Spectrex Xenon 700 SIL Open-Path Gas Detection System - Manual (Page 7)

Table of Contents vii
Table of Contents
Xenon 700 SIL Open-Path Gas Detection System
User's and Maintenance Manual ....................................................................... i
Legal Notice .................................................................................................... iii
Release History ............................................................................................... iv
About this Guide .............................................................................................. v
Abbreviations and Acronyms ............................................................................. vi
1 Scope ......................................................................................................... 1
1.1 Product Overview ................................................................................... 1
2 Technical Description ................................................................................ 3
2.1 Features ............................................................................................... 3
2.2 Applications ........................................................................................... 4
2.3 Principle of Operation ............................................................................. 4
2.3.1 Definitions of Terms ......................................................................... 4
2.3.2 Spectral Finger Print ......................................................................... 5
2.3.3 Optical Path .................................................................................... 5
2.3.4 Microprocessor Based ....................................................................... 5
2.3.5 Gas Sensitivity ................................................................................ 5
2.3.6 Gas and Mixture Selection and Setting ................................................ 6
2.3.7 Flash Source ................................................................................... 6
2.3.8 Heated Optics .................................................................................. 7
2.3.9 HART Protocol ................................................................................. 7
2.3.10 Handheld Unit ................................................................................. 8
2.3.11 Modbus RS-485 ............................................................................... 8
2.3.12 Tilt Mount ....................................................................................... 8
2.4 Product Marking ..................................................................................... 8
2.5 Models and Types .................................................................................. 9
2.6 Description ........................................................................................... 10
2.6.1 Flash Source Unit ............................................................................ 11
2.6.2 Detector Unit .................................................................................. 12
3 Operational Modes ................................................................................... 15
3.1 Operation Modes ................................................................................... 15
3.1.1 Normal Mode .................................................................................. 15
3.1.2 Maintenance Call Mode (3mA Output) ................................................ 15
3.1.3 Fault Mode ..................................................................................... 16