Model 42i
Trace Level
Instruction Manual
Chemiluminescence NO-NO2-NOx Analyzer
Part Number 102855-00
20Dec2007
© 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
Thermo Fisher Scientific WEEE Compliance
WEEE Compliance
This product is required to comply with the European Union’s Waste
Electrical & Electronic Equipment (WEEE) Directive 2002/96/EC. It is
marked with the following symbol:
Thermo Fisher Scientific has contracted with one or more
recycling/disposal companies in each EU Member State, and this product
should be disposed of or recycled through them. Further information on
Thermo Fisher Scientific’s compliance with these Directives, the recyclers
in your country, and information on Thermo Fisher Scientific products
which may assist the detection of substances subject to the RoHS Directive
are available at: www.thermo.com/WEEERoHS.
Thermo Fisher Scientific Model 42i Trace Level Instruction Manual i
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 “Preventative 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.
About This Manual
Safety
ii Model 42i Trace Level Instruction Manual Thermo Fisher Scientific
● 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
● Appendix E “Standards for Trace Level Analyzers” provides
information about generating zero air.
Review the following safety information carefully before using the analyzer.
This manual provides specific information on how to operate the analyzer,
however, if the calibrator 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 will result in death or serious
personal injury if the warning is ignored. ▲
WARNING A hazard is present or an unsafe practice can result in
serious personal injury if the warning is ignored. ▲
CAUTION The hazard or unsafe practice could result in minor to
moderate personal injury if the warning is ignored. ▲
Equipment Damage The hazard or unsafe practice could result in property
damage if the warning is ignored. ▲
Safety
Safety and Equipment
Damage Alerts
About This Manual
Safety and Equipment Damage Alerts
Thermo Fisher Scientific Model 42i Trace Level Instruction Manual iii
Safety and Equipment damage Alerts in this Manual
Alert Description
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 Trace Level 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 grounded
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. ▲
About This Manual
FCC Compliance
iv Model 42i Trace Level Instruction Manual Thermo Fisher Scientific
WARNING 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
Marking of electrical and electronic equipment which applies to electrical and
electronic equipment falling under the Directive 2002/96/EC (WEEE) and the
equipment that has been put on the market after 13 August 2005. ▲
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
FCC Compliance
WEEE Symbol
Where to Get Help
Thermo Fisher Scientific Model 42i Trace Level Instruction Manual v
Contents
Introduction........................................................................................................ 1-1
Principle of Operation ........................................................................ 1-2
Specifications ...................................................................................... 1-3
Installation ......................................................................................................... 2-1
Lifting ................................................................................................. 2-1
Unpacking and Inspection .................................................................. 2-1
Setup Procedure .................................................................................. 2-2
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....................
Model 42i
Trace Level
Instruction Manual
Chemiluminescence NO-NO2-NOx Analyzer
Part Number 102855-00
20Dec2007
© 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
Thermo Fisher Scientific WEEE Compliance
WEEE Compliance
This product is required to comply with the European Union’s Waste
Electrical & Electronic Equipment (WEEE) Directive 2002/96/EC. It is
marked with the following symbol:
Thermo Fisher Scientific has contracted with one or more
recycling/disposal companies in each EU Member State, and this product
should be disposed of or recycled through them. Further information on
Thermo Fisher Scientific’s compliance with these Directives, the recyclers
in your country, and information on Thermo Fisher Scientific products
which may assist the detection of substances subject to the RoHS Directive
are available at: www.thermo.com/WEEERoHS.
Thermo Fisher Scientific Model 42i Trace Level Instruction Manual i
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 “Preventative 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.
About This Manual
Safety
ii Model 42i Trace Level Instruction Manual Thermo Fisher Scientific
● 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
● Appendix E “Standards for Trace Level Analyzers” provides
information about generating zero air.
Review the following safety information carefully before using the analyzer.
This manual provides specific information on how to operate the analyzer,
however, if the calibrator 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 will result in death or serious
personal injury if the warning is ignored. ▲
WARNING A hazard is present or an unsafe practice can result in
serious personal injury if the warning is ignored. ▲
CAUTION The hazard or unsafe practice could result in minor to
moderate personal injury if the warning is ignored. ▲
Equipment Damage The hazard or unsafe practice could result in property
damage if the warning is ignored. ▲
Safety
Safety and Equipment
Damage Alerts
About This Manual
Safety and Equipment Damage Alerts
Thermo Fisher Scientific Model 42i Trace Level Instruction Manual iii
Safety and Equipment damage Alerts in this Manual
Alert Description
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 Trace Level 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 grounded
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. ▲
About This Manual
FCC Compliance
iv Model 42i Trace Level Instruction Manual Thermo Fisher Scientific
WARNING 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
Marking of electrical and electronic equipment which applies to electrical and
electronic equipment falling under the Directive 2002/96/EC (WEEE) and the
equipment that has been put on the market after 13 August 2005. ▲
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
FCC Compliance
WEEE Symbol
Where to Get Help
Thermo Fisher Scientific Model 42i Trace Level Instruction Manual v
Contents
Introduction........................................................................................................ 1-1
Principle of Operation ........................................................................ 1-2
Specifications ...................................................................................... 1-3
Installation ......................................................................................................... 2-1
Lifting ................................................................................................. 2-1
Unpacking and Inspection .................................................................. 2-1
Setup Procedure .................................................................................. 2-2
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....................
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