized, from the Home Screen, choose
Calibration>Calibrate Backgrounds>Calibrate NO Background.
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Calibration
Calibration in Dual Range and Auto Range Mode
The Target Concentration button will read 0.00. The New
Background button will display the background needed to make the
current NO concentration go to 0.00.
5. In the Calibrate Backgrounds screen, press Calibrate to set the NO
reading to zero and to save the new background.
6. Press the Back button to return to the Calibration Backgrounds screen
and repeat this procedure to set the Calibrate NOx Background to
zero.
Calibrate NO Low
Use the following procedure to calibrate NO channel to the NO
calibration gas.
1. Disconnect the source of zero air from the SAMPLE bulkhead. In its
place, connect a source of NO calibration gas of about 80% of the low
NO full-scale range.
2. Allow the analyzer to sample the low NO calibration gas until the NO,
NO2, and NOx readings stabilize.
3. When the responses stabilize, from the Home screen, choose
Calibration>Calibrate Span Coefficients>Calibrate Low Range NO
Span Coefficient.
The user sets the span concentration by pressing the Edit Span
Concentration button. The New Span Coefficient button will show
what the span coefficient will be set to if the Calibrate button is
pressed.
4. Enter the NO calibration gas concentration using the pushbuttons, and
then press Calibrate to calculate and save the new low range NO span
coefficient based on the entered span coefficient.
Calibrate NOx Low
Use the following procedure to calibrate the NOx channel to the NOx
calibration gas.
1. Press the Back button to return to the Calibration menu and choose
Calibrate Low Range NOx Span Coefficient.
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4-17
Calibration
Calibration in Dual Range and Auto Range Mode
The user sets the span concentration by pressing the Edit Span
Concentration button. The New Span Coefficient button will show
what the span coefficient will be set to if the Calibrate button is
pressed.
2. Verify that the low NOx calibration gas concentration is the same as the
low NO calibration gas concentration plus any known NO2 impurity.
3. Enter the NOx calibration gas concentration using the pushbuttons,
and then press Calibrate to calculate and save the new low range NOx
span coefficient based on the entered span coefficient.
Calibrate NO2 Low
Use the following procedure to calibrate the NO2 channel to the NO2
calibration gas.
1. Adjust the O3 generator in the GPT system to generate sufficient O3 to
produce a decrease in the low NO concentration equivalent to about
80% of the URL of the low NO2 range. The decrease must not exceed
90% of the low NO concentration determined in the “Calibrate NOx
Low” procedure.
2. Press the Back button to return to the Calibration menu and choose
Calibrate Low Range NO2 Span Coefficient.
The user sets the span concentration by pressing the Edit Span
Concentration button. The New NO2 Span Coefficient button will
show what the span coefficient will be set to if the Calibrate button is
pressed.
3. Set the low NO2 calibration gas concentration to reflect the sum of the
NO2 concentration generated by GPT and any NO2 impurity using the
pushbuttons, and then press Calibrate to calculate and save the new
low range NO2 span coefficient based on the entered span coefficient.
Calibrate NO High
Use the following procedure to calibrate the NO channel to the NO
calibration gas.
1. Connect a source of high NO calibration gas of about 80% of the high
NO full-scale range. Allow the analyzer to sample the high NO
calibration gas until the NO, NO2, and NOx readings have stabilized.
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Calibration
Calibration in Dual Range and Auto Range Mode
2. After the responses stabilize, from the Home screen, choose
Calibration>Calibrate Span Coefficients>Calibrate High Range NO
Span Coefficient.
The user sets the span concentration by pressing the Edit Span
Concentration button. The New Span Coefficient button will show
what the span coefficient will be set to if the Calibrate button is
pressed.
3. Enter the NO calibration gas concentration using the pushbuttons, and
then press Calibrate to calculate and save the new high range NO span
coefficient based on the entered span coefficient.
Calibrate NOx High
Use the following procedure to calibrate the NOx channel to the NOx
calibration gas.
1. Press the Back button to return to the Calibration menu and choose
Calibrate High Range NOx Span Coefficient.
The user sets the span concentration by pressing the Edit Span
Concentration button. The New Span Coefficient button will show
what the span coefficient will be set to if the Calibrate button is
pressed.
2. Verify that the high NOx calibration gas concentration is the same as
the low NO calibration gas concentration plus any known NO2
impurity.
3. Enter the NOx calibration gas concentration using the pushbuttons,
and then press Calibrate to calculate and save the new high range NOx
span coefficient based on the entered span coefficient.
Calibrate NO2 High
Use the following procedure to calibrate the NO2 channel to the NO2
calibration gas.
1. Adjust the O3 generator in the GPT system to generate sufficient O3 to
produce a decrease in the high NO concentration equivalent to about
80% of the URL of the high NO2 range. The decrease must not exceed
90% of the high NO concentration determined in the “Calibrate NOx
High” procedure.
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4-19
Calibration
Zero and Span Check
2. Press the Back button to return to the Calibration menu and choose
Calibrate High Range NO2 Span Coefficient.
The user sets the span concentration by pressing the Edit Span
Concentration button. The New NO2 Span Coefficient button will
show what the span coefficient will be set to if the Calibrate button is
pressed.
3. Set the high NO2 calibration gas concentration to reflect the sum of the
NO2 concentration generated by GPT and any NO2 impurity using the
pushbuttons, and then press Calibrate to calculate and save the new
high range NO2 span coefficient based on the entered span coefficient.
Zero and Span
Check
The analyzer requires initial and periodic calibration according to the
procedures outlined in this manual. Initially, the frequency of the
calibration procedure should be determined by the stability of the zero and
span checks, which may be run daily. You should generate a new
calibration curve when zero and span checks indicate a shift in instrument
gain of more than 10 percent from that determined during the most recent
multipoint calibration. You can adjust the frequency of calibration and
even zero and span checks appropriately as you gain confidence with the
instrument.
It is recommended to have a quality control plan where the frequency and
the number of points required for calibration can be modified on the basis
of calibration and zero and span check data collected over a period of time.
Note however, that the EPA requires a minimum of one multipoint
calibration per calendar quarter. Such a quality control program is essential
to ascertain the accuracy and reliability of the air quality data collected and
to alert the user if the accuracy or reliability of the data should become
unacceptable. A compilation of this kind might include items such as dates
of calibration, atmospheric conditions, calibration factors, and other
pertinent data.
Use the following procedure to perform a zero and span check.
1. Connect the zero gas to the SAMPLE bulkhead in a standard
instrument or to the ZERO IN bulkhead in a 42iQLS equipped with
the zero/span and sample solenoid valve option.
2. Allow the instrument to sample zero gas until a stable reading is
obtained on the NO, NO2, and NOx channels then record the zero
readings. Unless the zero has changed by more than ±0.010 ppm, it is
recommended that the zero not be adjusted. If an adjustment larger
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Calibration
Manual Calibration
than this is indicated due to a change in zero reading, a new multipoint
calibration curve should be generated.
3. Attach a supply of known concentration of NO and NO2 (usually
generated via an NIST traceable NO working standard and a GPT
system) to the SAMPLE bulkhead (or SPAN bulkhead for instruments
equipped with the zero/span and sample solenoid valve option) on the
rear panel.
4. Allow the instrument to sample the calibration gas until a stable
reading is obtained on the NO, NO2, and NOx channels. If the
calibration has changed by more than 10%, a new multipoint
calibration curve should be generated.
5. When the calibration check has been completed, record the NO, NO2,
and NOx values.
6. Reconnect the analyzer sample line to the SAMPLE bulkhead.
Manual
Calibration
The Manual Calibration screen allows the user to view and manually adjust
the zero background and span coefficient. These are used to correct the
NO, NO2, and NOx readings that the instrument generates using its own
internal calibration data.
Normally, the zero background and span coefficient are calculated
automatically at the Calibrate Background and Calibrate Span Coefficient
described earlier in the chapter. However, the calibration factors can also be
set manually using the functions as described below.
The following screen is shown in single range mode. In dual or auto range
modes, “High Range” or “Low Range” buttons are displayed to indicate the
calibration of the high or low coefficient. The Adjust High Range Span
Coefficient and Adjust Low Range Span Coefficient screens function the
same way.
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4-21
Calibration
Manual Calibration
Home Screen>Calibration>Advanced Calibration>Manual Calibration
Adjust NO and NOx
Backgrounds
The NO background is the amount of signal read by the analyzer in the
NO channel while sampling zero air. The NOx background is the amount
of signal read by the analyzer in the NOx channel while sampling zero air.
The Adjust Background screens are used to perform a manual zero
background calibration of the instrument. As such, the instrument should
sample zero air until stable readings are obtained. The NO channel should
be calibrated first. Both the NO and NOx Adjust Background screens
operate the same way.
The button labeled Adjust NO Background allows the user to change zero
background. The second button called Adjusted NO Concentration shows
what the new NO concentration would be based on the changed zero
background. Press the Calibrate button to save the adjusted zero
background value.
Home Screen>Calibration>Advanced Calibration>Manual
Calibration>Adjust Backgrounds>Adjust NO Background
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Calibration
Manual Calibration
Adjust Span
Coefficient
The span coefficients are used to correct the NO, NO2, and NOx readings.
The NO and NOx span coefficient normally has a value near 1.000. The
NO2 span coefficient normally has a value between 0.95 and 1.050.
The user can manually change the span coefficient by entering a value in
the Adjust Span Coefficient button. The second button called Adjusted
Concentration shows what the new concentration would be based on the
adjusted span coefficient. Press the Calibrate button to save the adjusted
span coefficient value. The NO, NO2, and NOx coefficient screens operate
the same way.
Home Screen>Calibration>Advanced Calibration>Manual
Calibration>Adjust Span Coefficients>Adjust NO Span Coefficient
(single range mode)
Home Screen> Calibration>Advanced Calibration>Manual
Calibration>Adjust Coefficients> Adjust High Range NO Span
Coefficient (dual or auto range mode)
Reset Bkg to 0.000
and Span Coef to
1.000
Thermo Scientific
The Reset Bkg to 0.000 and Span Coef to 1.000 screen allows the user to
reset the calibration configuration values to factory defaults.
42iQ Low Source Instruction Manual
4-23
Calibration
Zero/Span Schedule
Zero/Span
Schedule
The Zero/Span Schedule screen is available only if the zero/span valve
option is installed and turned on (toggles enabled or disabled) at the screen
Settings>Configuration. It is used to program the instrument to perform
fully automated zero and span calibration or calibration checks.
Home Screen>Calibration>Zero/Span Schedule
Home Screen>Calibration>Zero/Span Schedule>More
Next Time
Period
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42iQ Low Source Instruction Manual
The Next Time button is used to view and set the initial date and time (24hour format) of the zero/span schedule. Once the zero/span schedule
begins, the date and time of the next zero/span schedule is calculated and
displayed.
The Period button defines the period or interval between zero/span
schedule. Periods between 0 and 999 hours are acceptable. To turn the
zero/span schedule off, set the period to 0.
Thermo Scientific
Calibration
Zero/Span Schedule
Zero/Span/Purge
Duration Minutes
The Zero Duration button defines how long zero air is sampled by the
instrument. The Span and Purge Duration buttons look and function the
same way as the zero duration button. The span duration button is used to
set how long the span gas is sampled by the instrument. The purge
duration button is used to set how long the purge period will be after doing
a zero and/or span. This gives the instrument time to flush out the zero and
span gas before any meaningful sample data is taken. Logged data is flagged
as taken during a purge to show that the data is suspect. Durations between
0 and 99 minutes are acceptable. Each time a zero/span schedule occurs the
zero is done first, followed by the span. To perform just a zero, set the span
duration to 0 (off). The same applies to perform just a span.
