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Model 42i
Instruction Manual
Chemiluminescence NO-NO2-NOx Analyzer
Part Number 101350-00
25Jul2015
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© 2007 Thermo Fisher Scientific Inc. All rights reserved.
Specifications, terms and pricing are subject to change. Not all products are available in all countries. Please
consult your local sales representative for details.
Thermo Fisher Scientific
Air Quality Instruments
27 Forge Parkway
Franklin, MA 02038
1-508-520-0430
www.thermo.com/aqi
Page 3
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.thermo.com/WEEERoHS.
Thermo Fisher Scientific WEEE Compliance
Page 4
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Reference Method Designation
The Thermo Scientific Model 42i is designated by the United States
Environmental Protection Agency (US EPA) as a Reference Method for the
measurement of ambient concentrations of nitrogen dioxide pursuant with
the requirements defined in the Code of Federal Regulations, Title 40, Part
53.
Designated Reference Method Number: RFNA-1289-074
EPA Designation Date: December 11, 1989 (amended for Model 42i)
The Model 42i Chemiluminescence NO-NO2-NOx Analyzer meets EPA
reference designation requirements when operated with the following:
Range 50 to 1000 ppb
Averaging Time 10 to 300 seconds
Temperature Range 15 to 35 C
Line Voltage 90 to 110 Vac @50/60 Hertz
105 to 125 Vac @50/60 Hertz
210 to 250 Vac @50/60 Hertz
Pressure Compensation ON or OFF
Temperature Compensation ON or OFF
Flow Rate 0.5 to 1 LPM
RS-232/RS-485 Interface
With or without the following options:
Teflon Particulate Filter
Ozone Particulate Filter
Internal Zero/Span and Sample Valves
Ozone Permeation Dryer
Permeation Oven
Rack Mounts
I/O Expansion Board
Thermo Fisher Scientific Reference Method Designation
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About This Manual
This manual provides information about operating, maintaining, and
servicing the analyzer. It also contains important alerts to ensure safe
operation and prevent equipment damage. The manual is organized into
the following chapters and appendixes to provide direct access to specific
operation and service information.
● Chapter 1 “Introduction” provides an overview of product features,
describes the principles of operation, and lists the specifications.
● Chapter 2 “Installation” describes how to unpack, setup, and startup
the analyzer.
● Chapter 3 “Operation” describes the front panel display, the front
panel pushbuttons, and the menu-driven software.
● Chapter 4 “Calibration” provides the procedures for calibrating the
analyzer and describes the required equipment.
● Chapter 5 “Preventive Maintenance” provides maintenance procedures
to ensure reliable and consistent instrument operation.
● Chapter 6 “Troubleshooting” presents guidelines for diagnosing
analyzer failures, isolating faults, and includes recommended actions for
restoring proper operation.
● Chapter 7 “Servicing” presents safety alerts for technicians working on
the analyzer, step-by-step instructions for repairing and replacing
components, and a replacement parts list. It also includes contact
information for product support and technical information.
● Chapter 8 “System Description” describes the function and location of
the system components, provides an overview of the software structure,
and includes a description of the system electronics and input/output
connections.
● Chapter 9 “Optional Equipment” describes the optional equipment
that can be used with this analyzer.
● Appendix A “Warranty” is a copy of the warranty statement.
● Appendix B “C-Link Protocol Commands” provides a description of
the C-Link protocol commands that can be used to remotely control an
analyzer using a host device such as a PC or datalogger.
Thermo Fisher Scientific Model 42i Instruction Manual i
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About This Manual
Safety
● Appendix C “MODBUS Protocol” provides a description of the
MODBUS Protocol Interface and is supported both over RS-232/485
(RTU protocol) as well as TCP/IP over Ethernet.
● Appendix D “Geysitech (Bayern-Hessen) Protocol” provides a
description of the Geysitech (Bayern-Hessen or BH) Protocol Interface
and is supported both over RS-232/485 as well as TCP/IP over
Ethernet.
Safety
Safety and Equipment
Damage Alerts
Review the following safety information carefully before using the analyzer.
This manual provides specific information on how to operate the analyzer,
however, if the analyzer 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
Alert Description
DANGER A hazard is present that could result in death or serious
personal injury if the warning is ignored.
WARNING A hazard or unsafe practice could result in serious
CAUTION A hazard or unsafe practice could result in minor to
personal injury if the warning is ignored.
moderate personal injury if the warning is ignored.
▲
▲
▲
Equipment Damage A hazard or unsafe practice could result in property
damage if the warning is ignored.
▲
ii Model 42i Instruction Manual Thermo Fisher Scientific
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Safety and Equipment Damage Alerts
Safety and Equipment damage Alerts in this Manual
Alert Description
About This Manual
WARNING 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.
▲
The Model 42i is supplied with a three-wire grounding
cord. Under no circumstances should this grounding
system be defeated.
CAUTION If the LCD panel breaks, do not to let the liquid crystal
contact your skin or clothes. If the liquid crystal contacts
▲
your skin or clothes, wash it off immediately using soap
and water.
Equipment Damage Do not attempt to lift the analyzer by the cover or other
external fittings.
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.
This adjustment should only be performed by an
instrument service technician.
Handle all printed circuit boards by the edges only.
Do not remove the panel or frame from the LCD module.
▲
▲
▲
▲
The LCD module polarizing plate is very fragile, handle it
carefully.
▲
Do not wipe the LCD module polarizing plate with a dry
cloth, it may easily scratch the plate.
▲
Do not use Ketonics solvent or aromatic solvent to clean
the LCD module, 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 Fisher Scientific Model 42i Instruction Manual iii
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About This Manual
W
W
FCC Compliance
FCC Compliance
EEE Symbol
Changes or modifications to this unit not expressly approved by the party
responsible for compliance could void the user’s authority to operate the
equipment.
Note This equipment has been tested and found to comply with the limits
for a Class A digital device, pursuant to Part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference when the equipment is operated in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy
and, if not installed and used in accordance with the instruction manual,
may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his own
expense. ▲
The following symbol and description identify the WEEE marking used on
the instrument and in the associated documentation.
Symbol Description
here to Get Help
Marking of electrical and electronic equipment which applies to waste
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.
▲
Service is available from exclusive distributors worldwide. Contact one of
the phone numbers below for product support and technical information
or visit us on the web at www.thermo.com/aqi.
1-866-282-0430 Toll Free
1-508-520-0430 International
iv Model 42i Instruction Manual Thermo Fisher Scientific
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Contents
Chapter 1
Chapter 2
Chapter 3
Introduction ........................................................................................................ 1-1
Principle of Operation ........................................................................ 1-2
Specifications ...................................................................................... 1-3
Installation ......................................................................................................... 2-1
Lifting ................................................................................................. 2-1
Unpacking and Inspection .................................................................. 2-1
Setup Procedure .................................................................................. 2-3
Connecting External Devices .............................................................. 2-5
Terminal Board PCB Assemblies ...................................................... 2-5
I/O Terminal Board ...................................................................... 2-5
D/O Terminal Board .................................................................... 2-7
25-Pin Terminal Board ................................................................. 2-8
Startup ................................................................................................ 2-9
Operation ............................................................................................................ 3-1
Display ................................................................................................ 3-1
Pushbuttons ........................................................................................ 3-2
Soft Keys .......................................................................................... 3-3
Alphanumeric Entry Screen .............................................................. 3-4
Firmware Overview ............................................................................. 3-4
Power-Up Screen ............................................................................. 3-6
Run Screen ....................................................................................... 3-6
Main Menu ...................................................................................... 3-7
Range Menu ....................................................................................... 3-8
Single Range Mode .......................................................................... 3-8
Dual Range Mode ............................................................................ 3-9
Auto Range Mode .......................................................................... 3-11
Gas Units ....................................................................................... 3-13
NO, NO2, and NOx Ranges ........................................................... 3-13
Set Custom Ranges ........................................................................ 3-15
Custom Ranges ........................................................................... 3-16
Averaging Time ................................................................................. 3-16
Calibration Factors Menu ................................................................. 3-17
NO and NOx Backgrounds ............................................................ 3-17
NO, NO2, and NOx Coefficients ................................................... 3-19
Reset User Calibration Defaults ..................................................... 3-19
Calibration Menu ............................................................................. 3-20
Calibrate NO and NOx Backgrounds ............................................. 3-20
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Calibrate NO, NO2, and NOx Coefficients .................................... 3-21
Zero/Span Check ........................................................................... 3-21
Next Time .................................................................................. 3-22
Period Hours ............................................................................... 3-22
Total Duration Hour .................................................................. 3-23
Zero/Span/Purge Duration Minutes ........................................... 3-23
Zero/Span Averaging Time ......................................................... 3-23
Zero/Span Calibration Reset ....................................................... 3-24
Zero/Span Ratio .......................................................................... 3-24
Instrument Controls Menu ............................................................... 3-24
Ozonator ........................................................................................ 3-25
PMT Supply .................................................................................. 3-26
Auto/Manual Mode ....................................................................... 3-26
Datalogging Settings ...................................................................... 3-26
Select Srec/Lrec ........................................................................... 3-27
View Logged Data ....................................................................... 3-28
Number of Records ..................................................................... 3-28
Date and Time ............................................................................ 3-28
Erase Log .................................................................................... 3-29
Select Content ............................................................................. 3-29
Choose Field Data ....................................................................... 3-30
Concentrations ............................................................................ 3-30
Other Measurements ................................................................... 3-31
Analog Inputs .............................................................................. 3-32
Commit Content ........................................................................ 3-32
Reset to Default Content ............................................................ 3-32
Configure Datalogging ................................................................ 3-33
Logging Period Min .................................................................... 3-33
Memory Allocation Percent ......................................................... 3-33
Data Treatment .......................................................................... 3-34
Communication Settings ................................................................ 3-34
Serial Settings .............................................................................. 3-35
Baud Rate ................................................................................... 3-35
Data Bits ..................................................................................... 3-35
Parity .......................................................................................... 3-36
Stop Bits ..................................................................................... 3-36
RS-232/RS-485 Selection ............................................................ 3-36
Instrument ID ............................................................................. 3-37
Communication Protocol ............................................................ 3-37
Streaming Data Configuration .................................................... 3-38
Streaming Data Interval .............................................................. 3-38
Choose Stream Data ................................................................... 3-39
Concentrations ............................................................................ 3-39
Other Measurements ................................................................... 3-40
Analog Inputs .............................................................................. 3-40
TCP/IP Settings .......................................................................... 3-41
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Use DHCP ................................................................................. 3-41
IP Address ................................................................................... 3-42
Netmask ...................................................................................... 3-42
Default Gateway ......................................................................... 3-42
Host Name ................................................................................. 3-43
Network Time Protocol Server .................................................... 3-43
I/O Configuration .......................................................................... 3-43
Output Relay Settings ................................................................. 3-44
Logic State .................................................................................. 3-44
Instrument State ......................................................................... 3-45
Alarms ......................................................................................... 3-45
Non-Alarm ................................................................................. 3-46
Digital Input Settings .................................................................. 3-47
Logic State .................................................................................. 3-47
Instrument Action ....................................................................... 3-48
Analog Output Configuration (Select Channel) .......................... 3-48
Allow Over/Under Range ............................................................ 3-48
Analog Output Configuration (Select Action) ............................. 3-49
Select Range ................................................................................ 3-49
Minimum and Maximum Value ................................................. 3-50
Choose Signal to Output ............................................................ 3-51
Analog Input Configuration ........................................................ 3-53
Descriptor ................................................................................... 3-53
Units ........................................................................................... 3-54
Decimal Places ............................................................................ 3-54
Number of Table Points .............................................................. 3-54
Table Point ................................................................................. 3-55
Volts ........................................................................................... 3-55
User Value .................................................................................. 3-56
Temperature Compensation ........................................................... 3-56
Pressure Compensation .................................................................. 3-57
Screen Contrast .............................................................................. 3-57
Service Mode ................................................................................. 3-58
Date/Time ..................................................................................... 3-58
Timezone ....................................................................................... 3-59
Diagnostics Menu ............................................................................. 3-59
Program Version ............................................................................ 3-60
Voltages ......................................................................................... 3-60
Motherboard Voltages ................................................................. 3-61
Interface Board Voltages ............................................................. 3-61
I/O Board Voltages ..................................................................... 3-61
Temperatures ................................................................................. 3-62
Pressure .......................................................................................... 3-62
Flow ............................................................................................... 3-62
Analog Input Readings ................................................................... 3-63
Analog Input Voltages .................................................................... 3-63
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Digital Inputs ................................................................................. 3-63
Relay States .................................................................................... 3-64
Test Analog Outputs ...................................................................... 3-64
Set Analog Outputs ..................................................................... 3-64
Instrument Configuration .............................................................. 3-65
Contact Information ...................................................................... 3-65
Alarms Menu .................................................................................... 3-66
Internal Temperature ..................................................................... 3-67
Min and Max Internal Temperature Limits ................................. 3-67
Chamber Temperature ................................................................... 3-67
Min and Max Chamber Temperature Limits .............................. 3-68
Cooler Temperature ....................................................................... 3-68
Min and Max Cooler Temperature Limits .................................. 3-68
Converter Temperature .................................................................. 3-69
Min and Max Converter Temperature Limits ............................. 3-69
Permeation Oven Gas Temperature ............................................... 3-69
Min and Max Permeation Oven Temperature Limits .................. 3-70
Pressure .......................................................................................... 3-70
Min and Max Pressure Limits ..................................................... 3-71
Flow ............................................................................................... 3-71
Min and Max Flow Limits .......................................................... 3-71
Ozonator Flow ............................................................................... 3-72
Zero and Span Check ..................................................................... 3-72
Max Zero and Span Check Offset ............................................... 3-72
Zero and Span Auto Calibration .................................................... 3-73
NO, NO2, and NOx Concentration ............................................... 3-73
Min and Max NO, NO2, and NOx Concentration Limits ........... 3-74
Min Trigger ................................................................................ 3-74
External Alarms .............................................................................. 3-74
Service Menu .................................................................................... 3-75
PMT Voltage Adjustment .............................................................. 3-75
Range Mode Select ......................................................................... 3-76
Converter Set Temperature ............................................................ 3-76
Pressure Calibration ....................................................................... 3-77
Calibrate Pressure Zero ............................................................... 3-77
Calibrate Pressure Span ............................................................... 3-78
Restore Default Pressure Calibration ........................................... 3-78
Flow Calibration ............................................................................ 3-78
Calibrate Flow Zero .................................................................... 3-79
Calibrate Flow Span .................................................................... 3-79
Restore Default Flow Calibration ................................................ 3-80
Input Board Calibration ................................................................. 3-80
Manual Input Calibration ........................................................... 3-81
Automatic Input Calibration ....................................................... 3-81
Input Frequency Display ............................................................. 3-82
Temperature Calibration ................................................................ 3-82
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Analog Output Calibration ............................................................ 3-83
Analog Output Calibrate Zero .................................................... 3-84
Analog Output Calibrate Full-Scale ............................................ 3-84
Analog Input Calibration ............................................................... 3-84
Analog Input Calibrate Zero ....................................................... 3-85
Analog Input Calibrate Full-Scale ............................................... 3-85
Permeation Oven Settings .............................................................. 3-86
Calibrate Gas Thermistor ............................................................ 3-86
Water Bath .................................................................................. 3-87
Resistor ....................................................................................... 3-87
Calibrate Oven Thermistor ......................................................... 3-87
Permeation Oven Selection ......................................................... 3-88
Factory Calibrate Gas Thermistor ............................................... 3-88
Low and High Points .................................................................. 3-88
Set Defaults ................................................................................. 3-89
Factory Calibrate Oven Thermistor ............................................. 3-89
Low and High Points .................................................................. 3-89
Set Defaults ................................................................................. 3-90
Ozonator Safety ............................................................................. 3-90
Extended Ranges ............................................................................ 3-91
Dilution Ratio ................................................................................ 3-91
Display Pixel Test .......................................................................... 3-91
Restore User Defaults ..................................................................... 3-92
Password Menu ................................................................................. 3-92
Set Password .................................................................................. 3-93
Lock Instrument ............................................................................ 3-93
Lock/Unlock and Local/Remote Operation ................................ 3-93
Change Password ........................................................................... 3-94
Remove Password ........................................................................... 3-94
Unlock Instrument ......................................................................... 3-94
Chapter 4
Calibration .......................................................................................................... 4-1
Equipment Required ........................................................................... 4-1
Zero Gas Generator.......................................................................... 4-2
Compression ................................................................................. 4-2
Drying .......................................................................................... 4-2
Oxidation ...................................................................................... 4-2
Scrubbing ...................................................................................... 4-2
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 .......................................................................... 4-4
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Reagents ........................................................................................... 4-4
NO Concentration Standard ......................................................... 4-4
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 ................................. 4-6
Pre-Calibration ................................................................................... 4-8
Calibration .......................................................................................... 4-9
Connect GPT Apparatus to the Analyzer ......................................... 4-9
Adjust Instrument Gain ................................................................. 4-10
Set NO and NOx Background to Zero ........................................ 4-10
Calibrate the NO Channel to the NO Calibration Gas ............... 4-11
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 .... 4-16
Calibration in Dual Range and Auto Range Mode ............................ 4-16
Set NO and NOx Background Readings to Zero ............................ 4-16
Calibrate Low NO ......................................................................... 4-17
Calibrate Low NOx ........................................................................ 4-17
Calibrate Low NO2 ........................................................................ 4-18
Calibrate High NO ........................................................................ 4-19
Calibrate High NOx ....................................................................... 4-19
Calibrate High NO2 ....................................................................... 4-19
Zero and Span Check ........................................................................ 4-20
