SICK GM700 User manual

OPERATING INSTRUCTIONS
GM700
TDLS Analyzer for NH3, HF, HCl or O2
Cross-Duct Version
Installation
Operation
Maintenance

2 GM700 · Operating Instructions · 8011543 V3.1 · © SICK AG
Document Information
Document ID
Title: Operating Instructions GM700
Part No.: 8011543
Version: 3.1
Release: 2014-03
Described Product
Product name: GM700
Variants: Cross-Duct
Manufacturer
SICK AG
Erwin-Sick-Str. 1 · 79183 Waldkirch · Germany
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]
Place of Manufacture
SICK AG
Nimburger Str. 11 · 79276 Reute · Germany
Original Documents
The English edition 8011543 of this document is an original
document from SICK AG.
SICK AG assumes no liability for the correctness of an
unauthorized translation.
Please contact SICK AG or your local representative in case of
doubt.
Legal information
Subject to change without notice.
© SICK AG. All rights reserved.
Warning Symbols
Warning Levels / Signal Words
DANGER
Risk or hazardous situation which will result in severe personal
injury or death.
WARNING
Risk or hazardous situation which could result in severe personal
injury or death.
CAUTION
Hazard or unsafe practice which could result in personal injury or
property damage.
NOTICE
Hazard which could result in property damage.
Information Symbols
IMMEDIATE HAZARD
of severe injuries or death
Hazard (general)
Please consult the documentation
Hazard by corrosive substances
Hazard by voltage
Hazard by unhealthy substances
Hazard by toxic substances
Hazard by laser radiation
Hazard by high temperature or hot surface
Information about the use in potentially explosive
atmospheres
Important technical information for this product
Important information on electric or electronic
functions
Nice to know
Supplementary information
Link to information at another place

GM700 · Operating Instructions · 8011543 V3.1 ·©SICKAG 3
Contents
1SafetyInformation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.1 Main hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.2 Main operating information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.2.1 Protection against hazards through gases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.2.2 Protection against laser radiation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.2.3 Behavior during purge air failure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.3 Intended use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
1.3.1 Purpose of the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.4 Responsibility of user . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.4.1 Disposing of device parts harmful to the environment . . . . . . . . . . . . . . . . . . . . . . . . 12
2 Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.1 Product identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.2 GM700 system, Cross-Duct version, layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
2.3 GM700 options and accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
2.4 Measuring principle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.4.1 Reference cuvettes for wavelength stabilization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2.4.2 Signal evaluation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3 Project Planning Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.1 Work steps from system selection to start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.2 Project Planning Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.3 Initial onsite installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.3.1 Assembly preparation at the sampling point . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.3.2 Uncovering the duct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.3.3 Mounting the flanges with tube. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.3.4 Assembly preparation for the purge air unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.3.5 Duct insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.3.6 Assembly preparation for the evaluation unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.4 Preparations for electrical installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.4.1 Signal and power supply cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.4.2 CAN bus wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
4.1 Preparations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
4.1.1 Checking the scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.1.2 Installation prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
4.2 Fitting system components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.2.1 Information on fitting the sender/receiver unit or reflector . . . . . . . . . . . . . . . . . . . . 33
4.3 Installing the purge air unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.3.1 Terminal box with 24 V power supply unit (option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.4 Installing the evaluation unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.4.1 Installing the evaluation unit – sheet metal enclosure version . . . . . . . . . . . . . . . . . 34
4.4.2 Installing the evaluation unit – cast-metal enclosure version . . . . . . . . . . . . . . . . . . 35
4.5 Electrical connection of system components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.5.1 CAN bus wiring options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
4.5.2 Electrical connection in the evaluation unit EvU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