Schedule Averaging
Time
The Schedule Averaging Time button allows the user to adjust the schedule
averaging time. The schedule averaging time is used by the analyzer only
when performing a zero/span schedule. The analyzer’s averaging time is
used for all other functions. Range is 1300 seconds.
Background
Calibration and
Span Calibration
Zero/Span Ratio
Thermo Scientific
Background Calibration and Span Calibration are toggle buttons that
change between enabled or disabled.
If the background calibration is set to enabled, then a zero adjustment is
made. If the span calibration is set to enabled, then a span adjustment is
made. (This is how to set up a scheduled, recurring auto calibration.)
The Zero/Span Ratio button is used to set the ratio of zero checks or
adjustments to span checks or adjustments. For example, if this value is set
to 1, a span duration will follow every zero duration. If this value is set to 3,
there will be two zero checks between each span check. This value may be
set from 1 to 99, with 1 as default.
42iQ Low Source Instruction Manual
4-25
Chapter 5
Maintenance
This chapter describes the periodic maintenance procedures that should be
performed on the instrument to ensure proper operation. Since usage and
environmental conditions vary greatly, you should inspect the components
frequently until an appropriate maintenance schedule is determined.
Safety
Precautions
Read the safety precautions before beginning any procedures in this
chapter.
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly grounded antistatic wrist strap
must be worn while handling any internal component. For more
information about appropriate safety precautions, see the “Servicing”
chapter. ▲
Fan Filter Inspection
and Cleaning
Use the following procedure to inspect and clean the fan filter.
1. Remove the fan guard from the fan and remove the filter. Refer to
Filter Replacement on page 7-6.
2. Flush the filter with warm water and let dry (a clean, oil-free purge will
help the drying process) or blow the filter clean with compressed air.
3. Re-install the filter and fan guard.
Thermo Scientific
42iQ Low Source Instruction Manual 5-1
Maintenance
Thermoelectric Cooler Fins Inspection and Cleaning
Thermoelectric Cooler
Fins Inspection and
Cleaning
Use the following procedure to inspect and clean the thermoelectric cooler
fins.
1. Turn the instrument OFF and unplug the power cord.
2. Remove the PMT cooler from the instrument. Refer to “PMT Cooler
Shroud Removal” on page 7-28.
3. Blow off the cooler fins using clean pressurized air. It may be more
convenient to vacuum the cooler fins. In either case, make sure that
particulate accumulation between the fins has been removed.
4. In necessary, use a small brush to remove residual particulate
accumulation.
5-2
42iQ Low Source Instruction Manual
Thermo Scientific
Maintenance
Capillaries Inspection and Replacement
Capillaries
Inspection and
Replacement
The capillaries normally only require inspection when instrument
performance indicates that there may be a flow problem.
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly ground antistatic wrist strap must
be worn while handling any internal component. ▲
Use the following procedure to inspect and replace the capillaries. This
procedure can be used to check any or all of the capillaries.
1. Turn instrument OFF, unplug power cord and remove the cover
(Figure 2–1).
Figure 5–1. Inspecting and Replacing the Capillaries
Thermo Scientific
42iQ Low Source Instruction Manual
5-3
Maintenance
Capillaries Inspection and Replacement
2. Remove the fitting(s) from the reaction chamber body using a 5/8-inch
wrench being careful not to lose the ferrule or o-ring.
3. Remove the glass capillaries, ferrule, and o-ring. Inspect o-ring for cuts
or abrasion, and replace as necessary.
4. Check capillary for particulate deposits. Clean or replace as necessary.
5. Replace capillary in reaction chamber body, making sure the o-ring is
around the capillary before inserting it into the body.
6. Replace fitting. Note that the fitting should be tightened slightly more
than hand tight.
7. Reconnect tubing to top of fittings, being careful to insert ferrule and
o-ring properly, and tighten knurled nut finger tight.
8. Re-install the cover.
9. Connect the power cord and turn the instrument ON.
5-4
42iQ Low Source Instruction Manual
Thermo Scientific
Maintenance
Pump Rebuilding
Pump Rebuilding
Use the following procedure to rebuild the pump.
Equipment required:
Pump rebuild kit (qty. 2)
Phillips drive, #1 or Torque drive, T10 (depending on pump version)
Pencil or marker
Figure 5–2. Dual Stage Pump
Note To avoid opening the pneumatic connection between the pump
heads, service the pump as described below with the following addition:
Make steps 1 to 3 and 11 for both pump heads together. ▲
1. Turn instrument OFF, unplug the power cord, and remove the cover.
2. Mark the position of head parts relative to each other by drawing a line
with a pencil. This helps avoid incorrect assembly later.
3. Undo the four screws in the head.
4. Lift the head plate and the intermediate plate off the housing.
Thermo Scientific
42iQ Low Source Instruction Manual
5-5
Maintenance
Pump Rebuilding
5. Hold the pump with one hand, so that the diaphragm is pointing
downwards. Lift the diaphragm by the opposing side edges, grasp it and
unscrew it in the counter-clockwise direction.
6. Remove connection rod disc and diaphragm spacers from the threaded
pin of the diaphragm.
7. Push the connection rod disc and the diaphragm spacers in this order
onto the threaded pin of the new diaphragm.
8. Move the connecting rod to the upper point.
9. Screw the new diaphragm with connection rod disc and spacers
clockwise onto the connection rod and tighten hand-tight.
10. Place the intermediate plate on housing, in the position indicated by
the drawing line.
11. Place the new valve plate on the intermediate plate.
12. Place the head plate on the intermediate plate, in the position indicated
by the drawing line; gently tighten the four screws, evenly and
diagonally (if a torque screwdriver is available: torque about 0.30 Nm).
13. Let the pump run.
5-6
42iQ Low Source Instruction Manual
Thermo Scientific
Maintenance
Pump Rebuilding
Figure 5–3. Pump Rebuilding
Thermo Scientific
42iQ Low Source Instruction Manual
5-7
Maintenance
Leak Test
Leak Test
Use the following procedure to perform a leak test.
Equipment Required:
Cap
Vacuum Tester with Gauge (with a resolution of .5 in Hg or better)
1. Turn instrument OFF, unplug the power cord.
2. Block the SAMPLE bulkhead on the rear panel with a leak-tight cap.
3. Connect the vacuum tester tool to the EXHAUST bulkhead on the
rear panel.
4. Squeeze trigger until gauge reads to pull in 10 in Hg.
5. Observe vacuum gauge for stable reading for 5 minutes. If reading
remains at 10 in Hg, no leak is present.
Note Acceptable leak rate is .5 in Hg over 10 minutes. ▲
5-8
42iQ Low Source Instruction Manual
Thermo Scientific
Chapter 6
Troubleshooting
The troubleshooting guide presented in this chapter is designed to help
isolate and identify instrument problems.
Safety Precautions
Troubleshooting
Guide
Read the safety precautions in Appendix A, “Safety, Warranty, and WEEE”
before performing any actions listed in this chapter.
Table 6–1 provides general troubleshooting information for the common
platform and indicates the checks that you should perform if you
experience an instrument problem. It also lists 42iQLS specific
troubleshooting information and alarm messages you may see on the
graphics display and provides recommendations about how to resolve the
alarm condition.
Table 6–1. 42iQLS Troubleshooting Guide
Thermo Scientific
Problem
Possible Cause
Action
Instrument does not start
(LEDs on front panel do not
come on and display is
blank)
No power
Verify that the power cord is
plugged in, power is available and
that it matches the voltage and
frequency configuration of the
instrument.
Fuse is blown or
missing
Disconnect power and check fuses
with a volt meter.
Bad switch or wiring
connection to switch
Check for 24V @ J9 on the
Backplane board (middle pins).
Check all wiring connections.
Front panel display does
not start (LEDs on front
panel are off)
Disconnected ribbon
cable
Power down and evaluate
connections of display ribbon
cable.
Front panel display does
not start (LEDs on front
panel are on)
Defective Display
Connect to the instrument using
ePort. Select “Remote Interface”. If
normal GUI is displayed, replace
defective display.
Front panel display stays
white after power up (LEDs
on front panel are on)
Unseated or missing
Micro SD card
Power off, re-seat Micro SD or
install if missing.
42iQ Low Source Instruction Manual 6-1
Troubleshooting
Troubleshooting Guide
Problem
Possible Cause
Action
Micro SD Card
Programming
If Micro SD card was just replaced,
re-install the old one. If the
problem is fixed, request a
replacement Micro SD card.
Solenoid current out of
range (option)
Sticking or damaged
solenoid
Reset solenoid via Settings>Health
Check>Status and Alarms>Valve
and Pump Resets screen. If
damaged, replace solenoid valve
block.
Pump current out of range
Damaged or dirty pump
Reset pump via Settings>Health
Check>Status and Alarms>Valve
and Pump Resets. Inspect and
refurbish pump. If pump motor is
damaged, replace pump.
No output signal (or very
low output)
No sample gas reaching
the analyzer
Check input sample flow.
Ruptured pump
diaphragm
Rebuild pump head.
Blocked sample
capillary
Unplug power cord. Clean or
replace capillary.
No ozone reaching the
reaction chamber
Check the “Configuration” menu to
see if the ozonator is ON. If it is
ON, check dry air supply.
Disconnected or
defective input or high
voltage supply
Unplug power cord. Check that
cables are connected properly.
Check cable resistance.
Analyzer not calibrated
Recalibrate.
Defective ±12 volt
Check supply voltages in Status
and Alarms>Reaction Chamber
screen
Dryer to ozonator
depleted
Replace.
Line voltage
fluctuations
Check to see if line voltage is
within specifications.
Defective pump
Rebuild pump.
Unstable NO or NO2
source
Replace.
Clogged capillaries
Unplug power cord. Clean or
replace capillary.
Clogged sample air
filter
Replace filter element.
Defective or low
sensitivity PMT
Unplug power cord. Remove PMT.
Install known good PMT. Plug in
No output signal
Calibration drift
Excessive noise
6-2
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Thermo Scientific
Troubleshooting
Troubleshooting Guide
Problem
Possible Cause
Action
power cord. Check performance.
Defective cooler
Check temperature (less than -2 °C
at Tamb = 25 °C).
Incorrect calibration
source
Verify accuracy of multipoint
calibration source gas.
Leak in sample probe
line
Check for variable dilution.
Partially blocked sample
capillary
Unplug power cord. Clean or
replace capillary.
Hang up/blockage in
sample filter
Change element.
Questionable
calibration gas
Verify accuracy.
Converter temperature
too high or too low
Temperature should be
approximately 325 °C for
Molybdenum, 625 °C for stainless
steel.
Low line voltage
Check to see if line voltage is
within specifications.
Molybdenum consumed
Replace Molybdenum converter
cartridge.
Fan failure
Replace fan if not operating
properly.
Dirty fan filter
Clean or replace filter.
Overheating PCB
Locate defective PCB reporting the
error and replace if needed.
Heaters failed
Replace heaters as needed.
Defective PCB
Replace PCB.
Check fan operation
Replace defective fan.
Check fan filter
Clean or replace filter.
Bad thermistor
Replace thermistor.
Alarm – NO2 Converter
Temperature
Converter temperature
low
Stainless steel converter should be
hot to the touch. If not, the heater
may have failed. Check that
converter temperature setpoint is
approximately 625 °C.
Alarm – Pressure
High pressure indication
Check plumbing for leaks.
Non-linear response
Excessive response time
Improper converter
operation
Alarm – Internal
Temperature
Alarm – Bench
Temperature
Alarm – Cooler Temp
Sensor
Check the pump for a tear in the
diaphragm.
Thermo Scientific
42iQ Low Source Instruction Manual
6-3
Troubleshooting
Troubleshooting Guide
Problem
Possible Cause
Action
Replace if needed.
Check the capillary is properly
installed and o-rings are in good
shape.