Chapter 5
Chapter 6
Chapter 7
Preventive Maintenance ................................................................................. 5-1
Safety Precautions ............................................................................... 5-1
Replacement Parts ............................................................................... 5-2
Cleaning the Outside Case .................................................................. 5-2
Ozonator Air Feed Drying Column Replacement ............................... 5-2
Capillaries Inspection and Replacement .............................................. 5-2
Thermoelectric Cooler Fins Inspection and Cleaning .......................... 5-4
Fan Filters Inspection and Cleaning .................................................... 5-4
Pump Rebuilding ................................................................................ 5-5
Troubleshooting ................................................................................................. 6-1
Safety Precautions ............................................................................... 6-1
Troubleshooting Guides ...................................................................... 6-1
Board-Level Connection Diagrams ..................................................... 6-6
Connector Pin Descriptions ................................................................ 6-8
Service Locations ............................................................................... 6-21
Servicing ............................................................................................................. 7-1
Safety Precautions ............................................................................... 7-2
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Firmware Updates ............................................................................... 7-4
Accessing the Service Mode ................................................................. 7-4
Replacement Parts List ........................................................................ 7-4
Cable List ............................................................................................ 7-6
External Device Connection Components .......................................... 7-6
Removing the Measurement Bench and Lowering the Partition Panel 7-8
Pump Replacement ............................................................................. 7-9
Fan/Filter Replacement ..................................................................... 7-10
PMT Cooler and Reaction Chamber Assembly Replacement ............ 7-11
Photomultiplier Tube Replacement .................................................. 7-13
PMT High Voltage Power Supply Replacement ................................ 7-14
PMT Voltage Adjustment ................................................................. 7-16
Reaction Chamber Cleaning or Removal .......................................... 7-17
NO2-to-NO Converter Replacement ................................................ 7-18
Solenoid Valve Replacement ............................................................. 7-20
Ozonator Assembly Replacement ...................................................... 7-21
Ozonator Transformer Replacement ................................................. 7-23
Input Board Replacement ................................................................. 7-23
Input Board Calibration .................................................................... 7-25
DC Power Supply Replacement ........................................................ 7-25
Analog Output Testing ..................................................................... 7-26
Analog Output Calibration ............................................................... 7-29
Analog Input Calibration .................................................................. 7-30
Calibrating the Input Channels to Zero Volts ................................ 7-30
Calibrating the Input Channels to Full-Scale ................................. 7-30
Pressure Transducer Assembly Replacement ...................................... 7-31
Pressure Transducer Calibration ........................................................ 7-32
Temperature Control Board Replacement ......................................... 7-34
Ambient Temperature Calibration .................................................... 7-35
Fuse Replacement ............................................................................. 7-36
Scrubber Replacement ....................................................................... 7-36
I/O Expansion Board (Optional) Replacement ................................. 7-37
Digital Output Board Replacement ................................................... 7-39
Motherboard Replacement ................................................................ 7-39
Measurement Interface Board Replacement ...................................... 7-40
Flow Transducer Replacement .......................................................... 7-41
Flow Transducer Calibration ............................................................. 7-42
Front Panel Board Replacement ........................................................ 7-44
LCD Module Replacement ............................................................... 7-45
Service Locations ............................................................................... 7-46
Chapter 8
System Description .......................................................................................... 8-1
Hardware ............................................................................................ 8-1
NO2-to-NO Converter ....................................................................... 8-2
Mode Solenoid ................................................................................. 8-2
Reaction Chamber .............................................................................. 8-2
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Optical Filter .................................................................................... 8-3
Pressure Transducer ......................................................................... 8-3
Sample Flow Sensor ......................................................................... 8-3
Ozonator ............................................................................................. 8-3
Ozonator Flow Switch ..................................................................... 8-3
Photomultiplier Tube ......................................................................... 8-3
Photomultiplier Tube Cooler .............................................................. 8-3
Pump .................................................................................................. 8-3
Sample Capillary .............................................................................. 8-3
Dry Air Capillary ............................................................................. 8-4
Software .............................................................................................. 8-4
Instrument Control .......................................................................... 8-4
Monitoring Signals ........................................................................... 8-4
Measurement Calculations ............................................................... 8-5
Output Communication .................................................................. 8-5
Electronics .......................................................................................... 8-6
Motherboard .................................................................................... 8-6
External Connectors ...................................................................... 8-6
Internal Connectors ...................................................................... 8-6
Measurement Interface Board .......................................................... 8-7
Measurement Interface Board Connectors ..................................... 8-7
Flow Sensor Assembly ...................................................................... 8-7
Pressure Sensor Assembly ................................................................. 8-7
Temperature Control Board ............................................................. 8-7
PMT Power Supply Assembly .......................................................... 8-8
Input Board Assembly ...................................................................... 8-8
Digital Output Board ....................................................................... 8-8
I/O Expansion Board (Optional) ..................................................... 8-8
Front Panel Connector Board .......................................................... 8-9
I/O Components ................................................................................. 8-9
Analog Voltage Outputs ................................................................... 8-9
Analog Current Outputs (Optional) .............................................. 8-10
Analog Voltage Inputs (Optional) .................................................. 8-10
Digital Relay Outputs .................................................................... 8-10
Digital Inputs ................................................................................. 8-10
Serial Ports ..................................................................................... 8-11
RS-232 Connection ....................................................................... 8-11
RS-485 Connection ....................................................................... 8-12
Ethernet Connection ...................................................................... 8-12
External Accessory Connector ........................................................ 8-12
Chapter 9
Optional Equipment ........................................................................................... 9-1
Internal Zero/Span and Sample Valves ................................................ 9-1
Internal Permeation Span Source ........................................................ 9-2
Permeation Tube Installation ........................................................... 9-3
Computation of Concentrations ...................................................... 9-4
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Oven Installation and Configuration ................................................ 9-4
Permeation Tube Oven Calibration ................................................. 9-6
Setting Perm Oven Temperature ................................................... 9-6
Setting Temperature with Water Bath ........................................... 9-7
Setting Temperature with Known Resistance ................................ 9-8
Determining Permeation Rate by Weight Loss ................................. 9-9
Determining Release Rate by Transfer Standard............................... 9-9
Ozonator Permeation Dryer .............................................................. 9-10
Sample Permeation Dryer ................................................................. 9-10
Lag Volume ...................................................................................... 9-10
Principle of Operation ................................................................... 9-10
Lag Volume Test ............................................................................ 9-12
Ammonia Scrubber ........................................................................... 9-12
Teflon Particulate Filter .................................................................... 9-12
Ozone Particulate Filter .................................................................... 9-13
NO2-to-NO Converter ..................................................................... 9-13
I/O Expansion Board Assembly ......................................................... 9-13
25 Pin Terminal Board Assembly ...................................................... 9-13
Terminal Block and Cable Kits ......................................................... 9-13
Cables ............................................................................................... 9-14
Mounting Options ............................................................................ 9-15
Appendix A
Appendix B
Warranty ............................................................................................................ A-1
Warranty ............................................................................................. A-1
C-Link Protocol Commands ............................................................................ B-1
Instrument Identification Number ...................................................... B-1
Commands ......................................................................................... B-2
Convert Concentration Formats ....................................................... B-3
Commands List ................................................................................ B-3
Measurements ................................................................................... B-10
Alarms ............................................................................................... B-14
Diagnostics ....................................................................................... B-18
Datalogging....................................................................................... B-19
Calibration ........................................................................................ B-27
Keys/Display ..................................................................................... B-33
Measurement Configuration ............................................................. B-35
Hardware Configuration ................................................................... B-39
Communications Configuration ....................................................... B-43
I/O Configuration ............................................................................. B-49
Record Layout Definition ................................................................. B-55
Format Specifier for ASCII Responses ............................................ B-55
Format Specifier for Binary Responses ........................................... B-56
Format Specifier for EREC Layout ................................................. B-56
Text ............................................................................................ B-56
Thermo Fisher Scientific Model 42i Instruction Manual xiii
Page 20
Contents
Value String ................................................................................ B-57
Value Source ............................................................................... B-57
Alarm Information ...................................................................... B-57
Translation Table ........................................................................ B-57
Selection Table ............................................................................ B-57
Button Designator....................................................................... B-58
Examples ..................................................................................... B-59
Appendix C
Appendix D
MODBUS Protocol ............................................................................................ C-1
Serial Communication Parameters ..................................................... C-1
TCP Communication Parameters ...................................................... C-2
Application Data Unit Definition ...................................................... C-2
Slave Address ................................................................................... C-2
MBAP Header ................................................................................ C-2
Function Code ................................................................................ C-3
Data ................................................................................................ C-3
Error Check .................................................................................... C-3
Function Codes .................................................................................. C-3
(0x01/0x02) Read Coils / Read Inputs ............................................ C-3
(0x03/0x04) Read Holding Registers / Read Input Registers ........... C-5
(0x05) Force (Write) Single Coil ..................................................... C-7
MODBUS Parameters Supported ...................................................... C-8
Reading a Write Coil .................................................................... C-14
Geysitech (Bayern-Hessen) Protocol ........................................................... D-1
Serial Communication Parameters ..................................................... D-1
TCP Communication Parameters ...................................................... D-2
Instrument Address ............................................................................ D-2
Abbreviations Used ............................................................................ D-2
Basic Command Structure ................................................................. D-2
Block Checksum Characters <BCC> .................................................. D-3
Geysitech Commands ........................................................................ D-3
Instrument Control Command (ST) ............................................... D-3
Data Sampling/Data Query Command (DA) .................................. D-4
Measurements reported in response to DA command ..................... D-6
Single Range Mode ...................................................................... D-6
Dual/Auto Range Mode ............................................................... D-6
Operating and Error Status ............................................................. D-6
xiv Model 42i Instruction Manual Thermo Fisher Scientific
Page 21
Figures
Figure 1–1. Model 42i Flow Schematic ............................................................. 1-3
Figure 2–1. Remove the Packing Material ......................................................... 2-2
Figure 2–2. Remove the Shipping Screws ......................................................... 2-2
Figure 2–3. Model 42i Rear Panel ...................................................................... 2-3
Figure 2–4. Atmospheric Dump Bypass Plumbing ............................................. 2-4
Figure 2–5. I/O Terminal Board Views ............................................................... 2-6
Figure 2–6. D/O Terminal Board Views .............................................................. 2-7
Figure 2–7. 25-Pin Terminal Board Views .......................................................... 2-8
Figure 3–1. Front Panel Display .......................................................................... 3-2
Figure 3–2. Front Panel Pushbuttons .................................................................. 3-2
Figure 3–3. Flowchart of Menu-Driven Software .............................................. 3-5
Figure 3–4. Pin-Out of Rear Panel Connector in Single Range Mode ............... 3-9
Figure 3–5. Pin-Out of Rear Panel Connector in Dual Range Mode ................ 3-10
Figure 3–6. Analog Output in Auto Range Mode ............................................. 3-11
Figure 3–7. Pin-Out of Rear Connector in Auto Range Mode .......................... 3-12
Figure 4–1. GPT System ...................................................................................... 4-3
Figure 5–1. Inspecting and Replacing the Capillaries ....................................... 5-3
Figure 5–2. Inspecting and Cleaning the Fan Filters .......................................... 5-5
Figure 5–3. Rebuilding the Pump........................................................................ 5-7
Figure 6–1. Board-Level Connection Diagram - Common Electronics ............... 6-6
Figure 6–2. Board-Level Connection Diagram - Measurement System ............ 6-7
Figure 7–1. Properly Grounded Antistatic Wrist Strap ...................................... 7-4
Figure 7–2. Component Layout ........................................................................... 7-7
Figure 7–3. Removing the Measurement Bench and Lowering the Partition
Panel ..................................................................................................................... 7-8
Figure 7–4. Replacing the Pump ....................................................................... 7-10
Figure 7–5. Replacing the Fan .......................................................................... 7-11
Figure 7–6. PMT Cooler and Reaction Chamber .............................................. 7-12
Figure 7–7. Replacing the PMT ........................................................................ 7-14
Figure 7–8. Replacing the PMT HVPS .............................................................. 7-15
Figure 7–9. Cleaning or Removing the Reaction Chamber .............................. 7-18
Figure 7–10. NO2-to-NO Molybdenum Converter Assembly ........................... 7-19
Figure 7–11. Replacing the Solenoid Valve ..................................................... 7-21
Figure 7–12. Replacing the Ozonator Assembly .............................................. 7-22
Figure 7–13. Replacing the Input Board ........................................................... 7-24
Figure 7–14. Replacing the DC Power Supply .................................................. 7-26
Thermo Fisher Scientific Model 42i Instruction Manual xv
Page 22
Figures
Figure 7–15. Rear Panel Analog Input and Output Pins ................................... 7-27
Figure 7–16. Replacing the Pressure Transducer ............................................. 7-32
Figure 7–17. Replacing the Scrubber ................................................................ 7-37
Figure 7–18. Replacing the I/O Expansion Board (Optional) ............................ 7-38
Figure 7–19. Rear Panel Board Connectors ...................................................... 7-38
Figure 7–20. Replacing the Measurement Interface Board ............................. 7-41
Figure 7–21. Replacing the Flow Transducer ................................................... 7-42
Figure 7–22. Replacing the Front Panel Board and the LCD Module ............... 7-45
Figure 8–1. Hardware Components .................................................................... 8-2
Figure 9–1. Flow Diagram, Zero/Span Option .................................................... 9-2
Figure 9–2. Flow Diagram, Internal Permeation with Zero/Span Valve ............ 9-3
Figure 9–3. Flow Diagram, Lag Volume ............................................................ 9-12
Figure 9–1. Bench Mounting ............................................................................. 9-16
Figure 9–2. EIA Rack Mounting ........................................................................ 9-17
Figure 9–3. Retrofit Rack Mounting .................................................................. 9-18
Figure 9–4. Rack Mount Option Assembly ....................................................... 9-19
Figure B–1. Flags .............................................................................................. B-14
xvi Model 42i Instruction Manual Thermo Fisher Scientific
Page 23
Tables
Table 1–1. Model 42i Specifications ................................................................. 1-3
Table 1–2. Model 42i Optional Permeation Oven Specifications ...................... 1-4
Table 2–1. I/O Terminal Board Pin Descriptions ................................................ 2-6
Table 2–2. D/O Terminal Board Pin Descriptions............................................... 2-7
Table 2–3. 25-Pin Terminal Board Pin Descriptions ........................................... 2-8
Table 3–1. Front Panel Pushbuttons ................................................................... 3-3
Table 3–2. Default Analog Outputs in Single Range Mode ............................... 3-9
Table 3–3. Default Analog Outputs in Dual Range Mode ............................... 3-10
Table 3–4. Default Analog Outputs in Auto Range Mode ............................... 3-12
Table 3–5. Standard Ranges ............................................................................. 3-14
Table 3–6. Extended Ranges ............................................................................ 3-15
Table 3–7. Analog Output Zero to Full-Scale Table ......................................... 3-50
Table 3–8. Signal Type Group Choices ............................................................. 3-52
Table 4–1. Scrubbing Materials ......................................................................... 4-2
Table 6–1. Troubleshooting - General Guide ..................................................... 6-2
Table 6–2. Troubleshooting - Alarm Messages ................................................. 6-4
Table 6–3. Motherboard Connector Pin Descriptions ........................................ 6-8
Table 6–4. Measurement Interface Board Connector Pin Descriptions .......... 6-13
Table 6–5. Front Panel Board Connector Pin Diagram ..................................... 6-15
Table 6–6. I/O Expansion Board (Optional) Connector Pin Descriptions ......... 6-17
Table 6–7. Digital Output Board Connector Pin Descriptions .......................... 6-18
Table 6–8. Input Board Connector Pin Descriptions ........................................ 6-20
Table 6–9. Temperature Control Board Connector Pin Descriptions ............... 6-20
Table 7–1. Model 42i Replacement Parts .......................................................... 7-4
Table 7–2. Model 42i Cables .............................................................................. 7-6
Table 7–3. External Device Connection Components ........................................ 7-6
Table 7–4. Analog Output Channels and Rear Panel Pin Connections ............ 7-28
Table 7–5. Analog Input Channels and Rear Panel Pin Connections............... 7-28
Table 8–1. RS-232 DB9 Connector Pin Configurations .................................... 8-12
Table 8–2. RS-485 DB9 Connector Pin Configuration ...................................... 8-12
Table 9–1. Cable Options .................................................................................. 9-14
Table 9–2. Color Codes for 25-Pin and 37-Pin Cables ..................................... 9-14
Table 9–3. Mounting Options ........................................................................... 9-15
Table B–1. Error Response Messages ............................................................... B-3
Table B–1. C-Link Protocol Commands .............................................................. B-3
Thermo Fisher Scientific Model 42i Instruction Manual xvii
Page 24
Tables
Table B–2. Averaging Times ............................................................................. B-11
Table B–3. Alarm Trigger Values ...................................................................... B-18
Table B–4. Record Output Formats ................................................................... B-23
Table B–5. Stream Time Values ....................................................................... B-27
Table B–6. Standard Ranges ............................................................................ B-35
Table B–7. Extended Ranges ............................................................................ B-36
Table B–8. Contrast Levels ............................................................................... B-39
Table B–9. Reply Termination Formats ............................................................ B-46
Table B–10. Allow Mode Command Values .................................................... B-48
Table B–11. Power Up Mode Values ................................................................ B-48
Table B–12. Set Layout Ack Values .................................................................. B-49
Table B–13. Analog Current Output Range Values .......................................... B-50
Table B–14. Analog Voltage Output Range Values ......................................... B-51
Table B–15. Default Output Assignment .......................................................... B-52
Table C–1. Read Coils for 42i ............................................................................. C-8
Table C–2. Read Registers for 42i .................................................................... C-11
Table C–3. Write Coils for 42i .......................................................................... C-13
Table D–1. Operating Status for Model 42i ...................................................... D-7
Table D–2. Error Status for Model 42i .............................................................. D-7
xviii Model 42i Instruction Manual Thermo Fisher Scientific
Page 25
Chapter 1
Introduction
The Model 42i Chemiluminescence NO-NO2-NOx Analyzer combines
proven detection technology, easy to use menu-driven software, and
advanced diagnostics to offer unsurpassed flexibility and reliability. The
Model 42i has the following features:
● 320 x 240 graphics display
● Menu-driven software
● Field programmable ranges
● User-selectable single/dual/auto range modes
● Multiple user-defined analog outputs
● Analog input options
● High sensitivity
● Fast response time
● Linearity through all ranges
● Internal sample pump (except with internal permeation span source
option)
● Independent NO-NO
● Replaceable NO
● User-selectable digital input/output capabilities
● Standard communications features include RS232/485 and Ethernet
● C-Link, MODBUS, Geysitech (Bayern-Hessen), streaming data, and
2
-NOx ranges
2
converter cartridge
NTP (Network Time Protocol) protocols. Simultaneous connections
from different locations over Ethernet.
