Spectrex 40/40U-UB - UV Flame Detector - Manual (Page 7)

Table of Contents vii
Table of Contents
Models 40/40U and UB UV Flame Detectors User Guide ................................... i
Legal Notice .................................................................................................... iii
Warranty ........................................................................................................ iii
Release History ............................................................................................... iv
About this Guide .............................................................................................. v
Abbreviations and Acronyms ............................................................................. vi
1 Introduction .............................................................................................. 1
1.1 Overview .............................................................................................. 1
1.2 Model and Types .................................................................................... 2
1.3 Features and Benefits ............................................................................. 4
1.4 Principles of Operation ............................................................................ 4
1.4.1 Detection Principles .......................................................................... 4
1.4.2 Heated Optics .................................................................................. 5
1.4.3 HART Protocol ................................................................................. 5
1.4.4 RS-485 Modbus ............................................................................... 6
1.4.5 Product Certification ......................................................................... 6
1.5 Performance Considerations .................................................................... 7
1.5.1 Detection Sensitivity ........................................................................ 7
1.5.2 Cone of Vision ................................................................................. 9
1.5.3 False Alarms Prevention ................................................................... 10
1.5.4 Visual Indicators ............................................................................. 11
1.5.5 Output Signals ................................................................................ 12
1.5.6 Detector Status .............................................................................. 13
1.5.7 Auxiliary Relay as End-of-Line Resistor .............................................. 14
1.6 Internal Detector Tests .......................................................................... 14
1.6.1 Continuous Feature Test .................................................................. 14
1.6.2 Built-In-Test (BIT) .......................................................................... 15
2 Installing the Detector ............................................................................ 19
2.1 General Guidelines ................................................................................ 19
2.2 Unpacking the Product ........................................................................... 20
2.2.1 Checking the Product Type ............................................................... 20
2.3 Required Tools ...................................................................................... 21
2.4 Certification Instructions ........................................................................ 22