Alarm – Flow
Flow low
Check sample capillary for
blockage. Replace as necessary.
If using sample particulate filter,
make sure it is not blocked.
Disconnect sample particulate
filter from the sample bulkhead. If
flow increases, replace the filter.
Flow high
When delivering zero air or gas to
the instrument, use an atmospheric
dump.
Flow = 0 LPM
Check that Step POL board #1 has
both dip switch settings of SW2 off
(both facing the rear of the
instrument). Verify the pump is
plugged into the Step POL board.
Worn Diaphragm
Rebuild pump every 12 months or
as needed.
Alarm – Ozonator Flow
Ozone flow low
Check ozone capillary for blockage.
Replace as necessary.
Alarm – NO, NO2, NOx
Concentration
Concentration has
exceeded range limit
Check to ensure range corresponds
with expected value. If not, select
proper range.
Check user-defined low set point;
set to zero.
Alarm – Board
Communication
Alarm – Power Supply
Alarm – Module
Temperature
6-4
42iQ Low Source Instruction Manual
Cable connection
Check that DMC cable is connected
properly. Reseat if needed.
Defective DMC PCB
Replace DMC board.
Cable connection
Check that DMC cable is connected
properly. Reseat if needed.
Defective component
Check for other alarms, as it is
possible that another component of
that DMC is drawing too much
current.
Defective DMC PCB
Replace DMC board.
Cable connection
Check that DMC cable is connected
properly. Reseat if needed.
Other alarm
Make sure the instrument
temperature is not too high or in
alarm.
Thermo Scientific
Troubleshooting
Troubleshooting Guide
Problem
Possible Cause
Action
Defective DMC PCB
Replace DMC board.
Alarm – 5V/24V Step Board
Cable connection
Check the cable connections to
that Step POL board.
Alarm – Analog I/O
Defective PCB
Replace Analog board.
Alarm – Digital I/O
Defective PCB
Replace Digital board.
Alarm – NO Bkg Check
Offset
Incorrect high alarm
limit
Verify the high limit is correct via
Settings>Status and
Alarms>Concentrations screen.
Instrument background
calibration failed
Recalibrate the instrument.
Incorrect high alarm
limit
Verify the high limit is correct via
Settings>Status and
Alarms>Concentrations screen.
Instrument span
calibration failed
Recalibrate the instrument.
Alarm – Ambient
Thermistor
Defective
Flow/Pressure board
Replace defective DMC board as
needed.
Alarm – Chamber Pressure
Defective
Flow/Pressure board
Replace defective DMC board as
needed.
Alarm – Bench
Temperature Short
Cable connection
Check the cable connection from
the heater to the DMC board.
Broken wire
Verify the wires are properly
connected to both sides of the
heater.
Defective heater
Replace heater as needed.
Defective DMC board
Replace defective DMC board as
needed.
Cable connection
Check the cable connection from
the heater to the DMC board.
Broken wire
Verify the wires are properly
connected to both sides of the
heater.
Defective heater
Replace heater as needed.
Defective DMC board
Replace defective DMC board as
needed.
Defective cooler
Replace cooler as needed.
Defective DMC board
Replace DMC board as needed.
Defective cooler
Replace cooler as needed.
Defective DMC board
Replace DMC board as needed.
Alarm – NO Span Check
Offset
Alarm – Bench
Temperature Open
Alarm – Cooler Current too
Low
Alarm – Cooler Current too
High
Thermo Scientific
42iQ Low Source Instruction Manual
6-5
Troubleshooting
Troubleshooting Guide
Problem
Possible Cause
Action
Alarm – Cooler Voltage too
Low
Defective cooler
Replace cooler as needed.
Defective DMC board
Replace DMC board as needed.
Defective cooler
Replace cooler as needed.
Defective DMC board
Replace DMC board as needed.
Defective PMT
Replace PMT as needed.
Defective DMC board
Replace DMC board as needed.
Defective PMT
Replace PMT as needed.
Defective DMC board
Replace DMC board as needed.
Alarm – Frequency too Low
Input board is out of
calibration
Recalibrate the Input board.
Alarm – Frequency too High
Input board is out of
calibration
Recalibrate the Input board.
Alarm – Cooler Voltage too
High
Alarm – PMT Voltage too
Low
Alarm – PMT Voltage too
High
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42iQ Low Source Instruction Manual
Thermo Scientific
Chapter 7
Servicing
This chapter describes the periodic servicing procedures that should be
performed on the instrument to ensure proper operation and explains how
to replace the 42iQLS subassemblies.
Safety
Precautions
Read the safety precautions before beginning any procedures in this
chapter.
Icon Here
The service procedures in this manual are restricted to qualified service
representatives. ▲
Icon Here
If the equipment is operated in a manner not specified by the
manufacturer, the protection provided by the equipment may be
impaired. ▲
CAUTION If the LCD panel breaks, do not let the liquid crystal contact
your skin or clothes. If the liquid crystal contacts your skin or clothes, wash
immediately using soap and water. ▲
Do not remove the LCD panel or frame from the LCD module. ▲
The LCD polarizing plate is very fragile, handle it carefully. ▲
Do not wipe the LCD polarizing plate with a dry cloth, as it may easily
scratch the plate. ▲
Do not use alcohol, acetone, MEK or other Ketone based or aromatic
solvents to clean the LCD module, but rather use a soft cloth moistened
with a naphtha cleaning solvent. ▲
Do not place the LCD module near organic solvents or corrosive gases. ▲
Do not shake or jolt the LCD module. ▲
Thermo Scientific
42iQ Low Source Instruction Manual 7-1
Servicing
Safety Precautions
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly grounded antistatic wrist strap
must be worn while handling any internal component. For more
information about appropriate safety precautions, see “Safety”. ▲
Note If an antistatic wrist strap is not available, be sure to touch the
instrument chassis before touching any internal components. When the
instrument is unplugged, the chassis is not at earth ground. ▲
Figure 7–1. Properly Grounded Antistatic Wrist Strap
Note Ground to unpainted case or outlet as shown. ▲
7-2
42iQ Low Source Instruction Manual
Thermo Scientific
Servicing
Firmware Updates
Firmware
Updates
New versions of the instrument software are periodically made available
over Ethernet, USB flash drive, or company website at:
www.thermofisher.com
For more information on installing new firmware, see “Installing New
Firmware” in the iQ Series Communications manual.
Replacement
Parts List
For a complete list of spare parts, visit the company website at:
www.thermofisher.com/42iQLS
Refer to Figure 7–2 and Figure 7–3 to identify the component location.
Thermo Scientific
42iQ Low Source Instruction Manual
7-3
Servicing
Replacement Parts List
Figure 7–2. 42iQLS Component Layout Top View
Figure 7–3. 42iQLS Component Layout Side View
7-4
42iQ Low Source Instruction Manual
Thermo Scientific
Servicing
Fuse Replacement
Fuse
Replacement
Use the following procedure to replace the fuses.
1. Turn instrument OFF and unplug the power cord.
2. Remove fuse drawer, located on the AC power connector.
3. If either fuse is blown, replace both fuses.
4. Insert fuse drawer and reconnect power cord.
Figure 7–4. Replacing the Fuses
Thermo Scientific
42iQ Low Source Instruction Manual
7-5
Servicing
Filter Replacement
Filter
Replacement
Use the following procedure to replace the filter.
1. Turn instrument OFF and unplug the power cord.
2. Starting with top right corner, pull out to remove fan cover.
Figure 7–5. Start with Top Right Corner of Fan Cover
3. Replace filter and snap fan cover back in place.
Figure 7–6. Removing the Fan Cover
7-6
42iQ Low Source Instruction Manual
Thermo Scientific
Servicing
Fan Replacement
Fan Replacement
Use the following procedure to replace the fan.
Equipment required:
Phillips drive, #2
1. Turn instrument OFF, unplug power cord, and remove the cover
(Figure 2–1).
2. Unplug the fan cable J18.
Figure 7–7. Unplugging the Fan Cable
3. Starting with top right corner, pull out to remove fan cover.
4. Unhook the four latches of the fan cover.
5. Unfasten the four 6-32 screws from the fan housing.
6. Replace fan and reassemble in reverse order.
Thermo Scientific
42iQ Low Source Instruction Manual
7-7
Servicing
Fan Replacement
Figure 7–8. Replacing the Fan
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42iQ Low Source Instruction Manual
Thermo Scientific
Servicing
Measurement Side Removal and Replacing
Measurement
Side Removal
and Replacing
Use the following procedure to remove and replace the measurement side if
necessary.
Equipment required:
Phillips drive, #2
1. Turn instrument OFF, unplug power cord, and remove the cover
(Figure 2–1).
2. Unplug the fan cable J18 (Figure 7–9).
Figure 7–9. Unplugging the Fan Cable
3. Unplug DMC cable (Figure 7–10).
Thermo Scientific
42iQ Low Source Instruction Manual
7-9
Servicing
Measurement Side Removal and Replacing
Figure 7–10. Unplugging the DMC Cable
4. Gripping from the top corners of the front panel and pull outwards.
5. Remove three 8-32 flat head screws (Figure 7–11).
Figure 7–11. Unfasten Hardware Front for Measurement Side Removal
7-10
42iQ Low Source Instruction Manual
Thermo Scientific
Servicing
Measurement Side Removal and Replacing
6. Swing arm open.
7. Unfasten captive hardware.
8. Remove two 8-32 flat head screws.
9. Pull measurement side out.
10. Replace and reassemble in reverse order.
Figure 7–12. Unfasten Hardware Rear for Measurement Side Removal
Thermo Scientific
42iQ Low Source Instruction Manual
7-11
Servicing
LCD Module Replacement
LCD Module
Replacement
Use the following procedure to replace the LCD module.
Equipment required:
Wrench, 1/4
1. Turn instrument OFF and unplug the power cord.
2. Gripping from the top corners of the front panel and pull outwards.
3. Unfasten four nuts (Figure 7–13).
Figure 7–13. Replacing the LCD Module
4. Remove cover.
5. Unplug LCD cables from backside of board.
6. Pull board off the standoffs.
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42iQ Low Source Instruction Manual
Thermo Scientific
Servicing
LCD Module Replacement
Figure 7–14. Remove Electrical Cables from LCD
7. Replace LCD module and reassemble in reverse order.
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42iQ Low Source Instruction Manual
7-13
Servicing
I/O Replacement
I/O Replacement
Use the following procedure to replace the I/O boards.
1. Turn instrument OFF, unplug power cord, and remove the cover
(Figure 2–1).
2. Swing arm open.
Figure 7–15. I/O Replacement, Arm
3. Pull board upwards.
Figure 7–16. I/O Replacement, Remove Board
7-14
42iQ Low Source Instruction Manual
Thermo Scientific
Servicing
I/O Replacement
4. During install, make sure to align cutout circular to keyway.
5. Insert board downwards.
Figure 7–17. I/O Replacement, Install
6. Close arm. Make sure expansion bracket aligns to the inside of the
rectangular cutouts.
Figure 7–18. I/O Replacement, Close Arm Alignment
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42iQ Low Source Instruction Manual
7-15
Servicing
Peripherals Support Board and System Controller Board Replacement
Peripherals
Support Board
and System
Controller Board
Replacement
Use the following procedure to replace the peripherals support board or
system controller board.
1. Turn instrument OFF, unplug power cord, and remove the cover
(Figure 2–1).
2. Pull tab out (two per board).
3. Pull board out.
Figure 7–19. Replacing the Peripherals Support Board
4. Replace board and reassemble in reverse order.
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42iQ Low Source Instruction Manual
Thermo Scientific
Servicing
DMC Pressure and Flow Board
DMC Pressure
and Flow Board
Use the following to replace the DMC pressure and flow board.
Equipment required:
Hex drive, 7/16
1. Turn instrument OFF, unplug power cord, and remove the cover
(Figure 2–1).
