TM40/40U Rev. (Af), February 2019
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Table of Contents
Glossary and Abbreviations .................................................................... 12
Hydrocarbon Fire Detection .............................................................. 19
Heated Optics ................................................................................. 19
HART Protocol ................................................................................ 19
RS-485 Modbus .............................................................................. 20
Product Certification ........................................................................ 20
Performance Considerations ................................................................... 22
Detection Sensitivity ....................................................................... 22
Cone of Vision ................................................................................ 24
False Alarm Prevention .................................................................... 25
Visual Indicators ............................................................................. 26
Output Signals ................................................................................ 26
Detector Status .............................................................................. 27
Auxiliary Relay as End-of-Line .......................................................... 29
Continuous Feature Test .................................................................. 29
Response to Fault Indication ............................................................ 30
Built-In-Test (BIT) .......................................................................... 30