4GM700 · Operating Instructions · 8011543 V3.1 ·©SICKAG
Contents
5 Handling the Evaluation Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
5.1 User qualifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.2 Operating elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
5.2.1 Menu overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6 Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
6.1 Preparations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6.1.1 Required qualifications and further prerequisites . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6.2 Start-up steps overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
6.3 Mechanical preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.3.1 Checking the scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.3.2 Cleaning optical interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.4 Measuring path free from sample gas - zero path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.4.1 Preparing a zero path . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
6.4.2 Fitting the GM700 system components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
6.4.3 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
6.4.4 Optical alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
6.4.5 Zero adjust. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
6.4.6 Preparing the system for zero adjust. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
6.4.7 Performing zero adjust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
6.4.8 Installing the purge air fixtures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
6.4.9 Purge air units start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
6.4.10 Sender/receiver unit and reflector start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
6.5 Installing weatherproof covers (option) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
6.5.1 Evaluation unit start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
6.5.2 Operating states . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
6.5.3 Gas connections for oxygen measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
6.5.4 Starting operating mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
6.5.5 Starting the increased nitrogen purging for oxygen measurement . . . . . . . . . . . . . 68
7 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
7.1 Maintenance intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7.1.1 Maintenance protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7.2 Preparation and general preparatory work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7.3 Maintenance work on SR-unit and reflector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
7.3.1 Visual inspection and enclosure cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
7.3.2 Cleaning the front window on the SR-unit and on the reflector . . . . . . . . . . . . . . . . 71
7.4 Evaluation unit (EvU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
7.5 Controlling and tracking the laser working point during measurement . . . . . . . . . . . . 73
7.5.1 Connecting the test gas . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
7.5.2 Starting the tracking procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
7.5.3 Filter box measurement to check the measuring channels for NH3, HF or HCl. . . 75
7.5.4 Determining the necessary test gas concentration . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
7.5.5 Installing the filter box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
7.5.6 Carry out filter box measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
7.6 Checking the gas analyzer with test cell GMK10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
7.6.1 Assembly of the GM700 components with the test cell GMK10 . . . . . . . . . . . . . . . 81
7.6.2 Carrying out measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

GM700 · Operating Instructions · 8011543 V3.1 ·©SICKAG 5
Contents
8 Troubleshooting and Clearing Malfunctions. . . . . . . . . . . . . . . . . . . . 85
8.1 Malfunction categories/possible effects . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
8.2 Purge air failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
8.3 Integrated monitoring and diagnosis system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
8.3.1 Display and retrieval of messages on the evaluation unit . . . . . . . . . . . . . . . . . . . . . 87
8.3.2 Troubleshooting and clearing malfunctions, evaluation unit . . . . . . . . . . . . . . . . . . . 88
8.3.3 Error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
8.3.4 Warning messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
8.3.5 Further tips on troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
9 Technical Data, Expendable and Spare Parts. . . . . . . . . . . . . . . . . . 95
9.1 Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
9.1.1 Compliances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
9.1.2 Electrical protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
9.2 Measuring components and accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
9.2.1 Technical data, GM700 system components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
9.3 GM700 sender/receiver unit dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
9.4 Purge air fixtures for SR-unit and reflector dimensions . . . . . . . . . . . . . . . . . . . . . . . . .100
9.5 Reflector dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100
9.6 Flanges with tube dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .101
9.7 GM700 evaluation unit, sheet metal enclosure version, dimensions . . . . . . . . . . . . .101
9.8 GM700 evaluation unit, sheet metal version, dimensions . . . . . . . . . . . . . . . . . . . . . .102
9.9 Weatherproof cover for GM700 SR-unit, dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . .103
9.10 Weatherproof cover for GM700 reflector unit, dimensions . . . . . . . . . . . . . . . . . . . . . .103
9.11 Terminal box dimensions for CAN bus (option); Part No. 2020440 . . . . . . . . . . . . . .104
9.12 Accessories, expendable and spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
9.12.1 Consumable parts for 2-years operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
9.12.2 Spare parts for the sender/receiver unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .105
9.12.3 Spare parts for the reflector unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
9.12.4 Spare parts for the purge air fixture (sender/receiver unit) . . . . . . . . . . . . . . . . . . .106
9.12.5 Spare parts for the purge air fixture (reflector side) . . . . . . . . . . . . . . . . . . . . . . . . . .106
9.12.6 Spare parts for the evaluation unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107
9.12.7 Fixing accessories. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .107
9.12.8 Spare parts assignment for sender/receiver unit . . . . . . . . . . . . . . . . . . . . . . . . . . . .108

6GM700 · Operating Instructions · 8011543 V3.1 ·©SICKAG
Contents

Safety Information
GM700 · Operating Instructions · 8011543 V3.1 · © SICK AG 7
GM700
1Safety Information
Main hazards
Main operating information
Intended use
Responsibility of user

