Detcon IR-700 - Manual (Page 3)

Model IR-700
Model IR-700 iii
Table of Contents
1. Introduction ..................................................................................................................................................1
1.1 Description.......................................................................................................................................... 1
1.1.1 Non-Dispersive Infrared (NDIR) Optical Sensor Technology ....................................................... 1
1.1.2 Principle of Operation .................................................................................................................... 2
1.1.3 Performance Characteristics ........................................................................................................... 2
1.2 Sensor Electronics Design .................................................................................................................. 3
1.2.1 Intelligent Transmitter Module....................................................................................................... 3
1.3 Modular Mechanical Design............................................................................................................... 3
1.4 Plug-in Replaceable Sensor ................................................................................................................ 4
2. Installation ....................................................................................................................................................5
2.1 ATEX Operational Guidelines for Safe Use....................................................................................... 5
2.2 Sensor Placement ................................................................................................................................ 6
2.3 Sensor Contaminants and Interference ............................................................................................... 7
2.4 Mounting Installation.......................................................................................................................... 7
2.5 Electrical Installation .......................................................................................................................... 8
2.6 Field Wiring ........................................................................................................................................ 9
2.7 Initial Start Up................................................................................................................................... 11
3. Operation ....................................................................................................................................................12
3.1 Programming Magnet Operating Instructions................................................................................... 12
3.2 Operator Interface ............................................................................................................................. 13
3.3 Normal Operation ............................................................................................................................. 14
3.4 Calibration Mode (AutoZero and AutoSpan) ................................................................................... 15
3.4.1 AutoZero....................................................................................................................................... 15
3.4.2 AutoSpan ...................................................................................................................................... 15
3.5 Program Mode .................................................................................................................................. 17
3.5.1 View Sensor Status....................................................................................................................... 18
3.5.2 Set AutoSpan Level ...................................................................................................................... 19
3.5.3 Set Gas Type& Range .................................................................................................................. 20
3.5.4 Set Gas Factor............................................................................................................................... 20
3.5.5 Set Serial ID ................................................................................................................................. 21
3.5.6 Set Sensor Gain ............................................................................................................................ 22
3.5.7 Signal Output Check..................................................................................................................... 22
3.5.8 Restore Factory Defaults .............................................................................................................. 23
3.6 Program Features .............................................................................................................................. 23
3.6.1 Operational Features..................................................................................................................... 24
3.6.2 Fault Diagnostic/Fail-Safe Features ............................................................................................. 24
4. RS-485 Modbus™ Protocol .......................................................................................................................27
Content Description.............................................................................................................................................27
5.
Service and Maintenance............................................................................................................................29
5.1 Calibration Frequency....................................................................................................................... 29
5.2 Visual Inspection .............................................................................................................................. 29
5.3 Condensation Prevention Packet....................................................................................................... 29
5.4 Replacement of IR Plug-in Combustible Gas Sensor ....................................................................... 29
5.5 Replacement of ITM ......................................................................................................................... 30
5.6 Replacement of IR-700 Sensor Assembly ........................................................................................ 30
6. Troubleshooting Guide ...............................................................................................................................31
7. Customer Support and Service Policy ........................................................................................................34
8. IR-700 Sensor Warranty.............................................................................................................................35
9. Appendix ....................................................................................................................................................36
9.1 Specifications.................................................................................................................................... 36