2. Unplug cables from the pressure and flow board.
Figure 7–20. Flow Pressure Board, Disconnect DMC Cable
3. Disconnect plumbing.
4. Using 7/16 hex drive, unfasten four #6-32 socket cap head screws.
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42iQ Low Source Instruction Manual
7-17
Servicing
DMC Pressure and Flow Board
Figure 7–21. Flow Pressure Board, Screws
5. Replace board and reassemble in reverse order.
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Thermo Scientific
Servicing
Pump Replacement
Pump
Replacement
Use the following procedure to replace the pump.
Equipment required:
Phillips drive, #1 and #2
1. Turn instrument OFF, unplug power cord, and remove the cover
(Figure 2–1).
2. Unplug pump cable from step pol board J7.
3. Twist opposite direction to unlock tube clamps.
Note Push in tube clamp to lock. ▲
4. Disconnect tubing from pump.
5. Unfasten two captive hardware.
6. Slide pump left until keyway meets opening.
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42iQ Low Source Instruction Manual
7-19
Servicing
Pump Replacement
Figure 7–22. Remove Pump, Disconnect and Unfasten
7. Pull pump outwards.
Note When installing pump, make sure the pump keyway opening goes
over the keyway. ▲
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42iQ Low Source Instruction Manual
Thermo Scientific
Servicing
Pump Replacement
Figure 7–23. Pump Removal, Keyway
8. Remove two screws.
Thermo Scientific
42iQ Low Source Instruction Manual
7-21
Servicing
Pump Replacement
Figure 7–24. Pump replacing, Unfasten Screws
9. Replace pump and reassemble in reverse order.
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Thermo Scientific
Servicing
Power Supply Replacement
Power Supply
Replacement
Use the following procedure to replace the power supply.
Equipment required:
Phillips drive, #2
1. Turn instrument OFF, unplug power cord, and remove the cover
(Figure 2–1).
2. Unplug all electrical shown J9, J10, J24, J25, J26, and ground.
3. Unfasten captive hardware.
4. Slide power supply left clearing three case floor plate keyways.
Figure 7–25. Removing Power Supply
5. Pull power supply up.
6. Replace power supply and reassemble in reverse order.
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Servicing
Power Supply Replacement
Figure 7–26. Replacing Power Supply
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Servicing
Step POL Board Replacement
Step POL Board
Replacement
Use the following procedure to replace the Step POL Board.
Equipment required:
Torque screwdriver, T15 or Slot screwdriver, 3/16
1. Turn instrument OFF, unplug power cord, and remove the cover
(Figure 2–1).
2. Unplug step pol power cable J4.
3. Unplug step pol signal cable J2.
4. Unplug pump cable J7.
5. Unfasten captive hardware.
Figure 7–27. Unplug and Unfasten Step POL Board
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Servicing
Step POL Board Replacement
Figure 7–28. Clear Partition Keyway Step POL Board
6. Slide step board 1 upwards clearing the partition panel keyway.
7. If replacing step board 1, make sure switch 1 and 2 are pointed away
from ON (Figure 7–29). If replacing optional step board 2, make sure
switch 1 is pointed towards ON and switch 2 is pointed away from ON
(Figure 7–29).
8. Replace step POL board and reassemble in reverse order.
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Servicing
Step POL Board Replacement
Figure 7–29. Step POL Board 1 Switch Settings
Figure 7–30. Replace Step POL board pt 2
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Servicing
DMC PMT Cooler and Reaction Chamber Replacement
DMC PMT Cooler
and Reaction
Chamber
Replacement
PMT Cooler Shroud
Removal
Use the following procedure to replace the PMT cooler and clean or
replace the reaction chamber assembly.
●
Removing the PMT Cooler
●
Replacing the PMT board
●
Removing and Cleaning the Reaction chamber
●
Replacing the PMT Cooler and Reaction chamber
●
PMT Replacement
Use the following procedure to remove the PMT cooler from the
instrument.
Equipment Required:
Phillips drive, #2
1. Turn the instrument OFF, unplug the power cord, and remove the
cover (Figure 2–1).
Icon Here
Make sure the PMT has cooled down before touching. ▲
2. Unhook plumbing by pulling loop downwards and unhook tubing.
3. Using a #2 Phillips drive, unfasten two 6-32 flat head screws.
4. Pull shroud outwards.
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DMC PMT Cooler and Reaction Chamber Replacement
Figure 7–31. Remove PMT Cooler Shroud
5. Unplug J3, J1, and J6 (fan).
6. Disconnect all plumbing depending on the options. Configuration
plumbing connections will vary.
7. Using #2 Phillips drive, unfasten four captive hardware.
8. Pull PMT cooler upwards.
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DMC PMT Cooler and Reaction Chamber Replacement
Figure 7–32. Remove DMC PMT Cooler
PMT Cooler Board
Replacement
Use the following procedure to replace the PMT cooler board.
Equipment Required:
Phillips drive, #2
1. Turn the instrument OFF, unplug the power cord, and remove the
cover.
2. Remove DMC Converter as described in “PMT Cooler Shroud
Removal” in this chapter.
3. Unplug all electrical connections from the board.
4. Using a #2 Phillips drive, unfasten six #6-32 pan head screws.
5. Pull board outwards.
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Servicing
DMC PMT Cooler and Reaction Chamber Replacement
Figure 7–33. Remove PMT Cooler Board
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Servicing
DMC PMT Cooler and Reaction Chamber Replacement
Reaction Chamber
Cleaning and/or
Removal
Use the following procedure to clean or remove the reaction chamber.
Equipment Required:
Phillips drive, #2
1. Turn the instrument OFF, unplug the power cord, and remove the
cover.
2. Remove DMC Converter as described in “PMT Cooler Shroud
Removal” in this chapter.
3. Unplug heater J8 from board.
Figure 7–34. Photo Reaction Chamber Cleaning, Electrical
4. Disconnect plumbing as shown.
5. Using a 9/64-inch hex drive, unfasten three #8-32 socket cap head
screws.
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DMC PMT Cooler and Reaction Chamber Replacement
Figure 7–35. Photo Reaction Chamber Cleaning, Hardware
6. Pull reaction chamber outwards.
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly grounded antistatic wrist strap
must be worn while handling an internal component. ▲
7. To reinstall reaction chamber, follow previous steps in reverse, making
sure to back fill the cooler with dry air or nitrogen prior to installing
reaction chamber.
8. Reinstall the measurement bench. Refer to Figure 7–34 and Figure 7–
41.
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Servicing
DMC PMT Cooler and Reaction Chamber Replacement
Figure 7–36. Photo Reaction Chamber Cleaning, Window
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Servicing
DMC PMT Cooler and Reaction Chamber Replacement
Photomultiplier
Tube (PMT)
Replacement
Use the following to replace the photomultiplier tube (PMT).
Equipment Required:
Screwdriver, flat head
Phillips drive, #2
1. Turn the instrument OFF, unplug the power cord, and remove the
cover (Figure 2–1).
2. Unplug electrical connections PMT (J7) and HVPS (J4).
Figure 7–37. PMT Tube Replace-Elec-Pt1
3. Using a flat head screwdriver, wedge out of top right corner starting
point, labeled 1 (Figure 7–54).
4. Continue to wedge out the four midpoints of the plate to remove the
snap on access panel, labeled 2 (Figure 7–55).
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Servicing
DMC PMT Cooler and Reaction Chamber Replacement
Figure 7–38. Removing the Access Panel, Starting Point
5. .Pull access cover out.
Figure 7–39. Access Cover
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Servicing
DMC PMT Cooler and Reaction Chamber Replacement
Figure 7–40. PMT Tube Replace-Screws
6. Using a #2 Phillips drive, unfasten three 8-32 pan head screws.
Equipment Damage Do not point the photomultiplier tube at a light
source. This can permanently damage the tube. ▲
7. Pull the PMT and PMT base from cooler assembly by twisting it
slightly back and forth.
8. To install PMT, follow previous steps in reverse order making sure to
backfill the cooler with dry air or nitrogen prior to replacing the PMT.
9. Perform a PMT calibration as described on page 3-94.
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Servicing
DMC Converter Replacement
DMC Converter
Replacement
Use the following procedure to replace the converter.
Equipment Required:
Phillips drive, #2
1. Turn the instrument OFF, unplug the power cord, and remove the
cover.
2. Unplug DMC cables 2X.
3. Disconnect all plumbing 8X.
Note The amount of connections will vary depending on the different
options installed. ▲
4. Using a #2 Phillips drive, unfasten captive hardware 4X.
Figure 7–41. Converter DMC Assembly Remove
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Servicing
DMC Converter Replacement
Converter Assembly
Board Replacement
Use the following procedure to replace the converter assembly board.
Equipment Required:
Phillips drive, #2
1. Turn the instrument OFF, unplug the power cord, and remove the
cover.
2. Remove DMC Converter as described in “DMC Converter
Replacement” in this chapter.
3. Unplug electrical J6 and J7.
4. Using a #2 Phillips drive, unfasten four 6-32 pan head screws.
Figure 7–42. Converter Assembly Remove bd
5. Pull converter assembly board outwards.
6. Replace converter assembly board and assemble in reverse order.
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Servicing
DMC Converter Replacement
Converter Cartridge
Heater Replacement
Use the following procedure to replace the converter cartridge heater.
Equipment Required:
Phillips drive, #2
Hex drive, 1/4-inch
1. Turn the instrument OFF, unplug the power cord, and remove the
cover.
2. Remove DMC Converter as described in “DMC Converter
Replacement” in this chapter.
3. Using a 1/4-inch hex drive, unfasten six 6-32 hex head screws.
4. Take apart top housing assembly and insulator to get to the heater
assembly.
5. Remove the converter cartridge/heater assembly from the bottom
housing assembly.
6. Loosen the heater clamp, pry heater apart no wider than necessary and
remove the converter cartridge noting the proper orientation of heater
wires and thermocouple probe.
7. To replace converter, follow previous steps in reverse. Note be sure to
wrap the O3 converter tube snugly around the heater.
8. Reinstall in reverse order.
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Servicing
DMC Converter Replacement
Figure 7–43. Converter Assembly Replace Heater
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Servicing
DMC Ozonator
DMC Ozonator
Ozonator and
Transformer
Removal
Use the following procedure to replace the ozonator and transformer board,
replace the flow switch and optional ammonia scrubber.
●
Removing the ozonator and transformer
●
Replacing the ozonator and transformer board
●
Replacing the flow switch
●
Replacing the ammonia scrubber
Use the following procedure to remove the ozonator and transformer.
Equipment Required:
Phillips drive, #2
1. Turn the instrument OFF, unplug the power cord, and remove the
cover (Figure 2–1).
2. Unplug DMC converter DMC (J2) and flow pressure board (J4).
Figure 7–44. HVPS, Electrical
3. Disconnect plumbing.
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Servicing
DMC Ozonator
4. Using a #2 Phillips drive, unfasten captive hardware 4X.
Figure 7–45. HVPS Remove
Ozonator
Replacment
Use the following procedure to replace the ozonator.
1. Unplug ozonator (J1).
2. Disconnect plumbing 2X.
3. Ozonator—using a #2 Phillips drive, unfasten two #6-32 pan head
screws.
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Servicing
DMC Ozonator
Figure 7–46. Replace Ozonator
Transformer
Replacement
Use the following procedure to replace the transformer.
1. Ozonator transformer—using a #2 Phillips drive, unfasten four #6-32
pan head screws.
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Servicing
DMC Ozonator
Figure 7–47. Replace Transformer
Ozonator and
Transformer Board
Replacement
Use the following procedure to replace the ozonator and transformer board.
Equipment Required:
Phillips drive, #2
1. Remove DMC Ozonator as described in “DMC Ozonator” in this
chapter.