8 GM700 · Operating Instructions · 8011543 V3.1 · © SICK AG
Safety Information
1.1 Main hazards
Important safety information in short form.
Operational safety
1.2 Main operating information
1.2.1 Protection against hazards through gases
DANGER: Hazards through defective device
The GM700 is likely to be unsafe when it:
●Has been penetrated by moisture.
●Has been stored or operated under irregular conditions.
When safe operation is no longer possible:
▸ Put the GM700 out of operation, separate all connectors from the power
supply and secure against unauthorized start-up.
WARNING: Hazard by voltage
▸ Pay careful attention to power supply connections.
▸ Do not interrupt protective conductor connections.
WARNING: Hot surfaces when enclosure open
Pay attention to hot surfaces on the measuring cell when opening the GM700
enclosure.
WARNING: Eye injuries possible due to laser radiation
 Observe all relevant information in these Operating Instructions
WARNING: Hot and/or aggressive sample gases
▸ Wear suitable protective clothing and mask when using hot and/or aggres-
sive sample gases resp. with high dust loads.
▸ Never open the enclosure or switch off the purge air feed without taking
appropriate protective measures when the duct is pressurized.

Safety Information
GM700 · Operating Instructions · 8011543 V3.1 · © SICK AG 9
WARNING: Toxic and caustic substances in parts in contact with sample gas
●GM700 parts in contact with sample gas can contain toxic and caustic sub-
stances depending on the sample gas composition.
●When fitted in the measuring device, the reference cuvette contains the
respective gases to be measured. These gases must not escape.
Special care must be taken with the GME700-2 (HF) because it not only
contains gaseous HF but also a certain amount of liquid (max. 0.1 g HF for
8 cm cells, max. 0.02 g for 1 cm cells). HF/hydrofluoric acid is extremely
toxic and caustic. It is imperative to avoid inhaling or skin contact at all
times. Particularly when there are indications of leaks or defects, wear pro-
tective clothing (protective goggles, latex gloves) and carry out work in a
well ventilated room/area. Never open the cuvette under any circum-
stances. Check replacement cuvettes for any possible transport damage.
●Handle with care when test gases are used:
▸ When handling HF, keep an HF emergency set (including calcium gluco-
nate gel) available.
▸ Before working on the gas path, ask the operator which gases have been
applied to the GM700.
▸ Ask the operator whether, and how, the GM700 gas path has been cleaned.
▸ If necessary, clean the gas path with a suitable method.
▸ In case of doubt, take appropriate protective measures before working on
the gas path: Ensure adequate ventilation at the workplace or work under a
vent. Wear protective goggles or a safety mask, protective gloves and acid-
proof protective clothes.

10 GM700 · Operating Instructions · 8011543 V3.1 · © SICK AG
Safety Information
1.2.2 Protection against laser radiation
The GM700 laser warning sign is located on the sender/receiver unit.
Figure 1 Laser warning sign on the GM700 sender/receiver unit (example O2measurement)
The invisible laser beam within the SR-unit is not accessible when fitted. There is no risk for
the human eye when looking into the optic visor on the right side of the SR-unit. The CAN
connection cable to the evaluation unit must be disconnected during disassembly or main-
tenance work (e.g. cleaning the front window) otherwise the laser beam could be touched
or accessed.
Laser outlet
Laser warning sign
NOTICE: Laser classes of the GM700 sender/receiver unit:
▸ Laser class 1 in normal measuring operation – the sender/receiver unit
(SR-unit incl. purge air fixture) is fitted securely on the flange with tube
and locked or
▸ Laser class 3R when the SR-unit is unlocked and swiveled in position
and the power supply is switched on via CAN Bus cable from the evalua-
tion unit!
WARNING: Never open the reflector during operation:
This could result in dangerous exposure to radiation.