For details of the analyzer’s principle of operation and product
specifications, see the following topics:
● “Principle of Operation” on page 1-2
● “Specifications” on page 1-3
Thermo Fisher Scientific Model 42i Instruction Manual 1-1
Page 26
Introduction
Principle of Operation
Thermo Fisher Scientific is pleased to supply this NO-NO2-NOx analyzer.
We are committed to the manufacture of instruments exhibiting high
standards of quality, performance, and workmanship. Service personnel are
available for assistance with any questions or problems that may arise in the
use of this analyzer. For more information on servicing, see Chapter 7,
“Servicing”.
Principle of
Operation
The Model 42i 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 electronically excited NO2 molecules decay to lower energy
states. Specifically:
O + NO
NO
h + O +
223
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 molybdenum NO2-to-NO converter heated to about 325 °C (the
optional stainless steel converter is heated to 625 °C).
The ambient air sample is drawn into the Model 42i through the sample
bulkhead, as shown in Figure 1–1. 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). A flow
sensor to the reaction chamber measures the sample flow.
Dry air enters the Model 42i through the dry air bulkhead, 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 NO
molecules. A photomultiplier tube (PMT) housed in a
2
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 NO
concentration. The Model 42i outputs NO, NO2, and
2
NOx concentrations to the front panel display, the analog outputs, and also
makes the data available over the serial or Ethernet connection.
1-2 Model 42i Instruction Manual Thermo Fisher Scientific
Page 27
Figure 1–1. Model 42i Flow Schematic
Introduction
Specifications
Specifications
Table 1–1 lists the specifications for the Model 42i.
Table 1–1. Model 42i Specifications
Preset ranges 0-0.05, 0.1, 0.2, 0.5, 1, 2, 5, 10, 20 ppm
0-0.1, 0.2, 0.5, 1, 2, 5, 10, 20, 30 mg/m
Extended ranges 0-0.2, 0.5, 1, 2, 5, 10, 20, 50, 100 ppm
0-0.5, 1, 2, 5, 10, 20, 50, 100, 150 mg/m
Custom ranges 0-0.05 to 20 ppm (0-0.2 to 100 ppm in extended ranges)
0-0.1 to 30 mg/m
Zero noise 0.20 ppb RMS (60 second averaging time)
Lower detectable limit 0.40 ppb (60 second averaging time)
Zero drift (24 hour) < 0.40 ppb
Span drift 1% full-scale
Response time (in
automatic mode)
Linearity 1% full-scale
40 seconds (10 second averaging time)
80 seconds (60 second averaging time)
300 seconds (300 second averaging time)
3
(0-0.5 to 150 mg/m3 in extended ranges)
3
3
Sample flow rate 0.6–0.8 LPM
Operating temperature 15–35 °C (may be safely operated over the 0–45 °C)*
Thermo Fisher Scientific Model 42i Instruction Manual 1-3
Page 28
Introduction
Specifications
Power requirements
Physical dimensions 16.75” (W) X 8.62” (H) X 23” (D)
Weight Approximately 55 lbs.
Analog outputs 6 voltage outputs; 0–100 mV, 1, 5, 10 V (user selectable), 5% of
Digital outputs 1 power fail relay Form C, 10 digital relays Form A, user
Digital inputs 16 digital inputs, user select programmable, TTL level, pulled
Serial Ports 1 RS-232 or RS-485 with two connectors, baud rate 1200–
Ethernet connection RJ45 connector for 10Mbs Ethernet connection, static or
100 VAC @ 50/60 Hz
115 VAC @ 50/60 Hz
220–240 VAC @ 50/60 Hz
300 watts
full-scale over/under range (user selectable), 12 bit resolution,
measurement output user selectable per channel
selectable alarm output, relay logic, 100 mA @ 200 VDC
high
115200, data bits, parity, and stop bits, protocols: C-Link,
MODBUS, Geysitech (Bayern-Hessen), and streaming data (all
user selectable)
dynamic TCP/IP addressing
*In non-condensing environments. Performance specifications based on operation in 15–35 °C range.
Table 1–2. Model 42i Optional Permeation Oven Specifications
Temperature control Single Point 45
Temperature stability 0.1
Warm-up time 1 hour (permeation device can take 24 to 48 hours to stabilize)
Carrier gas flow 70 scc/min
Chamber size Accepts permeation tubes up to 9 cm in total length; 1 cm in
Temperature range 15–30 °C
Power requirements 120 VAC @ 50/60 Hz, 50 watts (in addition to the standard
Weight Approximately 5 lbs. (in addition to the standard Model 42i)
°C
diameter
Model 42i)
°C
1-4 Model 42i Instruction Manual Thermo Fisher Scientific
Page 29
Chapter 2
Installation
Installation of the Model 42i includes lifting the instrument, unpacking
and inspection, connecting sample, zero, span, and exhaust lines, and
attaching the analog and/or digital outputs to a recording device. The
installation should always be followed by instrument calibration as
described in the “Calibration” chapter of this manual.
Installing the Model 42i includes the following recommendations and
procedures:
● “Lifting” on page 2-1
Lifting
Unpacking and
Inspection
● “Unpacking and Inspection” on page 2-1
● “Setup Procedure” on page 2-3
● “Connecting External Devices” on page 2-5
● “Startup” on page 2-9
When lifting the instrument, use procedure appropriate to lifting a heavy
object, such as, bending at the knees while keeping your back straight and
upright. Grasp the instrument at the bottom in the front and at the rear of
the unit. Although one person can lift the unit, it is desirable to have two
persons lifting, one by grasping the bottom in the front and the other by
grasping the bottom in the rear.
Equipment Damage Do not attempt to lift the instrument by the cover or
other external fittings.
The Model 42i 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 its shipping container and set it on a table
or bench that allows easy access to both the front and rear.
Thermo Fisher Scientific Model 42i Instruction Manual 2-1
Page 30
Installation
Unpacking and Inspection
2. Remove the cover to expose the internal components.
3. Remove the packing material (Figure 2–1).
Remove Packing
(2 pieces)
Remove Packing
(2 pieces)
Units without Optional I/O Board Units with Optional I/O Board
Figure 2–1. Remove the Packing Material
4. Remove the three shipping screws (Figure 2–2).
Figure 2–2. Remove the Shipping Screws
Shipping Screws (3)
5. Check for possible damage during shipment.
2-2 Model 42i Instruction Manual Thermo Fisher Scientific
Page 31
Installation
Setup Procedure
6. Check that all connectors and circuit boards are firmly attached.
7. Re-install the cover.
8. Remove any protective plastic material from the case exterior.
Setup Procedure
Use the following procedure to setup the instrument:
1. Connect the sample line to the SAMPLE bulkhead on the rear panel
(Figure 2–3). Ensure that the sample line is not contaminated by dirty,
wet, or incompatible materials. All tubing should be constructed of
FEP Teflon®, 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.
Figure 2–3. Model 42i Rear Panel
Note Gas must be delivered to the instrument free of particulates. It may
be necessary to use the Teflon particulate filter as described in “Teflon
Particulate Filter” on page 9-12. ▲
Thermo Fisher Scientific Model 42i Instruction Manual 2-3
Page 32
Installation
Setup Procedure
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 2–4 if gas pressure is greater than atmospheric pressure. ▲
SAMPLE
Instrument Bulkhead
Vent to Exhaust Line at
Atmospheric Pressure
Input Gas Line
Figure 2–4. Atmospheric Dump Bypass Plumbing
2. Connect the air dryer to the DRY AIR bulkhead.
3. Connect the EXHAUST bulkhead to a suitable vent or ozone scrubber.
The exhaust line should be 1/4-inch OD with a minimum ID of 1/8inch. The length of the exhaust line should be less than 10 feet. Verify
that there is no restriction in this line.
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 2-5
“Instrument Controls Menu > I/O Configuration” on page 3-43
“External Device Connection Components” on page 7-6
“Terminal Block and Cable Kits” on page 9-13
For detailed information about troubleshooting a connection, refer to
“Analog Output Testing” on page 7-26.
5. Plug the instrument into an outlet of the appropriate voltage and
frequency.
2-4 Model 42i Instruction Manual Thermo Fisher Scientific
Page 33
Installation
Connecting External Devices
WARNING The Model 42i is supplied with a three-wire grounding cord.
Under no circumstances should this grounding system be defeated. ▲
Connecting
External Devices
Terminal Board PCB
Assemblies
Several components are available for connecting external devices to iSeries
instruments.
These connection options include:
● Individual terminal board PCB assemblies
● Terminal block and cable kits (optional)
● Individual cables (optional)
For detailed information on the optional connection components, refer to
the “Optional Equipment” chapter. For associated part numbers, refer to
“External Device Connection Components” on page 7-6.
The terminal board PCB assemblies are circuit boards with a D-Sub
connector on one side and a series of screw terminals on the other side.
This assembly provide a convenient mechanism for connecting wires from
a data system to the analyzer’s I/O connectors.
The following terminal board PCB assemblies are available for iSeries
instruments:
● I/O terminal board PCB assembly, 37 pin (standard)
● D/O terminal board PCB assembly, 37 pin (standard)
● 25-pin terminal board PCB assembly, (included with optional I/O
expansion board)
I/O Terminal Board
Figure 2–5 shows the recommended method for attaching the cable to the
terminal board using the included tie-down and spacer. Table 2–1
identifies the connector pins and associated signals.
Note Not all of the I/O available in the instrument is brought out on the
supplied terminal board. If more I/O is desired, an alternative means of
connection is required. See optional “Terminal Block and Cable Kits”. ▲
Thermo Fisher Scientific Model 42i Instruction Manual 2-5
Page 34
Installation
Connecting External Devices
See Detail “A”
See Detail “B”
Component Side Viewed from Top of Board
Assembled Connector
Figure 2–5. I/O Terminal Board Views
Table 2–1. I/O Terminal Board Pin Descriptions
Screw Signal Description Screw Signal Description
1 Analog1 13 Power_Fail_NC
2 Analog ground 14 Power_Fail_COM
3 Analog2 15 Power_Fail_NO
Detail “A”
Detail “B”
4 Analog ground 16 TTL_Input1
5 Analog3 17 TTL_Input2
6 Analog ground 18 TTL_Input3
7 Analog4 19 TTL_Input4
8 Analog ground 20 Digital ground
9 Analog5 21 TTL_Input5
10 Analog ground 22 TTL_Input6
11 Analog6 23 TTL_Input7
12 Analog ground 24 Digital ground
2-6 Model 42i Instruction Manual Thermo Fisher Scientific
Page 35
Installation
Connecting External Devices
D/O Terminal Board
See Detail “A”
Component Side Viewed from Top of Board
Figure 2–6 shows the recommended method for attaching the cable to the
terminal board using the included tie-down and spacer. Table 2–2
identifies the connector pins and associated signals.
See Detail “B”
Detail “A”
Detail “B”
Assembled Connector
Figure 2–6. D/O Terminal Board Views
Table 2–2. D/O Terminal Board Pin Descriptions
Screw Signal Description Screw Signal Description
1 Relay1_ContactA 13 Relay7_ContactA
2 Relay1_ContactB 14 Relay7_ContactB
3 Relay2_ContactA 15 Relay8_ContactA
4 Relay2_ContactB 16 Relay8_ContactB
5 Relay3_ContactA 17 Relay9_ContactA
6 Relay3_ContactB 18 Relay9_ContactB
7 Relay4_ContactA 19 Relay10_ContactA
8 Relay4_ContactB 20 Relay10_ContactB
9 Relay5_ContactA 21 Solenoid_Drive_Output 1
10 Relay5_ContactB 22 +24V
11 Relay6_ContactA 23 Solenoid_Drive_Output 2
12 Relay6_ContactB 24 +24V
Thermo Fisher Scientific Model 42i Instruction Manual 2-7
Page 36
Installation
Connecting External Devices
25-Pin Terminal Board
See Detail “A”
Component Side Viewed from Top of Board
The 25-pin terminal board is included with the optional I/O Expansion
Board.
See Detail “B”
Detail “A” Detail “B”
Assembled Connector
Figure 2–7. 25-Pin Terminal Board Views
Table 2–3. 25-Pin Terminal Board Pin Descriptions
Screw Signal Description Screw Signal Description
1 IOut1 13 Analog_In1
2 Isolated ground 14 Analog_In2
3 IOut2 15 Analog_In3
4 Isolated ground 16 GNDD
5 IOut3 17 Analog_In4
6 Isolated ground 18 Analog_In5
7 IOut4 19 Analog_In6
8 Isolated ground 20 GNDD
9 IOut5 21 Analog_In7
10 Isolated ground 22 Analog_In8
11 IOut6 23 GNDD
12 Isolated ground 24 GNDD
2-8 Model 42i Instruction Manual Thermo Fisher Scientific
Page 37
Installation
Startup
Startup
Use the following procedure when starting the instrument.
1. Turn the power ON.
2. Allow 90 minutes for the instrument to stabilize.
Note it is best to turn the ozonator on and let the instrument run
overnight before calibration in order to obtain the most accurate
information. ▲
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.
Thermo Fisher Scientific Model 42i Instruction Manual 2-9
Page 38
Page 39
Chapter 3
Operation
This chapter describes the front panel display, front panel pushbuttons, and
menu-driven software. For details, see the following topics:
● “Display” on page 3-1
● “Pushbuttons” on page 3-2
● “Firmware Overview” on page 3-4
● “Range Menu” on page 3-8
● “Averaging Time” on page 3-16
Display
● “Calibration Factors Menu” on page 3-17
● “Calibration Menu” on page 3-20
● “Instrument Controls Menu” on page 3-21
● “Diagnostics Menu” on page 3-58
● “Alarms Menu” on page 3-66
● “Service Menu” on page 3-75
● “Password Menu” on page 3-92
The 320 x 240 graphics liquid-crystal display (LCD) shows the sample
concentrations, instrument parameters, instrument controls, help, and error
messages. Some menus contain more items than can be displayed at one
time. For these menus, use
and to move the cursor up and
down to each item.
Thermo Fisher Scientific Model 42i Instruction Manual 3-1
Page 40
Operation
Pushbuttons
Pushbuttons
Figure 3–1. Front Panel Display
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
it off immediately using soap and water. ▲
The Pushbuttons allow the user to traverse the various screens/menus.
Figure 3–2. Front Panel Pushbuttons
3-2 Model 42i Instruction Manual Thermo Fisher Scientific
Page 41
Table 3–1 lists the front panel pushbuttons and their functions.
Table 3–1. Front Panel Pushbuttons
Key Name Function
= Soft Keys The (soft keys) are used to provide shortcuts that
allow the user to jump to user-selectable menu screens. For
more information on processing soft keys, see “Soft Keys”
below.
Operation
Pushbuttons
= Run The
= Menu The is used to display the Main Menu when in the
= Help The is context-sensitive, that is, it provides
= Enter The is used to select a menu item, accept/set/save
= Up, Down
= Left, Right
screen normally displays the NO, NO
concentrations.
Run screen, or back up one level in the menu system. For
more information about the Main Menu, see “Main Menu”
later in this chapter.
additional information about the screen that is being
displayed. Press
current screen or menu. Help messages are displayed using
lower case letters to easily distinguish them from the
operating screens. To exit a help screen, press
return to the Run screen.