2. Unplug all electrical from HPVS board, ozonator (J1), flow switch (J5)
converter DMC (J2) and flow pressure board (J4).
3. Using a #2 Phillips drive, unfasten four #6-32 pan head screws.
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Servicing
DMC Ozonator
Figure 7–48. HPVS Remove Bd
Flow Switch
Replacement
Use the following procedure to replace the flow switch.
Equipment Required:
Phillips drive, #2
1. Remove DMC Ozonator as described in “DMC Ozonator” in this
chapter.
2. Unplug flow switch (J5) from board.
3. Pull flow switch off clip after unplugging from board.
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Servicing
DMC Ozonator
Figure 7–49. Flow Switch Remove
Ammonia Scrubber
Replacement
Use the following procedure to replace the ammonia scrubber.
Equipment Required:
Phillips drive, #2
1. Remove DMC Ozonator as described in “DMC Ozonator” in this
chapter.
2. Disconnect plumbing 2X.
3. Pull Ammonia scrubber off clips 2X.
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Servicing
DMC Ozonator
Figure 7–50. Remove Ammonia Scrubber
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Servicing
Optional Manifold Replacement
Optional
Manifold
Replacement
Use the following procedure to replace the manifold.
Equipment required:
Hex wrench, 9/16
Hex drive, 9/64
1. Turn the instrument OFF, unplug the power cord, and remove the
cover (Figure 2–1).
2. Unplug three electrical connections (J5, J6, and J8) from the step pol
board 1.
Figure 7–51. Replacing the Manifold pt 1
3. Unfasten three nuts. Remove the nuts, front and back ferrules as shown
from span, zero in, sample back panel (Figure 7–52).
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Servicing
Optional Manifold Replacement
Figure 7–52. Replacing the Manifold pt 2
4. Disconnect tubing.
5. Using a #2 Phillips drive, unfasten four #8-32 socket cap head screws.
Figure 7–53. Replacing the Manifold pt 3
6. Replace the manifold and assemble in reverse order.
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Servicing
Optional Solenoid Valves Removal
Optional
Solenoid Valves
Removal
Use the following procedure to replace the mode valve, and optional
permeation oven valve and lag valve.
Equipment Required:
Phillips drive, #1
1. Turn the instrument OFF, unplug the power cord, and remove the
cover (Figure 2–1).
2. Unplug mode valve (J5), lag valve (J6), and perm valve (J7) from step
board 1 or 2.
Figure 7–54. Mode-Lag-Perm Electrical Connection
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Servicing
Optional Solenoid Valves Removal
3. Using a #1 Phillips drive, loosen two #4-40 pan head screws.
4. Slide valve out.
Equipment Damage Do not disconnect the plumbing from the valve end.
Disconnect from the attaching end only. This will prevent damaging and
leaks from the valve end. ▲
Figure 7–55. Mode-Lag-Perm Hardware, Plumbing
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Servicing
Optional DMC Oxygen Sensor
Optional DMC
Oxygen Sensor
Oxygen Sensor
Removal
Use the following procedure to remove the oxygen sensor from the
instrument case. It is easier to do the following by removing the oxygen
sensor first then remove and replace the following as necessary:
●
Oxygen Sensor removal
●
Oxygen Sensor board replacement
●
Oxygen Sensor capillary replacement
●
Oxygen Sensor replacement
Use the following procedure to remove and replace the oxygen sensor.
Equipment required:
Phillips drive, #2
1. Turn instrument OFF, unplug power cord, and remove the cover
(Figure 2–1).
2. Unplug DMC cable to oxygen sensor board DMC (J4).
3. Disconnect plumbing.
4. Using a #2 Phillips drive, unfasten captive hardware.
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Servicing
Optional DMC Oxygen Sensor
Figure 7–56. Oxygen Sensor Removal pt 1
5. Slide oxygen sensor assembly left.
Note Make sure oxygen sensor plate clears the edge and stud. ▲
Figure 7–57. Oxygen Sensor Removal pt 2
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Optional DMC Oxygen Sensor
6. Slide oxygen sensor assembly upwards.
Figure 7–58. Oxygen Sensor Removal pt 3
7. Pull away from the partition panel.
Note Make sure oxygen sensor plate clears the edge. ▲
Figure 7–59. Oxygen Sensor Removal pt 4
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Servicing
Optional DMC Oxygen Sensor
Oxygen Sensor
Board Replacement
Use the following procedure to replace the oxygen sensor board.
Equipment required:
Phillips drive, #2
1. Remove the oxygen sensor DMC from the instrument. Refer to
“Oxygen Sensor Removal” on page 7-53.
2. Unplug J1.
3. Using a #2 Phillips drive, unfasten five #6-32 pan head screws.
Figure 7–60. Replacing the Oxygen Sensor DMC Board
4. Slide board upwards.
Note Clear keyway. ▲
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Optional DMC Oxygen Sensor
Figure 7–61. Replacing the Oxygen Sensor DMC Board pt 2
5. Replace oxygen sensor board and reassemble in reverse order.
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Optional DMC Oxygen Sensor
Oxygen Sensor
Capillary
Replacement
Use the following to replace the oxygen sensor capillary.
Equipment required:
Ball-end hex drive, 3/32
1. Remove the oxygen sensor DMC from the instrument. Refer to
“Oxygen Sensor Removal” on page 7-53.
2. Using a 3/32 ball-end hex drive (angle alignment of screws), unfasten
two #4-40 cap screws.
3. Unlock tube clamp.
4. Unplug tube after unlocking tube clamp.
Figure 7–62. Replacing the Oxygen Sensor Capillary
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Optional DMC Oxygen Sensor
Figure 7–63. Replacing the Capillary pt 2
5. Replace capillary and reassemble in reverse order.
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Optional DMC Oxygen Sensor
Oxygen Sensor
Replacement
Use the following to replace the oxygen sensor.
Equipment required:
Phillips drive, #2
1. Remove the oxygen sensor DMC from the instrument. Refer to
“Oxygen Sensor Removal” on page 7-53.
2. Unplug oxygen sensor cable.
Figure 7–64. Replacing the Oxygen Sensor
3. Using a #2 Phillips drive, unfasten three #6-32 flat head screws.
4. Disconnect tubing.
5. Pull out oxygen sensor
6. Replace oxygen sensor and reassemble in reverse order.
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Optional DMC Oxygen Sensor
Ozonator DMC
Install
Use the following to install the oxygen sensor DMC.
Equipment required:
Phillips drive, #2
1. Slide oxygen sensor assembly downwards.
Note Make sure oxygen sensor plate slides into bottom pocket. ▲
Note Make sure oxygen sensor plate goes over the partition panel keyway
stud. ▲
Figure 7–65. Installing the Oxygen Sensor DMC
2. Slide oxygen sensor assembly right.
Note Make sure oxygen sensor plate fits under the stud. ▲
Note Make sure oxygen sensor plate slides into side pocket. ▲
3. Using a #2 Phillips drive, fasten captive hardware.
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Optional DMC Oxygen Sensor
Figure 7–66. Oxygen Sensor DMC install pt 2
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Chapter 8
System Description
The 42iQLS deploys a set of modular subsystems that comprise the total
instrument function. The core measurements for concentration are
contained in Distributed Measurement and Control (DMC) modules. This
chapter describes the function and location of the system components in
the module framework, including firmware, electronics, and I/O function.
The 42iQLS system components include:
●
●
Reaction Chamber DMC
●
Optical filter
●
Photomultiplier tube (PMT)
●
Photomultiplier tube cooler
Ozonator DMC
●
Ozonator DMC board
●
Ozone flow switch
●
Ozonator Permeation Dryer
●
NO2-to-NO converter DMC
●
●
●
Thermo Scientific
Converter DMC board
Common Electronics
●
Front panel
●
I/O (optional)
●
System control board
●
Backplane board
Peripherals Support System
●
Fan (on rear panel)
●
STEP POL board
●
Sample pump
●
Mode Solenoid
42iQ Low Source Instruction Manual 8-1
System Description
Reaction Chamber DMC
●
Reaction
Chamber DMC
Solenoid valve panel (optional)
●
Flow Pressure DMC with restricting capillary
●
Firmware
●
Oxygen sensor (optional)
The reaction chamber is where the sample reacts with ozone and produces
excited NO2 that gives off a photon of energy when it decays.
The reaction chamber is heated and controlled to approximately 50 °C in
order to ensure the greatest instrument stability. The sample and ozone
flow capillaries and a thermistor sensor are also housed in/on the reaction
chamber assembly.
Optical Filter
The optical filter housed in the reaction chamber limits the spectral region
viewed by the detector and eliminates possible interferences due to other
chemiluminescent reactions.
Photomultiplier
Tube
The Photomultiplier tube (PMT) provides the infrared sensitivity required
to detect the NO2 luminescence resulting from the reaction of the ozone
with the ambient air sample.
Optical energy from the reaction is converted to an electrical signal by the
PMT and sent to the input board that transmits it to the processor.
8-2
Photomultiplier
Tube Cooler
The thermoelectric PMT cooler reduces the PMT temperature to
approximately -3 °C to minimize dark current and increase instrument
sensitivity. The cooler helps to increase zero and span stability over a wide
ambient temperature range. The cooler housing also shields the PMT from
external electrical and optical interferences.
Ozonator
The Ozonator generates the necessary ozone concentration required for the
chemiluminescent reaction. The ozone reacts with the NO in the ambient
air sample to produce the electronically excited NO2 molecules.
Ozonator Flow
Switch
The ozonator flow switch located at the ozonator inlet completes an
electrical safety circuit when air flows through the sensor to the ozonator. If
airflow stops, the flow sensor breaks the electrical circuit to the ozonator
and shuts it off to prevent the ozonator from overheating.
42iQ Low Source Instruction Manual
Thermo Scientific
System Description
Ozonator Permeation Dryer
Ozonator
Permeation
Dryer
The permeation dryer minimizes routing maintenance procedures by
providing a continuous stream of dry air to the ozonator (using the
selective water permeation characteristics of the dryer). With the
permeation dryer option, it is not necessary to constantly replenish the
ozonator air-drying column as in the standard instrument.
NO2-to-NO
Converter
The NO2-to-NO converter heats molybdenum to approximately 325 °C in
order to convert and detect NO2. The converter consists of an insulated
housing, heater, replaceable cartridge, and a type K thermocouple sensor.
Common
Electronics
The common electronics contain the core computational and power
routing hardware for the 42iQLS, and is replicated throughout other iQ
series products (Figure 8–1). It also contains front panel display, the USB
ports, the Ethernet port, and the optional I/O interfaces (RS-485, analog,
and digital).
Figure 8–2 shows the PCBA interconnect structure for the 42iQLS,
including options. The modular design of the instrument is conveyed in
the architecture. Brief descriptions of the specific PCBAs follow.
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42iQ Low Source Instruction Manual
8-3
8-4
42iQ Low Source Instruction Manual
MFC 1
MFC 2
MFC 3
ANALOG I/O
BOARD
GND
POL 1, 24V
POWER
POL 1
DATA
BOARD
DMC 1
COMMUNICATIONS
Not all connections apply to all Model iQ instruments.