Safety Information
GM700 · Operating Instructions · 8011543 V3.1 · © SICK AG 11
Laser capacity
The laser wavelength varies for the respective measuring components. The laser output
capacity is <10 mW on the optical interface (front window) of the GM700 SR-unit. The
emitted radiation is harmless to human skin.
1.2.3 Behavior during purge air failure
GM700 measuring system configurations must include immediate resp. quick measures to
protect the measuring system should the purge air feed fail.
1.3 Intended use
1.3.1 Purpose of the device
The GM700 gas analyzer measures the sample gas component concentration, e.g. HF,
NH3, HCl or O2in a gas mixture (sample gas). For this purpose, the GM700 analyzer is
assembled at the measuring location and measures directly onsite (in-situ measurement).
1.4 Responsibility of user
Intended users
The GM700 may be operated by competent persons only who, based on their device-spe-
cific training and knowledge of the device as well as knowledge of the relevant regulations,
can assess the tasks given and recognize the dangers involved.
Correct use
▸ Only use the device as described in these Operating Instructions (  p. 13, §2). The man-
ufacturer bears no responsibility for any other use.
▸ Carry out the specified maintenance work.
▸ Do not remove, add or change any components in or on the device unless such changes
are officially allowed and specified by the manufacturer. Otherwise
– the device may become dangerous
– the manufacturer’s warranty becomes void
– the approval for usage in potentially explosive atmospheres becomes void.
WARNING: Eye injuries possible due to laser radiation when the SR-unit
or the reflector is swiveled open!
The retina of a human eye can be damaged when a person looks directly
into the laser beam for a longer time.
▸ Always switch the GM700 SR-unit off or disconnect the SR-unit CAN
cable to the evaluation unit during installation work on the SR-unit
(when connected)!
Otherwise, this could result in dangerous exposure to radiation
▸ Never look directly into the laser beam! Even with optical instruments!
▸ Never direct the laser beam at other persons!
▸ Make sure the laser beam is not aimed at reflecting surfaces.
▸ Never open the reflector during operation. This could result in danger-
ous exposure to radiation.
▸ See Laser Protection Ordinance according to IEC 60825-1!
Measures for purge air feed failure
▸ Refer to Purge Air Unit Operating Instructions.

12 GM700 · Operating Instructions · 8011543 V3.1 · © SICK AG
Safety Information
Special local requirements
Follow local laws, regulations and company-internal operating directives applicable at the
installation location.
Responsibility for dangerous substances
Safety precautions examples:
●Marking the device with warning signs
●Marking the operating area with warning signs
●Safety-related instruction of personnel who could be in the vicinity of the installation
site.
Keeping documents
▸ Keep these Operating Instructions available for reference.
▸ Pass on to a new owner/operator.
1.4.1 Disposing of device parts harmful to the environment
WARNING: Mortal/health danger as a result of a gas path leakage
When the device is used to measure toxic gases: A leak, for example in the
purge air supply, can be an acute hazard for persons.
▸ Take suitable safety measures.
▸ Make sure these safety precautions are followed.
DANGER: Possible materials harmful to the environment and health
GM700 components can have small shares of pollutants or hazardous sub-
stances such as low lead content in printed circuit boards. The optional perma-
nent cuvette contains low concentrations of HF or HCl (according to device con-
figuration, see scope of delivery).
▸ Dispose of all GM700 components according to local laws, regulations and
company-internal operating directives applicable at the installation location
such as:
▸ Printed circuit boards and similar electronic components
▸ Dispose of the permanent cuvette, when fitted, safely because it con-
tains low concentrations of HCl or HF. Therefore, do not simply destroy
the cuvette.

Product Overview
GM700 · Operating Instructions · 8011543 V3.1 · © SICK AG 13
GM700
2Product Overview
Product identification
GM700 system, Cross-Duct version, layout
Measuring principle

14 GM700 · Operating Instructions · 8011543 V3.1 · © SICK AG
Product Overview
2.1 Product identification
2.2 GM700 system, Cross-Duct version, layout
Figure 2 Standard layout for GM700 measuring systems (Cross-Duct version)
Product name: GM700
Device versions
GM700 Cross-Duct version
Device type GM700-2, HF version, was performance-tested for
measuring ranges 5 and 25 mg/m3in accordance with
EN15267-3
(TÜV Rheinland 936/21210058/A of September 30, 2010)
Manufacturer: SICK AG
Erwin-Sick-Str. 1 · 79183 Waldkirch · Deutschland
Type plates: ●SR-unit: On the right side
●On the purge air fixture
maintcalpardiag
GM
EvaluationUnit
CO
CO
2
H
2
O
mg/
m
3
236
Ref.conditions
Hum:wet
Measuring Operation
Service
Warnin
Malfunction
Sender/receiver unit
(SR-unit) Reflector
Purge air unit SLV 4
(2nd purge air unit depending
on application)
Evaluation unit
EvU
Inputs/outputs,
analog, binary
Flanges with tube
Purge air fixtures
CAN bus