The four arrow pushbuttons (
change values and states in specific screens.
a change, and/or toggle on/off functions.
is used to display the Run screen. The Run
, and NOx
2
for a brief explanation about the
to return to the previous screen, or to
, , , and
) move the cursor up, down, left, and right or
or
Soft Keys
The soft keys are multi-functional keys that use part of the display to
identify their function. The function of the soft keys is to provide a
shortcut to the most often used menus and screens. They are located
directly underneath the display, and user-defined labels in the lower part of
the display indicate the function of each key at that time.
To change a soft key, place the menu cursor “>” on the item of the selected
menu or screen you wish to set. Press
followed by the selected soft
key within 1 second of pressing the right-arrow key. The “edit soft key
prompt” will be displayed for configuration of the new label.
Note Not all menu items may be assigned to soft keys. If a particular menu
or screen item cannot be assigned, the key assignment screen will not come
up upon entering right-arrow-soft key combinations. All items under the
Service menu (including the menu itself) cannot be assigned soft keys. ▲
Thermo Fisher Scientific Model 42i Instruction Manual 3-3
Page 42
Operation
Firmware Overview
EDIT SOFT KEY PROMPT:
CURRENTLY:RANGE
RANGE
ABCDEFGHIJKLMN BKSP
OPQRSTUVWXYZ PAGE
0123456789 ./- SAVE
RANGE AVG DIAGS ALARM
Alphanumeric Entry
Screen
Entry Line
Keyboard
ANGE
ABCDEFGHIJKLMN BKSP
OPQRSTUVWXYZ PAGE
0123456789 ./- SAVE
RANGE AVG DIAGS ALARM
The alphanumeric entry screen is used to enter strings consisting of letters,
numbers, and other characters. The cursor may be positioned within the
entry line using the and keys. If a character is entered over an
existing character, that character will be overwritten. Use the and
keys to switch between the entry line and the keyboard as well as to
move within the keyboard. To select a character to add to the string, use
the cursor keys to position the cursor over the desired character, and then
press the key to add that character to the entry line.
On the right side of the keyboard are special functions. BKSP is used to
move the cursor in the entry line one place to the left, deleting the
character that was to the left of the cursor and moving any character at or
to the right of the cursor one place to the left. PAGE is used to change the
keyboard character page. For the English language, this switches between
upper and lower-case alphabetic characters. SAVE stores the string from the
entry line into the parameter. Alternately, if the active cursor is moved to
the entry line, may be pressed to store the string from the entry line
into the parameter.
ANGE
abcdefghijklmn BKSP
opqrstuvwxyz PAGE
0123456789 ./- SAVE
RANGE AVG DIAGS ALARM
Firmware
The Model 42i utilizes the menu-driven firmware as illustrated by the
flowchart in Figure 3–3. The Power-Up screen, shown at the top of the
Overview
flowchart, is displayed each time the instrument is turned on. This screen is
displayed while the instrument is warming up and performing self-checks.
After the warm-up period, the Run screen is automatically displayed. The
Run screen is the normal operating screen. It displays the NO, NO2, and
NOx concentrations, depending on operating mode. From the Run screen,
the Main Menu can be displayed by pressing
. The Main Menu
contains a list of submenus. Each submenu contains related instrument
settings. This chapter describes each submenu and screen in detail. Refer to
the appropriate sections for more information.
3-4 Model 42i Instruction Manual Thermo Fisher Scientific
Page 43
Operation
Firmware Overview
Password
Set Password
Change Password
Unlock Instrument
Lock Instrument
Remove Password
Power−up
Service
Temp Cal
Analog Ou tput Cal
Analog Input Cal
Conv Set Temp
Flow Cal
PMT Voltage Adj
Range Mode Select
Pressure Cal
Alarms
Alarms Detected
Chamber Temp
Cooler Temp
Conv Temp
Internal Temp
Diagnostics
Temps
Voltages
Program Version
Pressure
Flow
Screen
Screen
Self Test
Main Menu
Run Screen
Controls
Instrument
Auto/Man Mode
Ozonator
Comm Settings
PMT Supply
Datalogging Settings
2
X
X
Calibration
Cal NO Bkg
Cal NO Bkg
Cal NO Coef
Cal NO Coef
Cal NO Coef
Ozonator Safety
Input Bd Cal
Pressure
Analog Input Readings
I/O Config
Cal Pressure
Analog Input Voltages
Temp Compensation
Zero/Span Check
Flow
Ozonator Flow
Digital Inputs
Pres Compensation
Extended Ranges
Dilution Ratio
Display Pixel Test
Restore User Defaults
2
Span Check
X
Zero Autocal
Instrumen t Config
Date/Time
Cal Hi NO Coef
X
Span Autocal
NO Conc
NO Conc
NO Conc
MB Status
Int. Bd. Status
I/O Exp. Bd. Status
Contact Info
2
X
X
2
Cal Hi NO Coef
Cal Hi NO Coef
Cal Lo NO Coef
Cal Lo NO Coef
Cal Lo NO Coef
Cal Pressure
Zero Check
Test Analog Outputs
Relay States
Screen Contrast
Service Mode
Cal NO Bkg
Cal NO Bkg
X
2
X
Lo Avg Time
Hi NO Range
NO Bkg
Lo NO Range
2
X
NO Bkg
Hi NO Coef
Hi NO Coef
2
X
2
Hi NO Range
Lo NO Range
Hi NO Range
Hi NO Coef
Lo NO Range
X
Lo NO Coef
Lo NO Coef
Set Custo m Ranges
Cal Pressure
Lo NO Coef
Reset User Cal Defaults
For Dual or Auto Range Only
Calibration
Averaging
Factors
X
2
X
NO Bkg
Cal Pressure
NO Bkg
NO Coef
NO Coef
NO Coef
Reset User Cal Defaults
Time
Avg Time
Range
Gas Units
NO Range
NO Range
Hi Avg Time
X
2
Set Custo m Ranges
Gas Units
NO Range
Figure 3–3. Flowchart of Menu-Driven Software
Thermo Fisher Scientific Model 42i Instruction Manual 3-5
Page 44
Operation
Firmware Overview
Power-Up Screen
Run Screen
The Power-Up screen is displayed when power is applied to the Model 42i.
This screen is displayed while the internal components are warming up and
diagnostic checks are being performed.
Please wait while booting...
The Run screen displays the NO, NO2, and NOx concentrations. The
status bar displays the time (24-hour format), the password (lock) icon,
service (wrench) icon, alarm (bell) icon, and optional zero/span sample
solenoid valve status, if installed.
Status Bar Icons
The password (lock) icon indicates that
no parameter changes can be made from
the front panel.
The service (wrench) icon indicates that the
instrument is in the service mode.
The alarm (bell) icon indicates
that an alarm is active.
The word “SAMPLE” on the left of the status bar indicates the analyzer has
the span/zero valve option and is in “SAMPLE” mode. Other modes
appear in the same area of the display as “ZERO” or “SPAN”. For more
information about the optional solenoid valves, see Chapter 9, “Optional
Equipment”.
3-6 Model 42i Instruction Manual Thermo Fisher Scientific
Page 45
Operation
Firmware Overview
When operating in dual or auto range mode two sets of coefficients are
used to calculate the NO-NO2-NOx “High” and “Low” concentrations.
Also, two averaging times are used—one for each range. The title bar
indicates which range concentrations are displayed. The words “LOW
RANGE CONCENTRATION” on the top of the display indicates that
the low concentration is displayed. In dual range mode, pressing the
and
arrows will toggle between high and low concentrations. The
example below shows the Run screen in single range mode.
Main Menu
Title Bar
X CONCENTRATION W
Gas Concentraton
NO 62.7 PPB 28.7 PPB
Gas Type
NO2 25.5 PPB
Gas Units
NOx 88.2 PPB 29.2 PPB
Status Bar
SAMPLE 12:34 ALARMx
RANGE AVG DIAGS ALARM
Programmable Soft Key Labels
The Main Menu contains a number of submenus. Instrument parameters
and settings can be read and modified within the submenus according to
their function. The concentration appears above the Main Menu and
submenus in every screen. The Service menu is visible only when the
instrument is in service mode. For more information on the service mode,
see “Service Mode” later in this chapter.
Status Bar Icons
● Use and to move the cursor up and down.
● Press to make a selection.
● Press to return to the Main Menu or to return to the Run
screen.
Thermo Fisher Scientific Model 42i Instruction Manual 3-7
Page 46
Operation
Range Menu
XXLO WCONCENTRATIONXXLO W
NO 62.7 PPB
NO2 25.5 PPB
NOx 88.2 PPB
xSAMPLE 12:34 x
MAIN MENU:
>RANGE
AVERAGING TIME
CALIBRATION FACTORS
CALIBRATION
INSTRUMENT CONTROLS
DIAGNOSTICS
ALARMS
RANGE AVG DIAGS ALARM
SERVICE
PASSWORD
Range Menu
RANGE:
>GAS UNITS PPB
NO RANGE 50
NO2 RANGE 50
NOx RANGE 50
SETCUSTOM RANGES
RANGE AVG DIAGS ALARM
HI NOx RANGE 500
The Range menu allows the operator to select the gas units, NO-NO2-NOx
ranges, and to set the custom ranges. The screens below show the range
menu in single range mode and dual/auto range modes. The only
difference between the screens are the words “HI” and “LO” to indicate
which range is displayed. For more information about the single, dual and
auto range modes, see “Single Range Mode”, “Dual Range Mode”, and
“Auto Range Mode” below.
● In the Main Menu, choose Range
RANGE:
>GAS UNITS PPB
HI NO RANGE 500
LO NO RANGE 50
HI NO2 RANGE 500
LO NO2 RANGE 50
RANGE AVG DIAGS ALARM
LO NOx RANGE 50
SET CUSTOM RANGES
Single Range Mode
In the single range mode, the NO, NO2, and NOx channels each have one
range, one averaging time, and one span coefficient.
By default, the three analog outputs are arranged on the rear panel
connector as shown in Figure 3–4. See Table 3–2 for channels and pin
3-8 Model 42i Instruction Manual Thermo Fisher Scientific
Page 47
Operation
Range Menu
connections. Single range mode may be selected from the “Range Mode
Select” on page 3-76.
Dual Range Mode
Figure 3–4. Pin-Out of Rear Panel Connector in Single Range Mode
Table 3–2. Default Analog Outputs in Single Range Mode
Channel Connector Pin I/O Terminal Pin Description
1 14 1 NO Analog Output
2 33 3 NO
3 15 5 NOx Analog Output
4 34 7 None
5 17 9 None
6 36 11 None
Ground 16, 18, 19, 35, 37 2, 4, 6, 8, 10, 12 Signal Ground
Analog Output
2
Note All channels are user definable. If any customization has been made
to the analog output configuration, the default selections may not apply. ▲
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, 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
Thermo Fisher Scientific Model 42i Instruction Manual 3-9
Page 48
Operation
Range Menu
can be set to output concentrations from 0 to 50 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 necessary if the two ranges are not close to one
another. For example, the low NO range is set to 0–50 ppb and the high
NO range is set to 0–20,000 ppb.
By default, in the dual range mode, the analog outputs are arranged on the
rear panel connector as shown in Figure 3–5. See Table 3–3 for channels
and pin connections. Dual range mode may be selected from the “Range
Mode Select” on page 3-76.
Figure 3–5. Pin-Out of Rear Panel Connector in Dual Range Mode
Table 3–3. Default Analog Outputs in Dual Range Mode
Channel Connector Pin I/O Terminal Pin Description
1 14 1 NO High Range
2 33 3 NO Low Range
3 15 5 NO2 High Range
4 34 7 NO2 Low Range
5 17 9 NOx High Range
6 36 11 NOx Low Range
Ground 16, 18, 19, 35, 37 2, 4, 6, 8, 10, 12 Signal Ground
3-10 Model 42i Instruction Manual Thermo Fisher Scientific
Page 49
Operation
Range Menu
Note All channels are user definable. If any customization has been made
to the analog output configuration, the default selections may not apply. ▲
Auto Range Mode
The auto range mode switches the NO, NO2, and NOx analog outputs
between high and low ranges, depending on the NOx concentration level.
The high and low ranges are defined in the Range menu.
For example, suppose the low range is set to 20 ppb and the high range is
set to 100 ppb (Figure 3–6). Sample concentrations below 50 ppb are
presented to the low ranges analog outputs and sample concentrations
above 50 ppb are presented to the high ranges analog outputs. When the
low range is active, the status output is at 0 volts. When the high range is
active, the status output is at half of full-scale.
When the high ranges are active, the NOx concentration must drop to 95%
of the low NOx range for the low ranges 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 necessary if the two ranges are not close to one
another. For example, the low NO range is set to 0–50 ppb and the high
NO range is set to 0–20,000 ppb.
Figure 3–6. Analog Output in Auto Range Mode
Thermo Fisher Scientific Model 42i Instruction Manual 3-11
Page 50
Operation
Range Menu
By default, in the auto range mode, the analog outputs are arranged on the
rear panel connector as shown in Figure 3–7. See Table 3–4 for channels
and pin connections. Auto range mode may be selected from the “Range
Mode Select” on page 3-76.
Figure 3–7. Pin-Out of Rear Connector in Auto Range Mode
Table 3–4. Default Analog Outputs in Auto Range Mode
Channel Connector Pin I/O Terminal Pin Description
1 14 1 NO Analog Output
2 33 3 NO
3 15 5 NOx Analog Output
4 34 7 Range Status:
5 17 9 None
6 36 11 None
Ground 16, 18, 19, 35, 37 2, 4, 6, 8, 10, 12 Signal Ground
Analog Output
2
half-scale = high range
zero scale = low range
Note All channels are user definable. If any customization has been made
to the analog output configuration, the default selections may not apply.
▲
3-12 Model 42i Instruction Manual Thermo Fisher Scientific
Page 51
Operation
Range Menu
Gas Units
The Gas Units screen defines how the NO, NO2, and NOx concentration
readings are expressed. Gas units of parts per billion (ppb), parts per
million (ppm), micrograms per cubic meter (μg/m3), or milligrams per
cubic meter (mg/m3) are available. The μg/m3 and mg/m3 gas
concentration modes are calculated using a standard pressure of 760
mmHg and a standard temperature of 20 °C.
When switching the selected units from ppb or ppm to μg/m3 or mg/m3,
the analog ranges all default to the highest range in that mode. For
example, when switching from mg/m3 to ppm, all the ranges default to 20
ppm. Therefore, whenever you change units, you should also check the
range settings.
● In the Main Menu, choose Range > Gas Units.
Note If the units change from ppb/ppm to μg/m3/mg/m3 or vice versa, the
instrument should be re-calibrated, particularly if the user’s standard
temperature is different from 20 °C. A display warning will appear that
ranges will be defaulted and calibration parameters reset. ▲
GAS UNITS:
CURRENTLY: PPB
SET TO: UG/M3 ?
AND SET RANGES AND CAL TOX
DEFAULT SETTINGSXXXXXXXXXX
CHANGE VALUE SAVE
RANGE AVG DIAGS ALARM
NO, NO
, and NO
2
Ranges
The NO, NO2, and NOx Ranges screen defines the concentration range of
x
the analog outputs. For example, a NO
analog output to concentrations between 0 and 50 ppb.
NO
2
range of 0–50 ppb restricts the
2
The display shows the current NO, NO2, or NOx range. The next line of
the display is used to change the range. The range screen is similar for the
single, dual, and auto range modes. The only difference between the
screens are the words “High” and “Low” to indicate which range is
displayed. The example below shows the NO range screen in single mode.
For more information about the dual and auto range modes, see “Single
Range Mode”, “Dual Range Mode”, and “Auto Range Mode” earlier in
this chapter.
Thermo Fisher Scientific Model 42i Instruction Manual 3-13
Page 52
Operation
Range Menu
Table 3–5 lists the available operating ranges. Table 3–6 lists the extended
ranges. When switching from standard to extended ranges, the PMT
voltage must be readjusted. For more information about readjusting the
PMT voltage, see Chapter 7, “Servicing”.
● In the Main Menu, choose Range > NO, NO2, or NOx Range.
NO RANGE:
CURRENTLY: 50
SET TO: 100 ?
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
Table 3–5. Standard Ranges
ppb ppm μgm3 mgm3
50 0.05 100 0.1
100 0.10 200 0.2
200 0.20 500 0.5
500 0.50 1,000 1.0
1,000 1.00 2,000 2.0
2,000 2.00 5,000 5.0
5,000 5.00 10,000 10.0
10,000 10.00 20,000 20.0
20,000 20.00 30,000 30.0
C1 C1 C1 C1
C2 C2 C2 C2
C3 C3 C3 C3
3-14 Model 42i Instruction Manual Thermo Fisher Scientific
Page 53
Range Menu
Table 3–6. Extended Ranges
ppb ppm μgm3 mgm3
200 0.2 500 0.5
500 0.5 1,000 1
1,000 1 2,000 2
2,000 2 5,000 5
5,000 5 10,000 10
10,000 10 20,000 20
20,000 20 50,000 50
50,000 50 100,000 100
100,000 100 150,000 150
C1 C1 C1 C1
C2 C2 C2 C2
C3 C3 C3 C3
Operation
Set Custom Ranges
C1, C2, and C3 are custom ranges. For more information about custom
ranges, see “Set Custom Ranges” below.