+24V Fan
Measurement Case
Backplane
LAN
USB
DIGITAL I/O
BOARD
LINE POWER FILTER
PERIPHERAL'S
24V
POWER 1
DMC 2
SUPPORT BOARD
POL 2
DATA
POL 2, 24V
POWER
BACKPLANE
BOARD
RESET
24V
POWER 2
A/C
OUT
FRONT USB PORT BOARD
DISPLAY
BOARD
48VDC
24VDC
A/C
OUT
FRONT PANEL
SWITCH
A/C IN
GROUND TAB
SYSTEM
CONTROLLER BOARD
"B"
"A"
-
iQ Series Common Platform
FRONT PANEL
LEDS
TOUCH SCREEN LCD DISPLAY
+48V POWER SUPPLY
(Only if 48V is required)
+24V POWER SUPPLY
System Description
Common Electronics
Figure 8–1. Common System Interconnect Diagram
Thermo Scientific
Thermo Scientific
PMT
Fan
Heater
Sample
Sol
Pump
Fan
Sensor
TEC
Zero Sol
Span Sol
Measurement Case
Backplane
24V
Fan
POL 1
DATA
Step Pol
Module 1
NO-NOx
Mode Sol
42 PMT Cooler DMC
POL 1, 24V
POWER
Flow Switch
O3
Lag Vol
Mode Sol
Step Pol
Module 2
42 Ozonator DMC
Sensor
42 Converter DMC
Heater
Flow Pressure
DMC
DMC 1
iQ Series 42 LS
System Description
Common Electronics
Figure 8–2. 42iQLS System Interconnect Diagram
42iQ Low Source Instruction Manual
8-5
System Description
Common Electronics
Power Supply
Front Panel
I/O and
Communication
Components
All electronics operate from a universal VDC supply, which is capable of
auto-sensing the input voltage and working over all specified operating
ranges. The 42iQLS contains a 24 VDC channel for most electronics
operation, including the pump and fan, and a 48 VDC channel dedicated
specifically for optical bench heating.
Front panel electronic components include the touch screen display, the on
off switch, and two indicator LEDs for power and alarm status, as
described in operational detail in Chapter 2, “Installation and Setup”.
The iQ series instruments provide a number of methods for
communicating the instrument results to the operator or external
equipment. Every iQ series instrument includes a front panel display, 3
USB ports, and one Ethernet data port as standard equipment.
In addition, optional RS-232/485, analog I/O, and digital I/O ports are
available to provide data to external systems as described in Chapter 9,
“Optional Equipment”. The front panel GUI allows the operator to
configure these output communication channels as described in Chapter 3,
“Operation”.
8-6
System Controller
Board
The System Controller Board (SCB) contains the main processor, power
supplies, and a sub-processor, and serves as the communication hub for the
instrument. The SCB receives operator inputs from the front panel GUI
and/or over optional I/O connections on the rear panel. The SCB sends
commands to the other boards to control the functions of the instrument
and to collect measurement and diagnostic information. The SCB outputs
instrument status and measurement data to the GUI, Ethernet/USB, and
to the optional rear-panel I/O. The SCB plugs into the backplane via a
single connector and has physical retainers to secure placement.
Backplane Board
The backplane board provides the routing and conditioning for +24 VDC
(optional +48 VDC) and RS-485 communications within the instrument.
It hosts the System Controller Board (SCB) and Peripherals Support Board
(PSB) via direct plug ins, and similarly hosts optional I/O (communication,
analog, and digital) with rear panel interfaces via direct plug in. It has
connections for RS-485 communication with and powering of DMCs and
the STEP POL Module. It additionally routes the front panel display and
driver, external USB and Ethernet.
42iQ Low Source Instruction Manual
Thermo Scientific
System Description
Peripherals Support System
Peripherals
Support System
The peripherals support system operates these additional devices that are
needed, but do not require special feedback control or processing. These
components are connected to a Peripherals Support Board (PSB).
Fan
The chassis fan provides air cooling of the active electronic components.
STEP POL Board
Sample Pump
Internal vacuum pump for generating air/sample through the instrument.
Mode Solenoid
The mode solenoid valve switches analyzer operation between the NO
mode and NOx mode. It routes the ambient air sample either through the
reaction chamber (NO mode) or through the NO2-to-NO converter and
then to the reaction chamber (NOx mode).
Solenoid Valve
Panel
Optional solenoid valves for switching between sample, zero, and span
gases, and other optional components.
Flow/Pressure
DMC
Thermo Scientific
The STEP POL board provides high/low outputs for continuous operation
or on/off states. The STEP POL board contains the basic circuitry to
provide a programmable load to passive devices, either continuously, or on
user or automated command. In the iQ Series instruments, the pump,
solenoids, etc., are controlled off of the STEP POL board from commands
generated via the PSB.
The flow pressure DMC performs the pressure measurements that assure
proper flow regulation, and also for the sample pressure within the reaction
chamber. It is coupled with a standard restricting capillary for flow when
the downstream pump is operating: Upstream pressure is ambient, while
downstream pressure allows determination of flow. A single PCBA with
microprocessor provides the active controls for the pressure measurements,
performs flow determination, and generates registers that interact with the
higher level system controls.
42iQ Low Source Instruction Manual
8-7
System Description
Firmware
Firmware
Like the hardware, the firmware is modular and located within
microprocessors distributed throughout the instrument. In the 42iQLS,
microprocessors containing firmware are located as follows:
●
Reaction Chamber/PMT DMC
●
Ozonator DMC
●
Flow/Pressure DMC
●
Peripherals Support Board
●
Optional I/O (Communications, Digital, and Analog)
●
Optional Oxygen Sensor
The firmware contains the active controls for their application, as well as
self-identification and configuration for “plug and play” style operation.
Each are associated with specific registers of two types:
●
Modbus registers that are communicated from each microprocessor to
the System Controller Board (SCB) via internal RS-485
●
SNMP registers that are maintained in the software and SCB for health
and data processing computation
The Modbus communication system operates on 1 second intervals.
Within those intervals, data treatment like integration (whether analog or
digital) and servo control, are embedded in the module firmware. The SCB
receives the 1 second updates for higher level “software” processing and
control via SNMP registers, some of which is interfaced with the front
panel Graphical User Interface (GUI).
In addition to the operating registers, the 42iQLS stores a historical data
log in a MySQL database. The memory is provided on the same uSD card
where the operating software resides, for which there is capability to store
up to a year of data at 1 minute intervals. Chapter 3, “Operation” describes
how this database is accessed and used including external memory
downloads.
Oxygen Sensor
(optional)
8-8
42iQ Low Source Instruction Manual
The 42iQLS can be configured with an optional DMC based Oxygen (O2)
Sensor. This sensor is a paramagnetic sensor for O2 concentration
measurement and CO correction. This option allows the user to correct the
NO, NO2, and NOx readings for the amount of oxygen in the sample.
Selectable O2 concentrations can be used as the correction factor.
Thermo Scientific
Chapter 9
Optional Equipment
The 42iQLS is available with the following options:
Connecting
External Devices
Several components are available for connecting external devices.
These connection options consist of three plug-in boards:
●
Communication Board
●
Analog I/O Board
●
Digital I/O Board
Figure 9–1. I/O Expansion Replacement Boards
Thermo Scientific
42iQ Low Source Instruction Manual 9-1
Optional Equipment
Connecting External Devices
Communication
Board
RS-232/RS-485 Port
The communication board consists of:
●
RS-232/485 Port
●
RS-485 External Accessory Port
The RS-232/RS-485 port uses a 9-pin serial connector with a bi-directional
serial interface that can be configured for either RS-232 or RS-485
communication.
Figure 9–2. RS-232/RS-485 Port
Table 9–1. RS-232/RS-485 Port Terminal Assignment
9-2
42iQ Low Source Instruction Manual
Terminal Number
Signal Name
1
No Connect
2
RX/RS485_RX_P
3
TX/RS485_TX_N
4
No Connect
5
GND
6
No Connect
7
RTS/RS485_TX_P
8
CTS/RS485_RX_N
9
No Connect
Thermo Scientific
Optional Equipment
Connecting External Devices
RS-485 External
Accessory Port
The RS-485 external accessory port uses a 15-pin serial connector for
communication with external smart devices.
Figure 9–3. RS-485 External Accessory Port
Table 9–2. RS-485 External Accessory Port Terminal Assignment
Thermo Scientific
Terminal Number
Signal Name
1
EXT_RS485_RX_N
2
EXT_RS485_RX_P
3
+5V (Fused @0.4A)
4
+5V (Fused @0.4A)
5
+5V (Fused @0.4A)
6
GND
7
GND
8
GND
9
EXT_RS485_TX_N
10
EXT_RS485_TX_P
11
+24V (Fused @0.4A)
12
+24V (Fused @0.4A)
13
+24V (Fused @0.4A)
14
+24V (Fused @0.4A)
15
+24V (Fused @0.4A)
42iQ Low Source Instruction Manual
9-3
Optional Equipment
Connecting External Devices
Analog I/O Board
Analog Voltage Inputs
The Analog I/O Board consists of:
●
4 Isolated Analog Voltage Inputs, Input Voltage Range: 0–10 V
●
6 Isolated Analog Voltage Outputs, Three Ranges: 0–1.0 V, 0–5.0 V,
0–10 V
●
6 Isolated Analog Current Outputs, Two Ranges: 0mA–20mA, 4mA–
20mA
Table 9–3 lists the analog voltage inputs are used to monitor four external
0–10V signals.
Figure 9–4. Analog Voltage Inputs
Table 9–3. Analog Voltage Inputs Assignment
9-4
42iQ Low Source Instruction Manual
Terminal Number
Signal Name
1
Analog In 1
2
Analog GND
3
Analog In 2
4
Analog GND
5
Analog In 3
6
Analog GND
7
Analog In 4
8
Analog GND
Thermo Scientific
Optional Equipment
Connecting External Devices
Analog Voltage Outputs
There are six globally isolated, 16-bit, Analog Output channels, each with a
Voltage Output, a Current Output and a common Return (isolated
ground). The Analog Outputs are configured through the software control
registers to select Voltage Output ranges 0–1 V, 0–5 V or 0–10 V, as well
as Current Output ranges 0–20 mA or 4–20 mA. The maximum allowable
load for each Current Output is 1000 Ω. All Voltage Outputs and Current
Outputs are continuously monitored separately for accuracy.
The Analog Outputs may be used to control and report parameters
pertinent to the analyzers’ measured functions.
Figure 9–5. Analog Voltage and Current
Thermo Scientific
42iQ Low Source Instruction Manual
9-5
Optional Equipment
Connecting External Devices
Table 9–4. Analog Voltage and Current Assignment
Analog Output
Calibration
Terminal Number
Signal Name
1
Current Out 1
2
Voltage Out 1
3
C/V Return 1
4
Current Out 2
5
Voltage Out 2
6
C/V Return 2
7
Current Out 3
8
Voltage Out 3
9
C/V Return 3
10
Current Out 4
11
Voltage Out 4
12
C/V Return 4
13
Current Out 5
14
Voltage Out 5
15
C/V Return 5
16
Current Out 6
17
Voltage Out 6
18
C/V Return 6
The iQ series instruments provide for the ability to calibrate the analog
outputs (both voltage and current) of the instruments. The basic procedure
for both voltage and current are the same using the following procedure:
●
Complete the connections of the recording device to the desired analog
output channel. (See page 9-5 for the channel information).
●
Calibrate the output channel low level.
Note When calibrating the current output when using the 0-20 mA
scale, the low level will be set to 4 mA due to the inability to adjust the
actual current output to below zero. ▲
●
9-6
42iQ Low Source Instruction Manual
Calibrate the output channel full scale.
Thermo Scientific
Optional Equipment
Connecting External Devices
Analog Output Zero
Calibration
Use the following procedure to calibrate the output channel to low level.
This analog output calibration procedure reflects the zero calibration for
analog output voltage for demonstration purposes. To calibrate the 4 mA
current calibration, follow the same procedure, by selecting the 4 mA
current calibration option.
Note This adjustment should only be performed by an instrument service
technician. ▲
1. From the Home screen, choose Settings>Communications>Analog
I/O>Analog Out Calibration.
2. Depending on the output type being used, select either Analog Out
Zero Calibration (Voltage) or Analog Out 4.000 mA Calibration
(Current).
