Spectrex 20/20MPI - Commercial IR3 Flame Detector - Manual (Page 7)

Table of Contents vii
Table of Contents
Model 20/20MPI Mini Triple IR (IR3) Flame Detector
User and Maintenance Manual .......................................................................... i
Legal Notice .................................................................................................... iii
Release History ............................................................................................... iv
About this Guide .............................................................................................. v
Abbreviations and Acronyms ............................................................................. vi
1 Introduction .............................................................................................. 1
1.1 Product Overview ................................................................................... 1
2 Technical Description ................................................................................ 3
2.1 Features ............................................................................................... 3
2.2 Principles of Operation ............................................................................ 3
2.2.1 Hydrocarbon Fire Detection ............................................................... 3
2.2.2 Identifying the CO2 Peak .................................................................. 3
2.2.3 Limitations of IR-IR Flame Detectors .................................................. 4
2.2.4 Advantages of IR3 Technology ........................................................... 4
2.2.5 Modbus RS-485 ............................................................................... 5
2.2.6 Types and Models ............................................................................ 5
3 Performance .............................................................................................. 7
3.1 Detection Sensitivity .............................................................................. 7
3.1.1 Standard Fire: ................................................................................. 7
3.1.2 Sensitivity Ranges: .......................................................................... 7
3.1.3 Other Fuels ..................................................................................... 8
3.2 Cone of Vision ....................................................................................... 9
3.3 False Alarms Prevention ......................................................................... 10
4 Operation ................................................................................................ 13
4.1 Visual Indications .................................................................................. 13
4.2 Output Signals ...................................................................................... 14
4.2.1 Optional Latching ............................................................................ 15
4.2.2 Built-In-Test ................................................................................... 15
4.3 Detector Mode Setup ............................................................................. 16
4.3.1 Detector Setting ............................................................................. 16
4.3.2 Detector Functions .......................................................................... 16
4.3.3 Detector Default Setup .................................................................... 18