The Set Custom Ranges menu lists three custom ranges, which are userdefined. In the standard range mode, any value between 50 ppb (0.05
ppm) and 20,000 ppb (20 ppm) can be specified as a range. In the μg/m3
(mg/m3) mode, any value between 100 μg/m3 (0.1 mg/m3) and 30,000
μg/m3 (30 mg/m3) can be specified as a range. In the extended range mode,
any value between 200 ppb (0.02 ppm) and 100,000 ppb (100 ppm) can
be specified as a range. In the μg/m3 (mg/m3) mode, any value between 500
3
(0.5 mg/m3) and 150,000 μg/m3 (150 mg/m3) can be specified as a
μg/m
range.
● In the Main Menu, choose Range > Set Custom Ranges.
CUSTOM RANGES:
>CUSTOM RANGE 1 55.6
CUSTOM RANGE 2 75.0
CUSTOM RANGE 3 125.0
RANGE AVG DIAGS ALARM
Thermo Fisher Scientific Model 42i Instruction Manual 3-15
Page 54
Operation
Averaging Time
Custom Ranges
Averaging Time
The Custom Ranges screen is used to define the custom ranges.
The display shows the current custom range. The next line of the display is
used to set the range. To use the custom full-scale range, be sure to select it
(Custom range 1, 2, or 3) in the NO, NO2, or NOx Ranges screen. For
more information about selecting ranges, see “NO, NO2, and NOx
Ranges” above.
● In the Main Menu, choose Range > Set Custom Ranges > Custom
Range 1, 2, or 3.
CUSTOM RANGE 1:
CURRENTLY: 55.6
SET TO: 000055.7 ?
MOVE CURSOR
CHANGE VALUE SAVE
RANGE AVG DIAGS ALARM
The Averaging Time defines a time period (10 to 300 seconds) over which
NO, NO2, and NOx measurements are taken. The average concentration of
the NO, NO2, and NOx 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. An averaging time of 10
seconds, for example, means that the average concentration of the last 10
seconds will be output at each update. An averaging time of 300 seconds
means that the moving average concentration of the last 300 seconds will
be 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.
The Averaging Time screen for the single range mode is shown below. In
the dual and auto range modes, an Averaging Time Menu is displayed
before the averaging time screens. This additional menu is needed because
the dual and auto range modes have two averaging times (high and low).
The Averaging Time screen functions the same way in the single, dual, and
auto range modes. The following averaging times are available: 10, 20, 30,
60, 90, 120, 180, 240, and 300 seconds. Additional averaging times are
available in NO and NOx modes: 1, 2, and 5 seconds. For more
information about the manual mode, see “Auto/Manual Mode” later in this
chapter.
● In the Main Menu, choose Averaging Time.
3-16 Model 42i Instruction Manual Thermo Fisher Scientific
Page 55
Operation
Calibration Factors Menu
AVERAGING TIME:
CURRENTLY: 30 SEC
SET TO: 10 SEC ?
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
Calibration Factors
Menu
CALIBRATION FACTORS:
>NO BKG 0.0
NOx BKG 0.0
NO COEF 1.000
NO2 COEF 1.000
NOx COEF 1.000
RANGE AVG DIAGS ALARM
RESET USER CAL DEFAULTS LO NO COEF 1.000
Calibration factors are used to correct the NO, NO2, and NOx
concentration readings that the instrument generates using its own internal
calibration data. The Calibration Factors menu displays the calibration
factors. The screens below show the calibration factors menu in single
mode and dual/auto range modes. The only difference between the screens
are the words “HI” and “LO” to indicate which range is displayed.
Normally, the calibration factors are calculated automatically using the
functions described in “Calibration” menu later in this chapter. However,
the calibration factors can also be set manually using the functions in this
menu.
● In the Main Menu, choose Calibration Factors.
CALIBRATION FACTORS:
>NO BKG 0.0
NOx BKG 0.0
HI NO COEF 1.000
HI NO2 COEF 1.000
HI NOx COEF 1.000
RANGE AVG DIAGS ALARM
LO NO2 COEF 1.000
LO NOx COEF 1.000
RESET USER CAL DEFAULTS
NO and NOx Backgrounds
The NO and NOx background corrections are determined during zero
calibration. 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. Although the background is expressed in terms of
concentration, the background signal is actually the combination of
electrical offsets, PMT dark currents, and trace substances undergoing
chemiluminescence. Before the analyzer sets the NO and NO
readings to
x
zero, it stores these values as the NO and NOx background corrections,
respectively. The NO
Thermo Fisher Scientific Model 42i Instruction Manual 3-17
background correction is determined from the NO
2
Page 56
Operation
Calibration Factors Menu
and NOx background corrections and is not displayed. The background
corrections are typically below 15 ppb.
The NO and NOx Background screens are used to perform a manual zero
calibration of the instrument. Before performing a manual zero adjustment,
allow the analyzer to sample zero air until stable readings are obtained. The
NO channel should be calibrated first. Both the NO and NOx Background
screens operate the same way. Therefore, the following description of the
NO background applies to the NOx background screen as well. The first
line of the display shows the current NO reading. The second line of the
display shows the NO background correction that is stored in memory.
The NO background correction is a value, expressed in the current gas
units, that is subtracted from the NO reading to produce the NO reading
that is displayed.
In the example below, the analyzer is displayed 4.4 ppb of NO while
sampling zero air. A background correction is 0.0 ppb means that 0 ppb is
being subtracted from the NO concentration being displayed. Therefore,
the background correction must be increased to 4.4 ppb in order for the
NO reading to be at 0 ppb, that is, a NO reading of 4.4 ppb minus a NO
background reading of 4.4 ppb gives the corrected NO reading of 0 ppb.
To set the NO reading in the following example to zero, use to
increment the NO background correction to 4.4 ppb. As the NO
background correction is increased, the NO concentration is decreased.
Note that at this point, pressing and has no affect on the
analog outputs or the stored NO background correction of 0.0 ppb. A
question mark following both the NO reading and the NO background
correction indicates that these are proposed changes as opposed to
implemented changes. To escape this screen without saving any changes,
press to return to the Calibration Factors menu or to return
to the Run screen. Press to actually set the NO reading to 0 ppb and
store the new background correction of 4.4 ppb. Then the question mark
prompt beside the NO reading disappears.
● In the Main Menu, choose Calibration Factors > NO or NOx Bkg.
NO BACKGROUND:
NO: 4.4
SET BKG TO: 0.00 ?
INC/DEC
SAVE VALUE
RANGE AVG DIAGS ALARM
3-18 Model 42i Instruction Manual Thermo Fisher Scientific
Page 57
Operation
Calibration Factors Menu
NO, NO2, and NO
Coefficients
x
The NO, NO2, and NOx span coefficients are usually calculated by the
instrument processor during calibration. The span coefficients are used to
correct the NO, NO2, and NOx readings. The NO and NOx span
coefficients normally has a value near 1.000. The NO2 span coefficient
normally has a value between 0.95 and 1.050.
The NO, NO2, and NOx Coefficient screens allow the NO, NO2, and
NOx span coefficients to be manually changed while sampling span gas of
known concentration. The NO, NO2, and NOx Coefficient screens operate
the same way. Therefore, the following description of the NO coefficient
screen applies to the NO2, and NOx coefficient screens as well.
The display shows the current NO concentration reading. The next line of
the display shows the NO span coefficient that is stored in memory and is
being used to correct the NO concentration. Notice that as the span
coefficient value is changed, the current NO concentration reading on the
above line also changes. However, no actual changes are made to the value
stored in memory until is pressed. Only proposed changes, as
indicated by a question mark prompt, are displayed until is pressed.
In dual or auto range modes, “HIGH” or “LOW” is displayed to indicate
the calibration of the high or low coefficient. The example below shows the
coefficient screen in dual/auto range mode.
Reset User Calibration
Defaults
Note The screen will show “SPAN CONC NOT VALID” if the
coefficient change causes the concentration to be either higher than the
selected range or less than or equal to zero. ▲
● In the Main Menu, choose Calibration Factors > NO, NO2, or NOx
Coef.
NO COEFFICIENT:
NO: 51.4
SET COEF TO: 1.000
INC/DEC
SAVE VALUE
RANGE AVG DIAGS ALARM
The Reset User Calibration Defaults screen allows the user to reset the
calibration factors to factory defaults.
● In the Main Menu, choose Calibration Factors > Reset User Cal
Defaults.
Thermo Fisher Scientific Model 42i Instruction Manual 3-19
Page 58
Operation
Calibration Menu
RESTORE DEFAULT CAL:
RESTORE
RANGE AVG DIAGS ALARM
Calibration Menu
RESTORE DEFAULT CAL:
RESTORE
ARE YOU SURE YOU WANT TO?x
PRESS TO CONFIRM RESTORE
RANGE AVG DIAGS ALARM
The Calibration menu is used to automatically set the zero background of
NO and NOx, and the NO, NO2, and NOx span coefficients. The screens
below show the calibration menu in single mode and dual/auto range
modes. The zero/span check is visible only if the zero/span option is
installed.
The calibration procedure is the same in dual, auto, or single range,
however, there are two sets of gas coefficients in dual or auto range (i.e. low
and high coefficients). This enables 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.
CALIBRATION:
>CAL NO BACKGROUND
CAL NOx BACKGROUND
CAL NO COEFFICIENT
CAL NO2 COEFFICIENT
CAL NOx COEFFICIENT
RANGE AVG DIAGS ALARM
ZERO/SPAN CHECK CAL LO NO COEFFICIENT
Calibrate NO and NO
Backgrounds
● In the Main Menu, choose Calibration.
CALIBRATION:
>CAL NO BACKGROUND
CAL NOx BACKGROUND
CAL HI NO COEFFICIENT
CAL HI NO2 COEFFICENT
CAL HI NOx COEFFICIENT
RANGE AVG DIAGS ALARM
CAL HI NO2 COEFFICENT
CAL HI NOx COEFFICENT
The Calibrate NO and NOx Background screens are used to adjust the
x
ZERO/SPAN CHECK
instrument zero, or background. Before making an adjustment, be sure the
analyzer samples zero air until the readings stabilize. The display shows the
current NO or NOx reading.
It is important to note the averaging time when calibrating. The longer the
averaging time, the more accurate the calibration will be. To be most
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Operation
Calibration Menu
accurate, use the 300-second averaging time. For more information about
calibration, see Chapter 4, “Calibration”.
● In the Main Menu, choose Calibration > Calibrate NO or NOx
Background.
NO BACKGROUND:
NO: 1.2
CURRENTLY: 0.00 ?
SET CO TO ZERO
RANGE AVG DIAGS ALARM
Calibrate NO, NO2, and
NOx Coefficients
The Calibrate NO Coefficient screen is used to adjust the NO span
concentration while sampling span gas of known concentration. All
calibration screens operate the same way. Therefore, the following
description of the NO calibration screen applies to the NO2 and NOx
calibration screens as well.
The display shows the current NO concentration reading and the current
NO range. The next line of the display is where the NO calibration gas
concentration is entered.
It is important to note the averaging time when calibrating. The longer the
averaging time, the more accurate the calibration will be. To be most
accurate, use the 300-second averaging time. For more information about
calibration, see Chapter 4, “Calibration”.
● In the Main Menu, choose Calibration > Cal NO, NO2 or NOx
Coefficient.
CALIBRATE NO:
NO: 25.5
SPAN CONC: 0001.000 ?
MOVE CURSOR
CHANGE VALUE SAVE
RANGE AVG DIAGS ALARM
Zero/Span Check
The Zero/Span Check menu is available only if the zero/span valve option
is installed. It is used to program the instrument to perform fully
automated zero and span checks or adjustments.
● In the Main Menu, choose Calibration > Zero/Span Check.
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Operation
Calibration Menu
ZERO/SPAN CHECK:
>NEXT TIME 01Jan06 12:00
PERIOD HR 24
TOTAL DURATION HR 1.5
ZERO DURATION MIN 30
SPAN DURATION MIN 30
RANGE AVG DIAGS ALARM
PURGE DURATION MIN 30
ZERO/SPAN AVG SEC 60
ZERO CAL RESET ON
SPAN CAL RESET OFF
ZERO/SPAN RATIO 1
Next Time
The Next Time screen is used to view and set the initial date and time (24hour format) of the zero/span check. Once the initial zero/span check is
performed, the date and time of the next zero/span check is calculated and
displayed.
● In the Main Menu, choose Calibration > Zero/Span Check > Next
Time.
NEXT DATE AND TIME:
19 MAR 2007 12:34
PRESS TO EDIT
RANGE AVG DIAGS ALARM
Period Hours
The Period Hours screen defines the period or interval between zero/span
checks. Periods between 0 and 999 hours are acceptable. To turn the
zero/span check off, set the period to 0.
NEXT DATE AND TIME:
19 MAR 2007 12:34 ?
SETTING: DAYS
SET MONTHS
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
● In the Main Menu, choose Calibration > Zero/Span Check > Period
HR.
ZERO/SPAN PERIOD:
CURRENTLY: 024 HRS
SET TO: 025 HRS ?
MOVE CURSOR
CHANGE VALUE SAVE
RANGE AVG DIAGS ALARM
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Operation
Calibration Menu
Total Duration Hour
Zero/Span/Purge
Duration Minutes
The Total Duration Hour line is the sum of the zero, span, and purge
duration minutes, and is for viewing only.
The Zero Duration Minutes screen defines how long zero air is sampled by
the instrument. The Span and Purge Duration Minutes screens look and
function the same way as the zero duration screen. The span duration
screen is used to set how long the span gas is sampled by the instrument.
The purge duration screen is used to set how long the purge period will be
after doing a zero or span check. This gives the instrument time to flush
out the zero and span gas before any meaningful 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
check occurs the zero check is done first, followed by the span check. To
perform just a zero check, set the span duration to 0 (off). The same applies
to perform just a span check.
● In the Main Menu, choose Calibration > Zero/Span Check > Zero,
Span or Purge Duration Min.
ZERO DURATION:
CURRENTLY: 30 MIN
SET TO: 31 MIN ?
MOVE CURSOR
CHANGE VALUE SAVE
RANGE AVG DIAGS ALARM
Zero/Span Averaging
Time
The Zero/Span Averaging Time screen allows the user to set the zero/span
averaging time. The zero/span averaging time is used by the analyzer only
when performing an automatic zero or span check or adjustment. The
analyzer’s averaging time is used for all other functions. The following
averaging times are available: 1, 2, 5, 10, 20, 30, 60, 90, 120, 180, 240,
and 300 seconds.
● In the Main Menu, choose Calibration > Zero/Span Check >
Zero/Span Avg Sec.
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Operation
Instrument Controls Menu
ZERO/SPAN AVERAGING TIME:
CURRENTLY: 60 SEC
SET TO: 90 SEC ?
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
Zero/Span Calibration
Reset
Zero/Span Ratio
Zero and Span Calibration Reset are toggle items that change between yes
or no when selected, and are displayed only if Auto Calibration is set to
YES in the Instrument Configuration screen in the Diagnostics menu.
If the zero calibration reset line is set to yes, then not only is a zero check
done, but a zero adjustment is made. If the span calibration reset line is set
to yes, then not only is a span check done, but a span adjustment is made.
(This is how to set up a scheduled, recurring auto calibration.)
The Zero/Span Ratio screen is used to set the ratio of zero checks to span
checks. For example, if this value is set to 1, a span check will follow every
zero check. If this value is set to 3, there will be three zero checks between
each span check. This value may be set from 1 to 10, with 1 as default.
● In the Main Menu, choose Calibration > Zero/Span Check >
Zero/Span Ratio.
ZERO/SPAN RATIO:
CURRENTLY: 1:1
SET TO: 2:1 ?
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
Instrument Controls
The Instrument Controls menu contains a number of items that may be
selected to control various instrument operational parameters. The software
Menu
controls listed in this menu enable control of the listed instrument
functions.
● In the Main Menu, choose Instrument Controls.
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Operation
Instrument Controls Menu
INSTRUMENT CONTROLS:
>OZONATOR
PMT SUPPLY
AUTO/MANUAL MODE
DATALOGGING SETTINGS
COMMUNICATION SETTINGS
RANGE AVG DIAGS ALARM
I/O CONFIGURATION
TEMPERATURE COMPENSATION
PRESSURE COMPENSATION
SCREEN CONTRAST
SERVICE MODE
DATE/TIME
TIMEZONE
Ozonator
The Ozonator screen is used to turn the internal ozonator on or off. The
display shows the status of the control line that turns the ozonator on or
off. The next line of the display shows the user-specified ozonator setting.
Under most conditions, the control line status and ozonator set status are
the same. However, as a safety precaution, the microprocessor can override
the user-specified ozonator setting. This occurs only if the ozonator flow
doesn’t indicate any flow or if the NO2 converter temperature is below the
minimum alarm limit. In this case, an alarm is activated and the ozonator is
turned off. This is done to prevent the ozonator from overheating, which
will result in permanent damage to the ozonator, or if the converter
temperature drops below the minimum limit, which reduces the
effectiveness of the ozone destruct.