3. A confirmation screen is presented. Select Continue to proceed with
the calibration or Return to Previous Screen.
Thermo Scientific
42iQ Low Source Instruction Manual
9-7
Optional Equipment
Connecting External Devices
4. There are six columns for each of the six available output channels:
●
●
●
●
Output (V): Displays the actual output level at the terminal of the
analog output board. For analog voltage, this value will default at zero.
For analog current, this value will default at 4 mA.
Decrease and Decrease : Decreases the output by coarse or fine
amounts
Increase and Increase : Increases the output by coarse and fine
amounts.
Commit: Accepts the changes to the analog output levels.
5. For the desired analog output channel, increase or decrease the output
until the reading on the recording device indicates the proper value.
6. After making changes to the output levels, the commit button will turn
green. To accept the changes, press the Commit button. To revert to
the previous values, press the back button to return to the previous
analog output calibration screen.
9-8
42iQ Low Source Instruction Manual
Thermo Scientific
Optional Equipment
Connecting External Devices
Analog Output Full Scale
Calibration
Use the following procedure to calibrate the output channel to full scale.
This analog output calibration procedure reflects the full scale calibration
for analog output voltage for demonstration purposes. To calibrate the 20
mA current calibration, follow the same procedure, by selecting the 20 mA
current calibration option.
Note This adjustment should only be performed by an instrument service
technician. ▲
1. From the Home screen, choose Settings>Communications>Analog
I/O>Analog Output Calibration.
2. Depending on the output type being used, select either Analog Out
Full Scale Calibration (Voltage) or Analog Out 20.000 mA Calibration
(Current).
3. A confirmation screen is presented. Select Continue to proceed with
the calibration or Return to Previous Screen.
Thermo Scientific
42iQ Low Source Instruction Manual
9-9
Optional Equipment
Connecting External Devices
4. There are six columns for each of the six available output channels:
●
●
●
●
Output (V): Displays the actual output level at the terminal of the
analog output board. For analog voltage, this value will default at the
setting of the output channel, 1, 5, or 10 V. For analog current, this
value will default at 20 mA.
Decrease and Decrease : Decreases the output by coarse or fine
amounts
Increase and Increase : Increases the output by coarse and fine
amounts.
Commit: Accepts the changes to the analog output levels.
5. For the desired analog output channel, increase or decrease the output
until the reading on the recording device indicates the proper value.
6. After making changes to the output levels, the commit button will turn
green. To accept the changes, press the Commit button. To revert to
the previous values, press the back button to return to the previous
analog output calibration screen.
9-10
42iQ Low Source Instruction Manual
Thermo Scientific
Optional Equipment
Connecting External Devices
Digital I/O Board
Digital Inputs
The digital I/O board consists of:
●
16 Digital Inputs (18 pin connector)
●
10 Digital Relay Switches (20 pin connector)
●
8 Valve Driver Outputs (16 pin connector)
The digital inputs are TTL (3 V or 5 V) compatible and are pulled high
within the instrument. The active state can be user defined in firmware.
●
Logic Low Threshold: 0.8 V
●
Logic High Threshold: 2.0 V
●
Absolute allowable input voltages: -0.5 to 5.5 V
Figure 9–6. Digital Inputs
Thermo Scientific
42iQ Low Source Instruction Manual
9-11
Optional Equipment
Connecting External Devices
Table 9–5. Digital Inputs Terminal Assignment
Terminal Number
Signal Name
COMMON
1
Digital In 1
2
Digital In 2
3
Digital In 3
4
Digital In 4
5
Digital In 5
6
Digital In 6
7
Digital In 7
8
Digital In 8
9
Digital In 9
10
Digital In 10
11
Digital In 11
12
Digital In 12
13
Digital In 13
14
Digital In 14
15
Digital In 15
16
Digital In 16
COMMON
9-12
42iQ Low Source Instruction Manual
Thermo Scientific
Optional Equipment
Connecting External Devices
Digital Relay Switches
Table 9–6 lists the digital relay switches.
●
Maximum Voltage: 300 VDC
●
Maximum Current: 500 mA
●
Fuse: 800 mA
Figure 9–7. Digital Relay Switches
Thermo Scientific
42iQ Low Source Instruction Manual
9-13
Optional Equipment
Connecting External Devices
Table 9–6. Digital Relay Switch Assignment
9-14
42iQ Low Source Instruction Manual
Terminal Number
Signal Name
1A
Relay 1A
1B
Relay 1B
2A
Relay 2A
2B
Relay 2B
3A
Relay 3A
3B
Relay 3B
4A
Relay 4A
4B
Relay 4B
5A
Relay 5A
5B
Relay 5B
6A
Relay 6A
6B
Relay 6B
7A
Relay 7A
7B
Relay 7B
8A
Relay 8A
8B
Relay 8B
9A
Relay 9A
9B
Relay 9B
10A
Relay 10A
10B
Relay 10B
Thermo Scientific
Optional Equipment
Connecting External Devices
Valve Driver Outputs
Table 9–7 lists the valve driver outputs.
●
Actual Output Voltage: 2224 VDC
●
Maximum Current: 300 mA
●
Both positive and negative outputs are protected from over voltage and
over current by 500 mA fuses.
Figure 9–8. Valve Driver Outputs
Thermo Scientific
42iQ Low Source Instruction Manual
9-15
Optional Equipment
Connecting External Devices
Table 9–7. Valve Driver Outputs Assignment
Terminal Number
Signal Name
1+
Valve Drive 1+
1-
Valve Drive 1-
2+
Valve Drive 2+
2-
Valve Drive 2-
3+
Valve Drive 3+
3-
Valve Drive 3-
4+
Valve Drive 4+
4-
Valve Drive 4-
5+
Valve Drive 5+
5-
Valve Drive 5-
6+
Valve Drive 6+
6-
Valve Drive 6-
7+
Valve Drive 7+
7-
Valve Drive 7-
8+
Valve Drive 8+
8-
Valve Drive 8-
Note Intended for 24 V valves. These outputs will also drive any DC load
of 2224 VDC, up to 300 mA. ▲
9-16
42iQ Low Source Instruction Manual
Thermo Scientific
Optional Equipment
Internal Zero/Span and Sample Valves
Internal Zero/Span
and Sample Valves
With the zero/span assembly option, a source of span gas is connected to
the SPAN port and a source of zero air is connected to the ZERO IN port
as shown in Figure 9–9. Zero in and span gas should be supplied at
atmospheric pressure. It may be necessary to use an atmospheric dump
bypass plumbing arrangement to accomplish this.
For more information, refer to the “Installation and Setup” chapter and the
“Operation” chapter.
Figure 9–9. Flow Diagram, Zero/Span Option
Thermo Scientific
42iQ Low Source Instruction Manual
9-17
Optional Equipment
Internal Oxygen (O2) Sensor
Internal Oxygen
(O2) Sensor
The Internal Oxygen (O2) Sensor option provides a paramagnetic sensor
for O2 concentration measurement and NO-NO2-NOx correction. This
option allows the user to correct the NOx readings for the amount of
oxygen in the sample. Selectable O2 concentrations can be used as the
correction factor.
Figure 9–10 shows how this option is integrated with the 42iQLS.
Figure 9–10. 42iQLS Flow Schematic with Internal O2 Sensor
9-18
42iQ Low Source Instruction Manual
Thermo Scientific
Optional Equipment
NO2-to-NO Converter
NO2-to-NO
Converter
The 42iQLS includes a stainless steel NO2-to-NO converter as standard
equipment. A Molybdenum converter is available as an option.
PTFE Particulate
Filter
A 5-10 micron pore size, two-inch diameter PTFE element is available for
the 42iQLS. This filter should be installed just prior to the SAMPLE
bulkhead. When using a filter, all calibrations and span checks must be
performed through the filter.
Ozone
Particulate Filter
The ozone particulate filter minimizes the potential for contamination of
the capillary and reaction chamber by trapping any particulate matter
before passing through the capillary and reaction chamber.
Thermo Scientific
42iQ Low Source Instruction Manual
9-19
Appendix A
Safety, Warranty, and WEEE
Safety
Safety and
Equipment Damage
Alerts
Review the following information carefully before using the instrument.
This manual provides specific information on how to operate the
instrument, however if the instrument is used in a manner not specified by
the manufacturer, the protection provided by the equipment may be
impaired.
This manual contains important information to alert you to potential safety
hazards and risks of equipment damage. Refer to the following types of
alerts you may see in this manual.
Safety and Equipment Damage Alert Descriptions
Description
Alert
A hazard is present that will result in death or serious
personal injury if the warning is ignored. ▲
A hazard is present or an unsafe practice can result in
serious personal injury if the warning is ignored. ▲
The hazard or unsafe practice could result in minor to
moderate personal injury if the warning is ignored. ▲
Equipment Damage
The hazard or unsafe practice could result in property
damage if the warning is ignored. ▲
Safety and Equipment Damage Alerts in this Manual
Description
Alert
If the equipment is operated in a manner not specified by
the manufacturer, the protection provided by the equipment
may be impaired. ▲
The service procedures in this manual are restricted to
qualified service personnel only. ▲
Equipment Damage
Do not attempt to lift the analyzer by the cover or other
external fittings. ▲
This adjustment should only be performed by an instrument
service technician. ▲
Thermo Scientific
42iQ Low Source Instruction Manual
A-1
Safety, Warranty, and WEEE
Warranty
Warranty
Seller warrants that the Products will operate or perform substantially in
conformance with Seller's published specifications and be free from defects
in material and workmanship, when subjected to normal, proper and
intended usage by properly trained personnel, for the period of time set
forth in the product documentation, published specifications or package
inserts. If a period of time is not specified in Seller’s product
documentation, published specifications or package inserts, the warranty
period shall be one (1) year from the date of shipment to Buyer for
equipment and ninety (90) days for all other products (the "Warranty
Period"). Seller agrees during the Warranty Period, to repair or replace, at
Seller's option, defective Products so as to cause the same to operate in
substantial conformance with said published specifications; provided that
(a) Buyer shall promptly notify Seller in writing upon the discovery of any
defect, which notice shall include the product model and serial number (if
applicable) and details of the warranty claim; (b) after Seller’s review, Seller
will provide Buyer with service data and/or a Return Material
Authorization (“RMA”), which may include biohazard decontamination
procedures and other product-specific handling instructions; and (c) then,
if applicable, Buyer may return the defective Products to Seller with all
costs prepaid by Buyer. Replacement parts may be new or refurbished, at
the election of Seller. All replaced parts shall become the property of Seller.
Shipment to Buyer of repaired or replacement Products shall be made in
accordance with the Delivery provisions of the Seller’s Terms and
Conditions of Sale. Consumables, including but not limited to lamps,
fuses, batteries, bulbs and other such expendable items, are expressly
excluded from the warranty under this warranty.
Notwithstanding the foregoing, Products supplied by Seller that are
obtained by Seller from an original manufacturer or third party supplier are
not warranted by Seller, but Seller agrees to assign to Buyer any warranty
rights in such Product that Seller may have from the original manufacturer
or third party supplier, to the extent such assignment is allowed by such
original manufacturer or third party supplier.
