RAEGuard
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EC / LEL / IR User’s Guide
Contents
1. General Information......................................................................... 3
1.1 General Specifications............................................................... 6
RAEGuard
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EC Specifications ................................................. 6
RAEGuard
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IR Specifications................................................... 7
RAEGuard
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LEL Specifications................................................ 9
2. Operation....................................................................................... 10
2.1 Physical Description ................................................................ 11
2.2 Installation and Access Instructions ........................................ 11
Mounting.................................................................................. 12
Instrument Assembly Removal................................................ 13
Electrical Wiring....................................................................... 14
Instrument Assembly Installation............................................. 15
Earth Grounding Instructions................................................... 16
2.3 Display And User Interface...................................................... 18
User Interface .......................................................................... 18
Magnet Key ............................................................................. 18
Using The Magnet Key ............................................................ 19
System Initialization................................................................. 19
Reading Display ...................................................................... 20
Alarm Contacts ........................................................................ 20
2.4 Calibration ............................................................................... 21
Zero Calibration ....................................................................... 22
Span Calibration ...................................................................... 23
2.5 Advanced Menu (EC & LEL) ................................................... 25
2.6 Advanced Menu (IR)................................................................ 31
2.7 Restoring Default Values (EC & LEL) ................................... 31
3. Theory of Operation....................................................................... 33
4. Maintenance .................................................................................. 35
5. Troubleshooting............................................................................. 35
Table A: EC Sensor configuration ................................................ 37
6. ModBus/RS-485 Information ......................................................... 38
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