It is possible, however, to override the ozonator shut-off due to converter
temperature being out of range, by setting the ozonator safety “OFF” in the
“Service Mode”.
Note The ozonator must be “ON” to obtain NO, NO
, and NOx
2
readings. As an additional safety precaution, a lit LED mounted on the
measurement interface board indicates that the ozonator is on.
▲
● In the Main Menu, choose Instrument Controls > Ozonator.
OZONATOR:
CURRENTLY: OFF
SET TO: ON ?
TOGGLE VALUE
RANGE AVG DIAGS ALARM
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Operation
Instrument Controls Menu
PMT Supply
Auto/Manual Mode
The PMT Supply screen is used to turn the PMT power supply on or off.
This is useful in a troubleshooting situation.
● In the Main Menu, choose Instrument Controls > PMT Supply.
PMT SUPPLY:
CURRENTLY: OFF
SET TO: ON ?
TOGGLE VALUE
RANGE AVG DIAGS ALARM
The Auto/Manual Mode screen allows selection of the automatic mode
(NO/NOx), NO mode (manual NO), or NOx mode (manual NOx). The
auto cycle mode switches the mode solenoid valve automatically on a 10
second cycle so that NO, NO2, and NOx concentrations are determined.
The manual NO mode puts the mode solenoid valve into the open position
so that the sample gas bypasses the NO2-to-NO converter. Therefore, only
the NO concentration is determined. The manual NOx mode puts the
mode solenoid valve into the closed position so that the sample gas passes
through the NO2-to-NO converter. Therefore, only the NOx concentration
is determined. In the manual modes, additional averaging times of 1, 2,
and 5 seconds are available from the Averaging Times screen.
● In the Main Menu, choose Instrument Controls > Auto/Manual
Mode.
MODE:
CURRENTLY: MANUAL NO
SET TO: NO/NOX ?
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
Datalogging Settings
The iSeries instruments include a built-in datalogging capability as a
standard feature. The operator is allowed to create two different types of
records, which for historical reasons, are named lrecs and srecs. Each record
can contain up to 32 different fields, or data items, and records can be
created at user-defined intervals ranging from 1 to 60 minutes.
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Operation
Instrument Controls Menu
Record generation is tied to the instrument’s real-time clock. For example,
if the logging period for srecs is set to 30 minutes, a new srec will be
generated on every hour and every half hour (10:00, 10:30, 11:00 …).
Lrecs and srecs function independent of each other. For example, an srec
containing just the current concentration level could be generated every five
minutes while an lrec containing a full set of diagnostic data could be
generated once every hour.
The analyzer's computer system includes three megabytes of flash memory
which is enough to store a full lrec containing 32 data items and a full srec
containing 32 items once each minute for a week (>20,000 total records).
If logging is limited to the minimum content of date, time, concentration
and error flags, the analyzer can store data once each minute for 4 months
(>190,000 total records).
The Datalogging Settings menu allows the user flexibility in how data is
stored and recorded.
● In the Main Menu, choose Instrument Controls > Datalogging
Settings.
Select Srec/Lrec
DATALOGGING SETTINGS:
>SELECT SREC/LREC SREC
VIEW LOGGED DATA
ERASE LOG
SELECT CONTENT
COMMIT CONTENT
RANGE AVG DIAGS ALARM
RESET TO DEFAULT CONTENT
CONFIGURE DATALOGGING
The Select Srec/Lrec screen is used to select the log record type for other
operations in this menu.
● In the Main Menu, choose Instrument Controls > Datalogging Settings
> Select Srec/Lrec.
SELECT LOG TYPE:
CURRENTLY: SREC
SET TO: LREC ?
TOGGLE VALUE
RANGE AVG DIAGS ALARM
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Operation
Instrument Controls Menu
View Logged Data
Number of Records
The View Logged Data screen is used to select the starting point to view
the logged data by the number of records or by date and time. Note that
both types of records cannot be viewed at the same time, only the selected
record type.
● In the Main Menu, choose Instrument Controls > Datalogging Settings
> View Logged Data.
SELECT START POINT BY:
SET TO: # OF RECS
CHANGE ACCEPT
RANGE AVG DIAGS ALARM
The Number of Records screen is used to select the number of records to
view, ending with the most recent. It also shows the total number of
records that have been logged for the selected record type.
Date and Time
SET # BACK FROM CURRENT:
0000000
TOTAL LRECS: 20
MOVE CURSOR
CHANGE VALUE SAVE
RANGE AVG DIAGS ALARM
The Record Display screen (read only) displays the selected records.
time date flags
10:01 01/20/07 FC0088900
10:02 01/20/07 FC0088900
10:03 01/20/07 FC0088900
10:04 01/20/07 FC0088900
PGUP/DN PAN L/R
RANGE AVG DIAGS ALARM
The Date and Time screen is used to set a start date and time for which to
view logged data. For example, if “20 Jan 2007 10:00” is entered, then the
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Operation
Instrument Controls Menu
first logged data record that is displayed is the first record after this time. If
set to one minute logging, this would be at “20 Jan 2007 10:01”.
DATE AND TIME:
20 JAN 2007 10:00
CHG DAYS
SET CURSOR TO MONTHS
ACCEPT AS SHOWN
RANGE AVG DIAGS ALARM
The Record Display screen (read only) displays the selected records.
time date flags
10:01 01/20/07 FC0088900
10:02 01/20/07 FC0088900
10:03 01/20/07 FC0088900
10:04 01/20/07 FC0088900
PGUP/DN PAN L/R
RANGE AVG DIAGS ALARM
Erase Log
The Erase Log screen is used to erase all saved data for the selected record
type only (not both srecs and lrecs).
● In the Main Menu, choose Instrument Controls > Datalogging Settings
> Erase Log.
ERASE LREC LOG FILE DATA?
ERASE
RANGE AVG DIAGS ALARM
Select Content
The Select Content submenu displays a list of 32 record fields to use to
configure the data to be logged. When a field is selected, a submenu list
appears of the items to choose from to assign to those fields. Item types are
Concentrations, Other Measurements, and Analog Inputs (if the I/O
expansion board is installed). These record fields comprise a temporary list
of items for the selected record type that must be committed via the
ERASE LREC LOG FILE DATA?
ERASE
ARE YOU SURE YOU WANT TO?x
PRESS TO CONFIRM ERASURE
RANGE AVG DIAGS ALARM
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Operation
Instrument Controls Menu
datalogging menu before the changes will apply. Note that committing any
changes to this list will erase all currently logged data for the selected record
type only, as the format of the stored data is changed.
● In the Main Menu, choose Instrument Controls > Datalogging Settings
> Select Content.
LREC FIELDS:
>FIELD 1 NO
FIELD 2 NOX
FIELD 3 PRES
FIELD 4 PMTT
FIELD 5 INTT
RANGE AVG DIAGS ALARM
Choose Field Data
Concentrations
The Choose Field Data submenu displays a list of the types of data that can
be logged for the current field. Choices are Concentrations, Other
Measurements, and Analog Inputs (if the I/O expansion board is installed).
● In the Main Menu, choose Instrument Controls > Datalogging Settings
> Select Content > Field 1–32.
DATA IN SREC FIELD 1:
>CONCENTRATIONS
OTHER MEASUREMENTS
ANALOG INPUTS
RANGE AVG DIAGS ALARM
Note The ANALOG INPUTS item is only displayed if the I/O expansion
board option is intalled. ▲
The Concentrations screen allows the user to assign one of the
concentrations to the selected record field. The selected item is shown by
“<--” after it. Note that at this point, pressing
indicates that these are
proposed changes as opposed to implemented changes. To change the
selected record format and erase record log file data, see “Commit
Content” below. Range (NOx) is only visible in auto range mode.
● In the Main Menu, choose Instrument Controls > Datalogging Settings
> Select Content > select Field > Concentrations.
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Operation
Instrument Controls Menu
CONCENTRATIONS:
>NONE
NO <- NO2
NOx
LO NO
RANGE AVG DIAGS ALARM
LO NO2
LO NOx
HI NO
HI NO2
HI NOx
RANGE (NOX)
Other Measurements
The Other Measurements screen allows the user to assign one of the other
available measurement types to the selected record field. The selected item
is shown by “<--” after it. Note that at this point, pressing indicates
that these are proposed changes as opposed to implemented changes. To
change the selected record format and erase record log file data, see
“Commit Content” below. BKG and COEF items are displayed only if
Ouput Conc Cal option is set to YES in the Instrument Configuration
screen.
● In the Main Menu, choose Instrument Controls > Datalogging Settings
> Select Content > select Field > Other Measurements.
OTHER MEASUREMENTS:
>NONE
INT TEMP
CHAMBER TEMP
COOLER TEMP
NO2 CNV TEMP
RANGE AVG DIAGS ALARM
PERM OVN GAS
PERM OVN HTR
CHAMBER PRES
FLOW
PMT VOLTS
NO BKG
NOx BKG
LO NO COEF
LO NO2 COEF
LO NOx COEF
HI NO COEF
HI NO2 COEF
HI NOx COEF
OZONATOR FLOW
EXT ALARMS
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Operation
Instrument Controls Menu
Analog Inputs
Commit Content
The Analog Inputs screen allows the user to select the parameter (none or
analog inputs 1–8) to the selected record field. The selected item is shown
by “<--” after it. Note that at this point, pressing indicates that these
are proposed changes as opposed to implemented changes. To change the
selected record format and erase record log file data, see “Commit
Content” below. The analog inputs 1–8 will not show if the Ouput Conc
Cal option is set to YES in the Instrument Configuration screen.
● In the Main Menu, choose Instrument Controls > Datalogging Settings
> Select Content > select Field > Analog Inputs.
ANALOG INPUTS:
>NONE
ANALOG IN 1
ANALOG IN 2
ANALOG IN 3
ANALOG IN 4
RANGE AVG DIAGS ALARM
The Commit Content screen is used to save any changes that have been
made to any of the record fields for the selected record type. Saving changes
will erase record log file data for that record type. If no changes have been
made “NO CHANGES TO RECORD LIST!” will appear. For more
information about selecting the content of logged data fields, see “Select
Content” above.
● In the Main Menu, choose Instrument Controls > Datalogging Settings
> Commit Content.
CHANGE LREC DATA AND
ERASE LREC LOG FILE DATA?
COMMIT
RANGE AVG DIAGS ALARM
Reset to Default Content
CHANGE LREC DATA AND
ERASE LREC LOG FILE DATA?
COMMIT
ARE YOU SURE YOU WANT TO?x
PRESS TO CONFIRM ERASURE
RANGE AVG DIAGS ALARM
The Reset to Default Content screen is used to reset all of the datalogging
field items to default values for the selected record type. For more
information about selecting the content of logged data fields, see “Select
Content” above.
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Operation
Instrument Controls Menu
● In the Main Menu, choose Instrument Controls > Datalogging Settings
> Reset to Default Content.
RESET LREC DATA AND
ERASE LREC LOG FILE DATA?
RESET
RANGE AVG DIAGS ALARM
Configure Datalogging
RESET LREC DATA AND
ERASE LREC LOG FILE DATA?
RESET
ARE YOU SURE YOU WANT TO?x
PRESS TO CONFIRM RESETxx
RANGE AVG DIAGS ALARM
The Configure Datalogging menu deals with datalogging configuration for
the currently selected record type.
● In the Main Menu, choose Instrument Controls > Datalogging Settings
> Configure Datalogging.
DATALOGGING SETTINGS:
>LOGGING PERIOD MIN 60
MEMORY ALLOCATION % 50
DATA TREATMENT AVG
RANGE AVG DIAGS ALARM
Logging Period Min
The Logging Period Min screen is used to select the logging period in
minutes for the selected record format (srec or lrec). List of choices include:
off, 1, 5, 15, 30, and 60 minutes (default).
● In the Main Menu, choose Instrument Controls > Datalogging Settings
> Configure Datalogging > Logging Period Min.
SET PERIOD FOR SREC:
CURRENTLY: 60 MIN
SET TO: OFF MIN ?
CHANGE VALUE SAVE
Memory Allocation
Percent
Thermo Fisher Scientific Model 42i Instruction Manual 3-33
The Memory Allocation Percent screen is used to select the percentage of
total memory that may be used by the selected record type (lrecs or srecs).
RANGE AVG DIAGS ALARM
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Operation
Instrument Controls Menu
Percentages between 0 and 100% are available in increments of 10.
Changing this value results in log erasure for both types of records, and
changing the percent allocated to one record type will automatically change
the other.
● In the Main Menu, choose Instrument Controls > Datalogging Settings
> Configure Datalogging > Memory Allocation %.
SET PERCENT LRECS:
CURRENTLY: 50%
SET TO: 60% ?
CHANGE VALUE SAVE
RANGE AVG DIAGS ALARM
Data Treatment
The Data Treatment screen is used to select the data type for the selected
record type: whether the data should be averaged over the interval, the
minimum or maximum measured during the interval, or the current value
(last value measured). Data treatment doesn’t apply to all data, just to the
concentration measurement. All other data points log the current value at
the end of the interval.
Note This feature is found in all iSeries instruments, but it is
recommended that the data type be set to ONLY the current value (cur), as
the datalogging averaging is done in addition to the normal concentration
averaging. ▲
SET PERCENT LRECS:
CURRENTLY: 50%
SET TO: 60% ?
THIS WILL ERASE ALL LOGS!x
PRESS TO CONFIRM CHANGE
RANGE AVG DIAGS ALARM
● In the Main Menu, choose Instrument Controls > Datalogging Settings
> Configure Datalogging > Data Treatment.
SET LREC DATA TYPE:
CURRENTLY: AVG
SET TO: CUR ?
CHANGE VALUE SAVE
Communication
Settings
3-34 Model 42i Instruction Manual Thermo Fisher Scientific
The Communication Settings menu is used for communications control
and configuration.
RANGE AVG DIAGS ALARM
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Operation
Instrument Controls Menu
● In the Main Menu, choose Instrument Controls > Communication
Settings.
COMMUNICATION SETTINGS:
>SERIAL SETTINGS
INSTRUMENT ID
COMMUNICATION PROTOCOL
STREAMING DATA CONFIG
TCP/IP SETTINGS
RANGE AVG DIAGS ALARM
Serial Settings
Baud Rate
The Serial Setting submenu is used for serial communications control and
configuration.
● In the Main Menu, choose Instrument Controls > Communication
Settings > Serial Settings.
SERIAL SETTINGS:
>BAUD RATE 9600
DATA BITS 8
PARITY NONE
STOP BITS 1
RS-232/485 SEL RS-232
RANGE AVG DIAGS ALARM
The Baud Rate screen is used to set the RS-232/RS-485 interface baud rate.
Baud rates of 1200, 2400, 4800, 9600, 19200, 38400, 57600, and 115200
are available. The analyzer’s default baud rate is set to 9600 to provide
backwards compatibility with the older C-series analyzers.
● In the Main Menu, choose Instrument Controls > Communication
Settings > Serial Settings > Baud Rate.
BAUD RATE:
CURRENTLY: 9600
SET TO: 19200 ?
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
Data Bits
The Data Bits screen is used to set the number of serial data bits to either 7
or 8 (default).
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Operation
Instrument Controls Menu
● In the Main Menu, choose Instrument Controls > Communication
Settings > Serial Settings > Data Bits.
DATA BITS:
CURRENTLY: 8
SET TO: 7 ?
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
Parity
Stop Bits
The Parity screen is used to select the parity bit for the serial port to None
(default), Even, or Odd.
● In the Main Menu, choose Instrument Controls > Communication
Settings > Serial Settings > Parity.
PARITY:
CURRENTLY: NONE
SET TO: ODD ?
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
The Stop Bits screen is used to set the number of stop bits for the serial
port to 1 (default) or 2.
● In the Main Menu, choose Instrument Controls > Communication
Settings > Serial Settings > Stop Bits.
STOP BITS:
CURRENTLY: 1
SET TO: 2 ?
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
RS-232/RS-485 Selection
The RS-232/RS-485 Selection screen allows the user to choose between the
RS-232 or RS-485 specification for serial communication.
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Operation
Instrument Controls Menu
Equipment Damage Disconnect the serial cable before changing the RS232 and RS-485 selection to prevent damage to any equipment currently
connected to the analyzer. ▲
● In the Main Menu, choose Instrument Controls > Communication
Settings > Serial Settings > RS-232/485 Selection.
RS-232/RS-485 SELECTION:
XXXXXX** WARNING **XXXXXXX
DISCONNECT THE SERIALX X
CABLES BEFORE CHANGING X
THE SELECTION!XXXXXX
TO CONTINUE
RANGE AVG DIAGS ALARM
Instrument ID
The Instrument ID screen allows the operator to edit the instrument ID
number. The ID is used to identify the instrument when using the C-Link
or MODBUS protocols to control the instrument or collect data. It may be
necessary to edit the ID number if two or more instruments of the same
model are connected to one computer. Valid Instrument ID numbers are
from 0 to 127. The Model 42i has a default Instrument ID of 42. For
more information about the Instrument ID, see Appendix B “C-Link
Protocol Commands” or Appendix C “MODBUS Protocol”.
● In the Main Menu, choose Instrument Controls > Communication
Settings > Instrument ID.
RS-232/RS-485 SELECTION:
CURRENTLY: RS-232
SET TO: RS-485 ?