Product Overview
GM700 · Operating Instructions · 8011543 V3.1 · © SICK AG 15
Figure 3 GM700 measuring system (Cross-Duct version) for O2measurement
Sender/receiver unit (SR-unit)
The sender/receiver unit contains the optic and electronic subassemblies of the measur-
ing system. The gas concentration is captured here and the measured value determined.
Reflector
Reflector unit with hollow triple reflector
Purge air unit
To supply purge air to the SR-unit and the reflector to protect against contamination and
high gas temperatures. Use one purge air unit each for the SR-unit and the reflector
depending on the application. The blower types for the SR-unit resp. reflector are each
designed differently depending on the application.
Purge air fixtures for the SR-unit and reflector
To fit the SR-unit and reflector on the mounting flanges. These include the purge air con-
nections to connect the purge air hoses from the purge air unit and sockets for the connec-
tion cable as well as to connect external sensors (purge air unit filter monitor, temperature
sensor PT1000, on the SR side)
maintcalpardiag
GM
EvaluationUnit
CO
CO
2
H
2
O
mg/
m
3
236
Ref.conditions
Hum:wet
Measuring Operation
Service
Warnin
Malfunction
Sender/receiver unit
(SR-unit) Reflector
Evaluation unit
EvU
Inputs/outputs,
analog, binary
CAN bus
CAN bus
N2(provided by
customer)
N2(provided by
customer)
N2(provided by
customer)
Further information on the purge air unit
▸ Refer to Purge Air Unit Operating Instructions.

16 GM700 · Operating Instructions · 8011543 V3.1 · © SICK AG
Product Overview
Evaluation unit
The evaluation unit in the GM700 measuring system serves as user interface and is
responsible for measured value processing and output as well as control and monitoring
functions. The EvU can be located in the vicinity of the SR-unit. It can also be located up to
about 1000 meters from the sampling point, e.g. installed in the switch center or monitor-
ing center, and performs functions such as:
●Output of measured values, computed data and operating states
●Communication with the peripheral equipment
●Output of error messages and other status signals
●Control of automatic test functions and access during service (diagnosis)
Connection cables
Flanges with tube
To install the purge air fixtures of the SR-unit and reflector on
the gas duct. The purge air fixtures are fitted on the flanges
and then the SR-unit resp. reflector fitted on the purge air fix-
ture. ANSI or DIN flanges provided by the customer can be
used alternatively to the flanges supplied.
2.3 GM700 options and accessories
●Terminal box for CAN bus with 24 V power supply
The optional terminal box is available for distances between SR-unit and EvU larger
than 4 meters via a CAN bus cable provided by the customer. The total length of all CAN
bus connections in the GM700 measuring system can be up to 1000 meters.
●Cover plate for purge air fixture of the sender/receiver unit
To maintain purge air supply in cases where this must remain in operation at the mea-
suring location when the SR-unit is dismounted.
●Weatherproof cover for SR-unit and purge air unit
Required for assembly outdoors – dimensional drawings
 p. 103, §9.9
●Chart recorder, single or multi-channel, for measured value recording. Protocol(s) can of
course be produced using customer systems.
Cable type Part No.
Cable (CAN bus) SR-unit – purge air fixture, length 0.8 m 2 023 704
Connection cable1) SR-unit – reflector; various lengths available, e.g.
5, 10, 12, 15 or 24 m
1) One length included in scope of delivery
Scope of delivery
●Cable (CAN bus) SR-unit – evaluation unit, length 4 m
●Extensions up to 1000 m (with terminal box, No. 2020440)
●Scope of delivery
●Option
Cable 2) SR-unit purge air fixture – filter monitor of purge air unit, 5 m
(only for version Cross-Duct and GMP probe)
2) Included in scope of delivery
2 032 143
2 cables2) SR-unit purge air fixture – filter monitor of purge air unit,
length 2 m extension 6 025 923
Cable SR-unit purge air fixture – filter monitor of purge air unit, length
3 m extension (only for Cross-Duct and GMP probe version) 6 028 663