In no event shall Seller have any obligation to make repairs, replacements
or corrections required, in whole or in part, as the result of (i) normal wear
and tear, (ii) accident, disaster or event of force majeure, (iii) misuse, fault
or negligence of or by Buyer, (iv) use of the Products in a manner for which
they were not designed, (v) causes external to the Products such as, but not
limited to, power failure or electrical power surges, (vi) improper storage
and handling of the Products or (vii) use of the Products in combination
with equipment or software not supplied by Seller. If Seller determines
that Products for which Buyer has requested warranty services are not
covered by the warranty hereunder, Buyer shall pay or reimburse Seller for
all costs of investigating and responding to such request at Seller's then
A-2
42iQ Low Source Instruction Manual
Thermo Scientific
Safety, Warranty, and WEEE
Warranty
prevailing time and materials rates. If Seller provides repair services or
replacement parts that are not covered by the warranty provided in this
warranty, Buyer shall pay Seller therefor at Seller's then prevailing time and
materials rates. ANY INSTALLATION, MAINTENANCE, REPAIR,
SERVICE, RELOCATION OR ALTERATION TO OR OF, OR
OTHER TAMPERING WITH, THE PRODUCTS PERFORMED BY
ANY PERSON OR ENTITY OTHER THAN SELLER WITHOUT
SELLER'S PRIOR WRITTEN APPROVAL, OR ANY USE OF
REPLACEMENT PARTS NOT SUPPLIED BY SELLER, SHALL
IMMEDIATELY VOID AND CANCEL ALL WARRANTIES WITH
RESPECT TO THE AFFECTED PRODUCTS.
THE OBLIGATIONS CREATED BY THIS WARRANTY
STATEMENT TO REPAIR OR REPLACE A DEFECTIVE PRODUCT
SHALL BE THE SOLE REMEDY OF BUYER IN THE EVENT OF A
DEFECTIVE PRODUCT. EXCEPT AS EXPRESSLY PROVIDED IN
THIS WARRANTY STATEMENT, SELLER DISCLAIMS ALL
OTHER WARRANTIES, WHETHER EXPRESS OR IMPLIED, ORAL
OR WRITTEN, WITH RESPECT TO THE PRODUCTS,
INCLUDING WITHOUT LIMITATION ALL IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY
PARTICULAR PURPOSE. SELLER DOES NOT WARRANT THAT
THE PRODUCTS ARE ERROR-FREE OR WILL ACCOMPLISH
ANY PARTICULAR RESULT.
Thermo Scientific
42iQ Low Source Instruction Manual
A-3
Safety, Warranty, and WEEE
WEEE Compliance
WEEE
Compliance
This product is required to comply with the European Union’s Waste
Electrical & Electronic Equipment (WEEE) Directive 2002/96/EC. It is
marked with the following symbol:
Thermo Fisher Scientific has contracted with one or more
recycling/disposal companies in each EU Member State, and this product
should be disposed of or recycled through them. Further information on
Thermo Fisher Scientific’s compliance with these Directives, the recyclers
in your country, and information on Thermo Fisher Scientific products
which may assist the detection of substances subject to the RoHS Directive
are available at: www.thermoscientific.com/WEEERoHS.
WEEE Symbol
The following symbol and description identify the WEEE marking used on
the instrument and in the associated documentation.
Symbol
Description
Marking of electrical and electronic equipment which applies to electrical and
electronic equipment falling under the Directive 2002/96/EC (WEEE) and the
equipment that has been put on the market after 13 August 2005. ▲
A-4
42iQ Low Source Instruction Manual
Thermo Scientific
Appendix B
Quick Reference
List of Figures
Thermo Scientific
Figure 1–1. 42iQ Low Source Front .................................................................... 1-2
Figure 1–2. 42iQLS Flow Schematic ................................................................... 1-4
Figure 1–3. 42iQLS Flow Schematic with Zero Span ......................................... 1-4
Figure 1–4. Bench Mount Assembly (dimensions in inches [mm]) .................... 1-7
Figure 1–5. Rack Mount Assembly (dimensions in inches [mm]) ...................... 1-8
Figure 1–6. Rack Mount Requirements .............................................................. 1-9
Figure 1–7. Rack Requirements Part 2 ............................................................... 1-9
Figure 2–1. Removing the Cover......................................................................... 2-2
Figure 2–2. Installing Feet .................................................................................. 2-3
Figure 2–3. Removing the Front Panel ............................................................... 2-4
Figure 2–4. Installing Ears and Handles ............................................................. 2-5
Figure 2–5. 42iQ Low Source Rear Panel ........................................................... 2-7
Figure 2–6. Atmospheric Dump Bypass Plumbing ............................................. 2-7
Figure 2–7. Front Panel and touch Screen Display ............................................ 2-8
Figure 4–1. GPT System...................................................................................... 4-4
Figure 5–1. Inspecting and Replacing the Capillaries ....................................... 5-3
Figure 5–2. Dual Stage Pump ............................................................................. 5-5
Figure 5–3. Pump Rebuilding .............................................................................. 5-7
Figure 7–1. Properly Grounded Antistatic Wrist Strap ...................................... 7-2
Figure 7–2. 42iQLS Component Layout Top View .............................................. 7-4
Figure 7–3. 42iQLS Component Layout Side View............................................. 7-4
Figure 7–4. Replacing the Fuses......................................................................... 7-5
Figure 7–5. Start with Top Right Corner of Fan Cover ....................................... 7-6
Figure 7–6. Removing the Fan Cover .................................................................. 7-6
Figure 7–7. Unplugging the Fan Cable ............................................................... 7-7
Figure 7–8. Replacing the Fan ............................................................................ 7-8
Figure 7–9. Unplugging the Fan Cable ............................................................... 7-9
Figure 7–10. Unplugging the DMC Cable......................................................... 7-10
Figure 7–11. Unfasten Hardware Front for Measurement Side Removal ....... 7-10
Figure 7–12. Unfasten Hardware Rear for Measurement Side Removal ........ 7-11
Figure 7–13. Replacing the LCD Module .......................................................... 7-12
Figure 7–14. Remove Electrical Cables from LCD ............................................ 7-13
42iQ Low Source Instruction Manual
B-1
Quick Reference
List of Figures
Figure 7–15. I/O Replacement, Arm ................................................................. 7-14
Figure 7–16. I/O Replacement, Remove Board ................................................ 7-14
Figure 7–17. I/O Replacement, Install .............................................................. 7-15
Figure 7–18. I/O Replacement, Close Arm Alignment ..................................... 7-15
Figure 7–19. Replacing the Peripherals Support Board ................................... 7-16
Figure 7–20. Flow Pressure Board, Disconnect DMC Cable ............................ 7-17
Figure 7–21. Flow Pressure Board, Screws ...................................................... 7-18
Figure 7–22. Remove Pump, Disconnect and Unfasten ................................... 7-20
Figure 7–23. Pump Removal, Keyway............................................................... 7-21
Figure 7–24. Pump replacing, Unfasten Screws .............................................. 7-22
Figure 7–25. Removing Power Supply .............................................................. 7-23
Figure 7–26. Replacing Power Supply .............................................................. 7-24
Figure 7–27. Unplug and Unfasten Step POL Board......................................... 7-25
Figure 7–28. Clear Partition Keyway Step POL Board ...................................... 7-26
Figure 7–29. Step POL Board 1 Switch Settings .............................................. 7-27
Figure 7–30. Replace Step POL board pt 2 ....................................................... 7-27
Figure 7–31. Remove PMT Cooler Shroud ........................................................ 7-29
Figure 7–32. Remove DMC PMT Cooler ........................................................... 7-30
Figure 7–33. Remove PMT Cooler Board .......................................................... 7-31
Figure 7–34. Photo Reaction Chamber Cleaning, Electrical ............................. 7-32
Figure 7–35. Photo Reaction Chamber Cleaning, Hardware ............................ 7-33
Figure 7–36. Photo Reaction Chamber Cleaning, Window .............................. 7-34
Figure 7–37. PMT Tube Replace-Elec-Pt1 ........................................................ 7-35
Figure 7–38. Removing the Access Panel, Starting Point ................................ 7-36
Figure 7–39. Access Cover ................................................................................ 7-36
Figure 7–40. PMT Tube Replace-Screws.......................................................... 7-37
Figure 7–41. Converter DMC Assembly Remove ............................................. 7-38
Figure 7–42. Converter Assembly Remove bd .................................................. 7-39
Figure 7–43. Converter Assembly Replace Heater........................................... 7-41
Figure 7–44. HVPS, Electrical ........................................................................... 7-42
Figure 7–45. HVPS Remove .............................................................................. 7-43
Figure 7–46. Replace Ozonator ......................................................................... 7-44
Figure 7–47. Replace Transformer.................................................................... 7-45
Figure 7–48. HPVS Remove Bd ......................................................................... 7-46
Figure 7–49. Flow Switch Remove ................................................................... 7-47
Figure 7–50. Remove Ammonia Scrubber ........................................................ 7-48
Figure 7–51. Replacing the Manifold pt 1 ........................................................ 7-49
Figure 7–52. Replacing the Manifold pt 2 ........................................................ 7-50
Figure 7–53. Replacing the Manifold pt 3 ........................................................ 7-50
Figure 7–54. Mode-Lag-Perm Electrical Connection ........................................ 7-51
B-2
42iQ Low Source Instruction Manual
Thermo Scientific
Quick Reference
List of Tables
Figure 7–55. Mode-Lag-Perm Hardware, Plumbing ......................................... 7-52
Figure 7–56. Oxygen Sensor Removal pt 1 ...................................................... 7-54
Figure 7–57. Oxygen Sensor Removal pt 2 ...................................................... 7-54
Figure 7–58. Oxygen Sensor Removal pt 3 ...................................................... 7-55
Figure 7–59. Oxygen Sensor Removal pt 4 ...................................................... 7-55
Figure 7–60. Replacing the Oxygen Sensor DMC Board ................................. 7-56
Figure 7–61. Replacing the Oxygen Sensor DMC Board pt 2 .......................... 7-57
Figure 7–62. Replacing the Oxygen Sensor Capillary ...................................... 7-58
Figure 7–63. Replacing the Capillary pt 2 ........................................................ 7-59
Figure 7–64. Replacing the Oxygen Sensor ..................................................... 7-60
Figure 7–65. Installing the Oxygen Sensor DMC ............................................. 7-61
Figure 7–66. Oxygen Sensor DMC install pt 2 ................................................. 7-62
Figure 8–1. Common System Interconnect Diagram ......................................... 8-4
Figure 8–2. 42iQLS System Interconnect Diagram ............................................ 8-5
Figure 9–1. I/O Expansion Replacement Boards ................................................ 9-1
Figure 9–2. RS-232/RS-485 Port......................................................................... 9-2
Figure 9–3. RS-485 External Accessory Port ...................................................... 9-3
Figure 9–4. Analog Voltage Inputs ..................................................................... 9-4
Figure 9–5. Analog Voltage and Current ............................................................ 9-5
Figure 9–6. Digital Inputs ................................................................................. 9-11
Figure 9–7. Digital Relay Switches .................................................................. 9-13
Figure 9–8. Valve Driver Outputs ..................................................................... 9-15
Figure 9–9. Flow Diagram, Zero/Span Option.................................................. 9-17
Figure 9–10. 42iQLS Flow Schematic with Internal O2 Sensor........................ 9-18
List of Tables
Thermo Scientific
Table 1–1. 42iQ Low Source Specifications....................................................... 1-5
Table 1–2. 42iQ Low Source Optional Internal Oxygen Sensor Specifications. 1-6
Table 3–1. Data Logging Variables .................................................................. 3-42
Table 3–2. Streaming Data Variables .............................................................. 3-46
Table 4–1. Scrubbing Materials ......................................................................... 4-3
Table 6–1. 42iQLS Troubleshooting Guide ......................................................... 6-1
Table 9–1. RS-232/RS-485 Port Terminal Assignment ...................................... 9-2
Table 9–2. RS-485 External Accessory Port Terminal Assignment ................... 9-3
Table 9–3. Analog Voltage Inputs Assignment .................................................. 9-4
Table 9–4. Analog Voltage and Current Assignment ......................................... 9-6
Table 9–5. Digital Inputs Terminal Assignment ............................................... 9-12
Table 9–6. Digital Relay Switch Assignment ................................................... 9-14
Table 9–7. Valve Driver Outputs Assignment .................................................. 9-16
42iQ Low Source Instruction Manual
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