MAKE SURE THAT THE CABLEXX
IS OFF: PRESS TO CONFIRM
TOGGLE VALUE
RANGE AVG DIAGS ALARM
INSTRUMENT ID:
CURRENTLY: 42
SET TO: 50 ?
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
Communication Protocol
The Communication Protocol screen is used to change the protocol for
serial communications. Possible choices include: C-Link, MODBUS,
Geysitech, and Streaming Data.
● In the Main Menu, choose Instrument Controls > Communication
Settings > Communication Protocol.
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Operation
Instrument Controls Menu
COMMUNICATION PROTOCOL:
CURRENTLY: CLINK
SET TO: STREAMING ?
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
Streaming Data Configuration
The Streaming Data Configuration menu is used to allow for configuration
of the 8 streaming data output items, streaming interval, current data
format, and current timestamp setting. The Choose Stream Data submenu
displays a list of the analog output signal group choices to choose from.
Choices are Concentrations, Other Measurements, and Analog Inputs (if
the I/O expansion board option is installed).
Note The selected item list is different depending on the
AUTO/MANUAL MODE and RANGE MODE settings. Changing
either of these settings will produce a different set of streaming data items.
If either of these modes is going to be changed on a regular basis, then the
user must configure each set of data separately after changing the modes to
each setting. ▲
● In the Main Menu, choose Instrument Controls > Communication
Settings > Streaming Data Config.
STREAMING DATA CONFIG
>INTERVAL 10 SEC
ADD LABELS NO
PREPEND TIMESTAMP YES
ADD FLAGS YES
ITEM 1 NO
RANGE AVG DIAGS ALARM
Streaming Data Interval
The Streaming Data Interval screen is used to adjust how frequently a new
record will be generated. The following interval times are available: 1, 2, 5,
10, 20, 30, 60, 90, 120, 180, 240, and 300 seconds.
● In the Main Menu, choose Instrument Controls > Communication
Settings > Streaming Data Config > Interval.
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Instrument Controls Menu
STREAMING DATA INTERVAL:
CURRENTLY: 10 SEC
SET TO: 20 SEC ?
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
Note Add Labels, Prepend Timestamp, and Add Flags are toggle items that
change between yes or no when selected. ▲
Choose Stream Data
Concentrations
The Choose Stream Data screen displays a list of the types of data that can
be sent via streaming data. Choices are Concentrations, Other
Measurements, and Analog Inputs (if the I/O expansion board is installed).
● In the Main Menu, choose Instrument Controls > Communication
Settings > Streaming Data Config > Item 1–8.
CHOOSE STREAM DATA:
>CONCENTRATIONS
OTHER MEASUREMENTS
ANALOG INPUTS
RANGE AVG DIAGS ALARM
The Concentrations screen allows the user to assign one of the
concentrations to the selected streaming data item. The currently selected
item is shown by “<--” after it. Once an item is selected, pressing
will save the selected streaming data item. In dual or auto range mode,
“HI” or “LO” is displayed to indicate high or low range concentrations.
Rang (NOx) is visible only in auto range mode.
● In the Main Menu, choose Instrument Controls > Communication
Settings > Streaming Data Config > select Item > Concentrations.
CONCENTRATIONS:
>NONE
NO <--
NO2
NOx
RANGE (NOX)
RANGE AVG DIAGS ALARM
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Operation
Instrument Controls Menu
Other Measurements
The Other Measurements screen allows the user to assign one of the other
available measurement types to the selected streaming data item. The
currently selected item is shown by “<--” after it. Once an item is selected,
pressing will save the selected streaming data item. BKG and COEF
items are displayed only if Ouput Conc Cal option is set to YES in the
Instrument Configuration screen.
● In the Main Menu, choose Instrument Controls > Communication
Settings > Streaming Data Config > Select Item > Other
Measurements.
OTHER MEASUREMENTS:
>NONE
INT TEMP
CHAMBER TEMP
COOLER TEMP
NO2 CNV TEMP
RANGE AVG DIAGS ALARM
CHAMBER PRES
FLOW
PMT VOLTS
NO BKG
NOx BKG
LO NO COEF
LO NO2 COEF
LO NOx COEF
HI NO COEF
HI NO2 COEF
HI NOx COEF
OZONATOR FLOW
EXT ALARMS
Analog Inputs
The Analog Inputs screen allows the user to assign an analog input signal
(none or analog inputs 1–8) to the selected streaming data item. The
currently selected item is shown by “<--” after it. Once an item is selected,
pressing will save the selected streaming data item. The analog
inputs 1–8 will not show if the Ouput Conc Cal option is set to YES in the
Instrument Configuration screen.
● In the Main Menu, choose Instrument Controls > Communication
Settings > Streaming Data Config > Select Item > Analog Inputs.
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Operation
Instrument Controls Menu
ANALOG INPUTS:
>NONE
ANALOG IN 1
ANALOG IN 2
ANALOG IN 3
ANALOG IN 4
RANGE AVG DIAGS ALARM
TCP/IP Settings
Use DHCP
The TCP/IP Settings menu is used for defining parameters that are
required for Ethernet communications.
Note The instrument power must be cycled after any of these parameters
have been changed for the change to take effect. ▲
● In the Main Menu, choose Instrument Controls > Communication
Settings > TCP/IP Settings.
TCP/IP SETTINGS:
>USE DHCP OFF
IP ADDR 10.209.43.237
NETMASK 255.255.254.0
GATEWAY 10.209.42.1
HOST NAME iSeries
RANGE AVG DIAGS ALARM
NTP SVR 10.209.43.237
The Use DHCP screen is used to specify whether to use Dynamic Host
Configuration Protocol (DHCP) or not. When DHCP is enabled, the
network dynamically provides an IP address for the instrument.
● In the Main Menu, choose Instrument Controls > Communication
Settings > TCP/IP Settings > Use DCHP.
DHCP:
CURRENTLY: OFF
SET TO: ON ?
TOGGLE VALUE
CYCLE POWER TO CHANGE DHCP
RANGE AVG DIAGS ALARM
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Operation
Instrument Controls Menu
IP Address
Netmask
The IP Address screen is used to edit the IP address. The IP address can
only be changed when DHCP is off. If DHCP is on, the instrument will
respond with “NOT SETTABLE IF DHCP IS ON”. For more
information on DHCP, see “Use DHCP” above.
● In the Main Menu, choose Instrument Controls > Communication
Settings > TCP/IP Settings > IP Address.
IP ADDRESS:
CURRENT: 10.209.43.237
SET TO: 10.209.43.237 1
MOVE CURSOR
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
The Netmask screen is used to edit the netmask. The netmask is used to
determine the subnet on which the instrument can directly communicate
to other devices. The netmask can only be changed when DHCP is off. If
DHCP is on, the instrument will respond with “NOT SETTABLE IF
DHCP IS ON”. For more information on DHCP, see “Use DHCP”
above.
Default Gateway
● In the Main Menu, choose Instrument Controls > Communication
Settings > TCP/IP Settings > Netmask.
NETMASK:
CURRENT: 255.255.254.0
SET TO: 255.255.254.0 0
MOVE CURSOR
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
The Default Gateway screen is used to edit the gateway address. The
default gateway can only be changed when DHCP is off. If DHCP is on,
the instrument will respond with “NOT SETTABLE IF DHCP IS ON”.
For more information on DHCP, see “Use DHCP” above. Any traffic to
addresses that are not on the local subnet will be routed through this
address.
● In the Main Menu, choose Instrument Controls > Communication
Settings > TCP/IP Settings > Gateway.
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Hos
t
Name
Operation
Instrument Controls Menu
DEFAULT GATEWAY:
CURRENT: 10.209.42.1
SET TO: 10.209.42.1 1
MOVE CURSOR
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
The Host Name screen is used to edit the host name. When DHCP is
enabled, this name is reported to the DHCP server.
● In the Main Menu, choose Instrument Controls > Communication
Settings > TCP/IP Settings > Host Name.
HOST NAME:
CURRENT: ISERIES
ISERIES SSSSS ?
ABCDEFGHIJKLMN BKSP
OPQRSTUVWXYZ PAGE
0123456789 ./- SAVE
RANGE AVG DIAGS ALARM
Network Time Protocol
Server
I/O Configuration
The Network Time Protocol (NTP) Server screen is used to edit the IP
address of the NTP server. An NTP server may be used to periodically
synchronize the instrument’s real-time clock with a standard. More
information about the NTP servers and a list of public servers may be
found at http://www.ntp.org.
● In the Main Menu, choose Instrument Controls > Communication
Settings > TCP/IP Settings > NTP Svr.
NTP SERVER IP ADDRESS:
CURRENT: 10.209.43.237
SET TO: 10.209.43.237 1
MOVE CURSOR
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
The I/O Configuration menu deals with configuration of the analyzer’s
I/O system. The analog input configuration is displayed only if the I/O
expansion board option is installed.
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Operation
Instrument Controls Menu
● In the Main Menu, choose Instrument Controls > I/O Configuration.
I/O CONFIGURATION:
>OUTPUT RELAY SETTINGS
DIGITAL INPUT SETTINGS
ANALOG OUTPUT CONFIG
ANALOG INPUT CONFIG
RANGE AVG DIAGS ALARM
Output Relay Settings
Logic State
The Output Relay Settings menu displays a list of the 10 digital output
relays available, and allows the user to select the logic state or instrument
parameter for the relay selected.
Note The digital outputs may take up to one second after the assigned
state occurs to show up on the outputs. ▲
● In the Main Menu, choose Instrument Controls > I/O Configuration >
Output Relay Settings.
OUTPUT RELAY SETTINGS:
>1 NOP GEN ALARM
2 NOP LOCAL/REMOTE
3 NOP UNITS
4 NOP CONC ALARM
5 NOP NONE
RANGE AVG DIAGS ALARM
The Logic State menu item is used to change the selected I/O relay to
either normally open or normally closed. The default state is open, which
indicates that a relay connected between the digital output pin and ground
is normally open and closes to trigger the digital output action.
● Press to toggle and set the logic state open or closed.
OUTPUT RELAY SETUP:
>LOGIC STATE OPEN
INSTRUMENT STATE
RANGE AVG DIAGS ALARM
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Operation
Instrument Controls Menu
Instrument State
Alarms
The Instrument State submenu allows the user to select the instrument
state that is assigned to the selected relay output. A submenu lists signal
types of either alarm or non-alarm to choose from.
● In the Main Menu, choose Instrument Controls > I/O Configuration >
Output Relay Settings > Select Relay > Instrument State.
CHOOSE SIGNAL TYPE:
>ALARMS
NON-ALARM
RANGE AVG DIAGS ALARM
The Alarms screen allows the user to select an alarm status for the selected
relay output. The currently selected item is shown by “<--” after it. The
I/O board status alarm is only present if the I/O expansion board is
installed. Zero and Span Check Cal are only present if the automated
zero/span check is enabled. See the Alarms Menu section later in this
chapter for more information on alarm items.
● In the Main Menu, choose Instrument Controls > I/O Configuration >
Output Relay Settings > Select Relay > Instrument State > Alarms.
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Operation
Instrument Controls Menu
ALARM STATUS ITEMS:
>NONE
GEN ALARM <--
NO CONC MAX
NO CONC MIN
NO2 CONC MAX
RANGE AVG DIAGS ALARM
NO2 CONC MIN
NOx CONC MAX
NOx CONC MIN
INT TEMP
CHAMB TEMP
COOLER TEMP
NO2 CV TEMP
PRESSURE
FLOW
OZONE FLOW
MB STATUS
MIB STATUS
I/O BD STATUS
CONC ALARM
ZERO CHK/CAL
SPAN CHK/CAL
EXT ALARM 1
EXT ALARM 2
EXT ALARM 3
Non-Alarm
The Non-Alarm screen allows the user to select a non-alarm status for the
selected relay output. The currently selected item is shown by “<--” after it.
The zero, span, and sample modes are only present if the zero/span valve
option is installed.
● In the Main Menu, choose Instrument Controls > I/O Configuration >
Output Relay Settings > select Relay > Instrument State > Non-Alarm.
NON ALARM STATUS ITEMS:
>NONE
AUTORANGE (NOx)
LOCAL/REMOTE
SERVICE
UNITS
RANGE AVG DIAGS ALARM
ZERO MODE
SPAN MODE
NO MODE
NOX MODE
SAMPLE MODE
PURGE MODE
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Operation
Instrument Controls Menu
Digital Input Settings
The Digital Input Settings menu displays a list of the 16 digital inputs
available, and allows the user to select the logic state and instrument
parameter for the relay selected.
Note The digital inputs must be asserted for at least one second for the
action to be activated. ▲
Not all of the I/O available in the instrument is brought out on the
supplied terminal board. If more I/O is desired, an alternative means of
connection is required. (See optional Terminal Block and Cable Kits.) ▲
● In the Main Menu, choose Instrument Controls > I/O Configuration >
Digital Input Settings.
DIGITAL INPUT SETTINGS:
>1 NOP NO MODE
2 NOP NOX MODE
3 NOP SET BACKGROUND
4 NOP CAL TO LO SPAN
5 NOP NONE
RANGE AVG DIAGS ALARM
Logic State
The Logic State menu item is used to change the selected I/O relay to
either normally open or normally closed. The default state is open, which
indicates that a relay connected between the digital input pin and ground is
normally open and closes to trigger the digital input action.
● Press to toggle and set the logic state to normally open or
normally closed.
DIGITAL INPUT SETUP:
>LOGIC STATE OPEN
INSTRUMENT STATE
RANGE AVG DIAGS ALARM
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Operation
Instrument Controls Menu
Instrument Action
The Instrument Action submenu allows the user to choose the instrument
action that is assigned to the selected digital input. The zero and span
modes are only present if the zero/span valve option is installed.
● In the Main Menu, choose Instrument Controls > I/O Configuration >
Digital Input Settings > select Relay > Instrument Action.
CHOOSE ACTION:
>NONE
ZERO MODE
SPAN MODE
NO MODE <- NOX MODE
RANGE AVG DIAGS ALARM
SET BACKGROUND
CAL TO LO SPAN
AOUTS TO ZERO
AOUTS TO FS
CAL TO HI SPAN
EXT ALARM 1
EXT ALARM 2
EXT ALARM 3
Analog Output Configuration
(Select Channel)
Allow Over/Under Range
The Analog Output Configuration menu displays a list of the analog
output channels available for configuration. Channel choices include all
voltage channels, all current channels, individual voltage channels 1–6, and
individual current channels 1–6 (if the I/O expansion board option is
installed).
● In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Output Config.
OUTPUT CHANNELS:
>ALLOW OVER/UNDER RANGE
ALL VOLTAGE CHANNELS
ALL CURRENT CHANNELS
VOLTAGE CHANNEL 1
VOLTAGE CHANNEL 2
RANGE AVG DIAGS ALARM
The Allow Over/Under Range screen is used to select whether or not the
analog outputs are allowed to exceed the maximum selected value of 100
mV, 1 V, 5 V, 10 V, or 20 mA or the minimum selected value of 0 V, 0
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Operation
Instrument Controls Menu
mA, or 4 mA. By default, this parameter is set to on and 5% over and
under range is allowed for all analog output channels.
● In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Output Config > Allow Over/Under Range.
ALLOW OVER/UNDER RANGE:
CURRENTLY: ON
SET TO: OFF ?
TOGGLE VALUE
RANGE AVG DIAGS ALARM
Analog Output Configuration
(Select Action)
The Analog Output Configuration menu displays a list of the analog
output configuration choices, from which the user selects the parameter to
adjust for the selected output channel. Configuration choices include
selecting range, setting minimum/maximum values, and choosing the
signal to output.
Note The settings are different depending on the AUTO/MANUAL
MODE and RANGE MODE settings. Changing either of these settings
will produce a different set of analog output data items. If either of these
modes is going to be changed on a regular basis, then the user must
configure each set of data separately after changing the modes to each
setting. ▲
● In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Output Config > All Voltage Channels, All Current
Channels, Voltage Channel 1–6 or Current Channel 1–6.
ANALOG OUTPUT CONFIG:
>SELECT RANGE
SET MINIMUM VALUE
SET MAXIMUM VALUE
CHOOSE SIGNAL TO OUTPUT
RANGE AVG DIAGS ALARM
Select Range
The Select Range screen is used to select the hardware range for the selected
analog output channel. Possible ranges for the voltage outputs are: 0-100
mV, 0-1, 0-5, and 0-10 V. Possible ranges for the current outputs are: 0-20
mA and 4-20 mA.
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Operation
Instrument Controls Menu
● In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Output Config > select Channel > Select Range.
SELECT OUTPUT RANGE:
SELECTED OUTPUT: V ALL
CURRENTLY: 0-10V
SET TO: 0-100mV ?
CHANGE VALUE SAVE
RANGE AVG DIAGS ALARM
Minimum and Maximum
Value
The Minimum and Maximum Value screens are used to edit the zero (0)
and full-scale (100) values, respectively, in percentages for the selected
analog output channel. See Table 3–7 for a list of choices. The minimum
and maximum output value screens function the same way. The following
example shows the set minimum value screen.
● In the Main Menu, choose Instrument Controls > IO Configuration >
Analog Output Config > select Channel > Set Minimum or Maximum
Value.