Product Overview
GM700 · Operating Instructions · 8011543 V3.1 · © SICK AG 17
●Air heater for purge air supply
For special application conditions to prevent condensate. An air heater is required when
the difference between gas temperature and dew point temperature is too small. The
following practical rule of thumb serves as guideline:
An air heater is recommended when
Gas temperature [°C] – dew point temperature [°C] < abs. humidity [%].
Values are compared without considering the units of measure.
2.4 Measuring principle
The light of the laser diode radiates through the sample gas and is then detected by a
photo diode. The laser diode wavelength is set to a single absorption line of the sample gas
component. This absorption line is scanned by modulating the wavelength and then the
transmission signal (relation between signal sent and received) captured by a photo diode.
An appropriate signal evaluation returns the magnitude of the absorption line from which
the gas concentration is then calculated. This method is called Tunable Diode Laser Spec-
troscopy (TDLS) or Tunable Diode Laser Absorption Spectroscopy (TDLAS).
A laser specially developed for gas analysis is used as light source in the GM700. This laser
diode radiates a wavelength with a narrow line width so that an absorption line can be reli-
ably scanned. A Peltier element and a temperature sensor fitted in the laser diode enclo-
sure ensure a precise temperature and therefore exact wavelength stabilization of the sys-
tem.
The laser beam from the sender/receiver unit travels through the active measuring path
and then impinges on the reflector on the other side of the gas duct. The beam is then
reflected back to the sender/receiver unit. After the beam has passed through the measur-
ing path twice, during which laser light absorption specific to the gas occurs, the light is
focussed on a receiver optics.
2.4.1 Reference cuvettes for wavelength stabilization
The GM700 is equipped – depending on the device version - with:
●A permanently filled cuvette for the adjustment of the analyzer laser diode to the refer-
ence position of the gas absorption line (Line-Locking).
or
●a flow cuvette which serves to stabilize the wavelength by feeding test gas from a test
gas cylinder when the measuring component concentration in the sample gas is not
adequate
 p. 74, §7.5.2.
2.4.2 Signal evaluation
The optimized algorithms of the GM700 evaluation electronics process the measurement
signal of the receiver element together with the corresponding parameters based on the
TDLS measuring method. This is based on the physical characteristics of the gas mole-
cules that absorb light energy in certain wavelengths. These optimized algorithms ensure
the concentrations of sample gas components are determined without cross-sensitivities
to other gases. The differential absorption measurement also eliminate dust influences.

18 GM700 · Operating Instructions · 8011543 V3.1 · © SICK AG
Product Overview

Project Planning Information
GM700 · Operating Instructions · 8011543 V3.1 · © SICK AG 19
GM700
3Project Planning Information
Project Planning Checklist
Initial onsite installation
Preparations for electrical installation

20 GM700 · Operating Instructions · 8011543 V3.1 · © SICK AG
Project Planning Information
3.1 Work steps from system selection to start-up
Application changes
If you make changes to the specifications ordered for your application or if a device is to be
used for an application different to the one originally planned, please pass this information
onto your local sales representative so that we can determine the application options
under changed conditions and whether new adjustment/parameter settings are required.
The following steps are normally taken before starting-up the measuring system
●Project planning
 »Project Planning Checklist« (p. 20)
●Initial onsite installation
▸ Following preparatory work normally carried out by the customer is described on
p. 23, §3.3:
▸ Flange assembly  p. 24, §3.3.3
▸ Preparation for purge air unit assembly  p. 27, §3.3.4
▸ Laying signal and power supply cables to the sampling point,  p. 27, §3.3.4
●Assembly preparation for the EvU,
 p. 27, §3.3.6
▸ Possibly preparation of signal cables for the interface to peripheral equipment,
 p. 27, §3.4
●Device installation
To allow speedy start-up, the following components are normally installed ready for
operation before the start-up date; see also p. 31, §4.
– Purge air unit
– Evaluation unit(s)
●Start-up
The actual start-up is carried out by trained personnel or Customer Service. This work is
described on §6 (
 p. 47). The main activities are adjustment tasks on the GM700 sys-
tem related to the application.
3.2 Project Planning Checklist
Project planning, step by step
The following Checklist simplifies performing and controlling project planning measures
required before start-up in the correct sequence. Technical data and dimensional drawings
of system components, see p. 95, §9 and following.