MINIMUM OUTPUT PERCENT:
SELECTED OUTPUT: V ALL
CURRENTLY: N/A %
SET TO: 0000.5 % ?
CHANGE VALUE SAVE
RANGE AVG DIAGS ALARM
Table 3–7. Analog Output Zero to Full-Scale Table
Output Zero % Value Full-Scale 100% Value
NO Zero (0) Range Setting
NO
Zero (0) Range Setting
2
NOx Zero (0) Range Setting
LO NO Zero (0) Range Setting
LO NO2 Zero (0) Range Setting
LO NOx Zero (0) Range Setting
HI NO Zero (0) Range Setting
HI NO2 Zero (0) Range Setting
HI NOx Zero (0) Range Setting
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Operation
Instrument Controls Menu
Output Zero % Value Full-Scale 100% Value
Choose Signal to Output
Range (NO
Internal Temp User-set alarm min value User-set alarm max value
Chamber Temp User-set alarm min value User-set alarm max value
Cooler Temp User-set alarm min value User-set alarm max value
NO2 Converter Temp User-set alarm min value User-set alarm max value
Perm Oven Gas Temp Perm Oven Gas alarm min value Perm Oven Gas alarm max value
Perm Oven Heater Temp Perm Oven Heater alarm min
Chamber Pressure User-set alarm min value User-set alarm max value
Flow User-set alarm min value User-set alarm max value
PMT Volts 700 volts 1100 volts
Ozonator Flow User-set alarm min value User-set alarm max value
Everything Else 0 Units 10 Units
) Recommend not to change the setting for this output
x
Perm Oven Heater alarm max
value
value
The Choose Signal to Output screen displays a list of the analog output
signal choices. Choices are grouped into three categories: Concentrations,
Other Measurements, and Analog Inputs (if the I/O expansion board
option is installed). This allows the user to select the output signal that will
be assigned to each analog channel. The Concentrations screen is shown
below. See Table 3–8 for a list of items for each signal group choice. The
analog inputs 1–8 will not show if the Ouput Conc Cal option is set to
YES in the Instrument Configuration screen.
Note The settings are different depending on the AUTO/MANUAL
MODE and RANGE MODE settings. Changing either of these settings
will produce a different set of analog output data items. If either of these
modes is going to be changed on a regular basis, then the user must
configure each set of data separately after changing the modes to each
setting.
● In the Main Menu, choose Instrument Controls > I/O Configuration >
▲
Analog Output Config > select Channel > Choose Signal to Output.
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Operation
Instrument Controls Menu
CHOOSE SIGNAL TYPE:
>CONCENTRATIONS
OTHER MEASUREMENTS
ANALOG INPUTS
RANGE AVG DIAGS ALARM
CHOOSE SIGNAL - CONC
SELECTED OUTPUT: V1
CURRENTLY: NO
SET TO: NONE ?
CHANGE VALUE SAVE
RANGE AVG DIAGS ALARM
Table 3–8. Signal Type Group Choices
Concentrations Other Measurements Analog Inputs
None None None
NO (single/auto range mode) Internal Temp Analog Input 1
NO2 (single/auto range mode) Chamber Temp Analog Input 2
NOx (single/auto range mode) Cooler Temp Analog Input 3
LO NO (dual mode) NO2 Converter Temp Analog Input 4
LO NO2 dual mode) Perm Oven Gas Analog Input 5
LO NOx (dual mode) Perm Oven Heater Analog Input 6
HI NO (dual mode) Chamber Pressure Analog Input 7
HI NO2 (dual mode) Flow Analog Input 8
HI NOx dual mode) PMT Volts
Range (NOx) (auto range mode) NO BKG
NOx BKG
LO NO COEF
LO NO2 COEF
LO NOx COEF
HI NO COEF
HI NO2 COEF
HI NOx COEF
Ozonator Flow
Ext Alarms
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Operation
Instrument Controls Menu
Analog Input
Configuration
The Analog Input Configuration menu displays a list of the 8 analog input
channels available for configuration. This screen is only displayed if the I/O
expansion board option is installed. Configuration includes entering the
Descriptor, Units, Decimal Places, choice of 1–10 points in the table, and
corresponding number of points selected. This menu is not displayed if the
Output Conc Cal option is selected.
● In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Input Config.
ANALOG INPUT CONFIG:
>CHANNEL 1 IN1
CHANNEL 2 IN2
CHANNEL 3 IN3
CHANNEL 4 IN4
CHANNEL 5 IN5
RANGE AVG DIAGS ALARM
ANALOG INPUT 01 CONFIG:
>DESCRIPTOR IN1
UNITS V
DECIMAL PLACES 2
TABLE POINTS 2
POINT 1
RANGE AVG DIAGS ALARM
POINT 2
Descriptor
The Descriptor screen allows the user to enter the descriptor, or name, for
the selected analog input channel. The descriptor is used in datalogging
and streaming data to report what data is being sent out. The descriptor
may be from 1 to 3 characters in length, and defaults to IN1 to IN8 (user
input channel number).
● In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Input Config > select Channel > Descriptor.
ANALOG INPUT DESCRIPTOR:
CURRENTLY: IN1
IN1
ABCDEFGHIJKLMN BKSP
OPQRSTUVWXYZ PAGE
0123456789 ./- SAVE
RANGE AVG DIAGS ALARM
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Operation
Instrument Controls Menu
Units
Decimal Places
The Units screen allows the user to enter the units for the selected analog
input channel. The units are displayed on the diagnostic screen and in
datalogging and streaming data. The units may be from 1 to 3 characters in
length, and defaults to V (volts).
● In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Input Config > select Channel > Units.
ANALOG INPUT UNITS:
CURRENTLY: V
VN1
ABCDEFGHIJKLMN BKSP
OPQRSTUVWXYZ PAGE
0123456789 ./- SAVE
RANGE AVG DIAGS ALARM
The Decimal Places screen allows the user to select how many digits are
displayed to the right of the decimal, from 0 to 6, with a default of 2.
● In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Input Config > Select Channel > Decimal Places.
Number of Table Points
DECIMAL PLACES:
CURRENTLY: 2
SET TO: 3 ?
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
The Number of Table Points screen allows the user to select how many
points are used in the analog input conversion table for the selected
channel. The instrument uses linear interpolation between the points in
this table to determine what the reading value is based on the analog input
voltage. Each point in the table consists of an analog input voltage value
(0–10.5 V) and a corresponding reading value. Only two points are
necessary for linear inputs, however a larger number of points may be used
to approximate non-linear inputs. The points range from 2 to 10, with a
default of 2.
● In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Input Config > select Channel > Table Points.
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Operation
Instrument Controls Menu
NUMBER OF TABLE POINTS:
CURRENTLY: 2
SET TO: 10 ?
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
Table Point
Volts
The Table Point submenu allows the user to set up an individual table
point.
● In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Input Config > Select Channel > Point 1-10.
TABLE POINT 01 CONFIG:
>VOLTS 0.00
USER VALUE 0.00
RANGE AVG DIAGS ALARM
The Volts screen allows the user to set the input voltage for the selected
table point in the conversion table, from 0.00 to 10.50. The default table is
a two-point table with point 1: 0.00 V = 000.0 U and point 2: 10.00 V =
10.0 U, where U is the previously entered unit of measure.
● In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Input Config > select Channel > select Point > Volts.
TABLE POINT 01 VOLTS:
CURRENTLY: 0.00
SET TO: 00.00
MOVE CURSOR
CHANGE VALUE SAVE
RANGE AVG DIAGS ALARM
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Operation
Instrument Controls Menu
User Value
Temperature
Compensation
The User Value screen allows the user to set the output value for the
corresponding input voltage for the selected table point in the conversion
table, from -9999999 to 99999999. The default table is a two-point table
with point 1: 0.00 V = 000.0 U and point 2: 10.00 V = 10.0 U, where U is
the previously entered unit of measure.
● In the Main Menu, choose Instrument Controls > I/O Configuration >
Analog Input Config > select Channel > select Point > User Value.
TABLE POINT 01 USER VAL:
CURRENTLY: 0.00
SET TO: 00000.00
MOVE CURSOR
CHANGE VALUE SAVE
RANGE AVG DIAGS ALARM
The Temperature Compensation screen allows the user to turn temperature
compensation on or off. Temperature compensation changes to the
instrument's output signal that occur due to internal instrument
temperature variations. The effects of 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. This
compensation can be used for special applications, or when operating the
instrument outside the recommended temperature range, even though the
Model 42i does not require temperature compensation for EPA
equivalency.
When temperature compensation is on, the display shows the current
internal instrument temperature (measured by a thermistor on the Interface
board). When temperature compensation is off, the display shows the
factory standard temperature of 30 °C.
● In the Main Menu, choose Instrument Controls > Temperature
Compensation.
TEMPERATURE COMPENSATION:
COMP TEMP: 30.0 oC
CURRENTLY: OFF
SET TO: ON ?
TOGGLE VALUE
RANGE AVG DIAGS ALARM
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Operation
Instrument Controls Menu
Pressure
Compensation
Pressure compensation provides compensation for any changes to the
instrument's output signal due to reaction chamber pressure variations. The
effects of reaction chamber pressure changes on the analyzer's subsystems
and output have been empirically determined. This empirical data is used
to compensate for any change in reaction chamber pressure. This
compensation can be used even though the Model 42i does not require
pressure compensation for EPA equivalency.
When pressure compensation is on, the first line of the display represents
the current pressure in the reaction chamber. When pressure compensation
is off, the first line of the display shows the factory standard pressure of 200
mmHg.
● In the Main Menu, choose Instrument Controls > Pressure
Compensation.
PRESSURE COMPENSATION:
COMP PRES: 200.0 mmHg
CURRENTLY: OFF
SET TO: ON ?
TOGGLE VALUE
RANGE AVG DIAGS ALARM
Screen Contrast
The Screen Contrast screen is used to change the contrast of the display.
Intensities between 0 and 100% in increments of 5 are available. Changing
the screen contrast may be necessary if the instrument is operated at
extreme temperatures.
Note The optimal contrast will change with changes in temperature. ▲
Note The optimal contrast will change from one LCD to another. If the
LCD is replaced, the contrast may need to be reset. ▲
Note If the display contrast is not optimal, but the content on the screen is
visible, select Instrument Controls > Screen Contrast and adjust the screen
contrast. If the content on the screen is not visible, use the “set contrast 10”
C-Link command to set the screen contrast to mid-range, then optimize
the contrast. See “contrast levels” in Appendix B, “C-Link Protocol
Commands” for more information on this command.
● In the Main Menu, choose Instrument Controls > Screen Contrast.
▲
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Operation
Instrument Controls Menu
SCREEN CONTRAST:
CURRENTLY: 50 %
SET TO: 60 % ?
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
Service Mode
The Service Mode screen is used to turn the service mode on or off.
Turning service mode “ON” locks out any remote actions and allows access
to parameters and functions that are useful when making adjustments or
diagnosing the Model 15i. The service (wrench) icon on the status bar is
shown when service mode is on. For more information about the service
mode, see “Service Menu” later in this chapter.
Note The service mode should be turned off when finished, as it prevents
remote operation. ▲
● In the Main Menu, choose Instrument Controls > Service Mode.
SERVICE MODE:
CURRENTLY: OFF
SET TO: ON ?
TOGGLE VALUE
RANGE AVG DIAGS ALARM
Date/Time
The Date/Time screen allows the user to view and change the system date
and time (24-hour format). The internal clock is powered by its own
battery when instrument power is off.
● In the Main Menu, choose Instrument Controls > Date/Time.
DATE AND TIME:
19 MAR 2005 12:34:56
PRESS TO EDIT
RANGE AVG DIAGS ALARM
3-58 Model 42i Instruction Manual Thermo Fisher Scientific
DATE AND TIME:
19 MAR 2005 12:34:56 ?
SETTING: DAYS
SET MONTHS
CHANGE VALUE
SAVE VALUE
RANGE AVG DIAGS ALARM
Page 97
Operation
Diagnostics Menu
Timezone
The Timezone screen is used to set the timezone for the Network Time
Protocol (NTP) server. This should be set to the timezone that the
instrument is located in. If the exact timezone is not shown in the list, it
may be entered via the C-LINK “tz” command (see Appendix B). The
selections are: UTC (GMT), EST (GMT+5), CST (GMT+6), MST
(GMT+7), PST (GMT+8), YST (GMT+9), HST (GMT+10), NST
(GMT+11), DLW (GMT+12), CET (GMT-1), EET (GMT-2), BST
(GMT-3), DLT (GMT-4), ECH (GMT-5), FOX (GMT-6), GLF (GMT-
7), CCT (GMT-8), JST (GMT-9), GST (GMT-10), LMA (GMT-11),
DLE (GMT-12), EDT (GMT+5/4), CDT (GMT+6/5), MDT
(GMT+7/6), and PDT (GMT+8/7).
Note The current timezone may say NULL before the timezone is set for
the first time, or if the timezone was cleared with a C-Link command. ▲
● In the Main Menu, choose Instrument Controls > Timezone.
TIMEZONE FOR TIMESERVER:
CURRENTLY: UTC (GMT)
SET TO: EST (GMT+5) ?
CHANGE VALUE
SAVE VALUE
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Diagnostics Menu
The Diagnostics menu provides access to diagnostic information and
functions. This menu is useful when troubleshooting the instrument. The
analog input readings and analog input voltages are only displayed if the
I/O expansion board option is installed.
● In the Main Menu, choose Diagnostics.
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Operation
Diagnostics Menu
DIAGNOSTICS:
>PROGRAM VERSION
VOLTAGES
TEMPERATURES
PRESSURE
FLOW
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ANALOG INPUT READINGS
ANALOG INPUT VOLTAGES
DIGITAL INPUTS
RELAY STATES
TEST ANALOG OUTPUTS
INSTRUMENT CONFIGURATION
CONTACT INFORMATION
Program Version
Voltages
The Program Version screen (read only) shows the version number of the
program installed. Prior to contacting the factory with any questions
regarding the instrument, please note the product model name and
program version number.
● In the Main Menu, choose Diagnostics > Program Version.
PROGRAM VERSIONS:
PRODUCT: MODEL 42i
VERSION: 01.00.01.074
FIRMWARE: 09.06.19
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The Voltages menu displays the current diagnostic voltage readings. This
screen enables the power supply to be quickly read for low or fluctuating
voltages without having to use a voltage meter. The I/O board item is only
displayed if the I/O expansion board option is installed.
● In the Main Menu, choose Diagnostics > Voltages.
VOLTAGES:
>MOTHERBOARD
INTERFACE BOARD
I/O BOARD
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Operation
Diagnostics Menu
Motherboard Voltages
Interface Board Voltages
The Motherboard screen (read only) is used to display the current voltage
readings on the motherboard.
● In the Main Menu, choose Diagnostics > Voltages > Motherboard
Voltages.
MOTHERBOARD VOLTAGES:
3.3 SUPPLY 3.3 V
5.0 SUPPLY 5.0 V
24.0 SUPPLY 24.1 V
-3.3 SUPPLY -3.3 V
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The Interface Board screen (read only) is used to display the current voltage
readings on the interface board.
● In the Main Menu, choose Diagnostics > Voltages > Interface Board
Voltages.
I/O Board Voltages
INTERFACE BOARD VOLTAGES:
PMT SUPPLY 785.5 V
3.3 SUPPLY 3.3 V
5.0 SUPPLY 5.0 V
15.0 SUPPLY 15.0 V
P15.0 SUPPLY 15.0 V
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24.0 SUPPLY 24.0 V
-15.0 SUPPLY -15.0 V
The I/O Board screen (read only) is used to display the current voltage
readings on the I/O expansion board. This menu is only displayed if the
I/O expansion board option is installed.
● In the Main Menu, choose Diagnostics > Voltages > I/O Board
Voltages.
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Operation
Diagnostics Menu
I/O BOARD VOLTAGES:
3.3 SUPPLY 3.3 V
5.0 SUPPLY 5.0 V
15.0 SUPPLY 5.0 V
24.0 SUPPLY 24.0 V
-3.3 SUPPLY -3.3 V
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Temperatures
Pressure
The Temperatures screen (read only) displays the internal temperature,
reaction chamber temperature, cooler temperature, converter temperatures,
and perm oven temperatures (if the permeation oven option is installed).
The internal temperature is the air temperature measured by a sensor
located on the interface board.
● In the Main Menu, choose Diagnostics > Temperatures.
TEMPERATURES:
INTERNAL 28.6 oC
CHAMBER 49.0 oC
COOLER -10.0 oC
NO2 CONVERTER 320.7 oC
NO2 CONV SET 325.0 oC
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PERM OVEN GAS 45.0 oC
PERM OVEN HEATER 45.0
o
C
The Pressure screen (read only) displays the reaction chamber pressure. The
pressure is measured by a pressure transducer at the reaction chamber.
● In the Main Menu, choose Diagnostics > Pressure.
PRESSURE: 232.5 mmHg
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Flow
The Flow screen (read only) displays the sample and ozonator flow rate.
The flows are measured by internal flow sensors. For more information, see
Figure 1–1.
● In the Main Menu, choose Diagnostics > Flow.
3-62 Model 42i Instruction Manual Thermo Fisher Scientific
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