TM794200 Rev Ad, March 2019
v
Table of Contents
Document Overview ............................................................................. 12
Technical Description .......................................................................... 13
Definitions of Terms ....................................................................... 14
Spectral Finger Print ...................................................................... 14
Optical Path .................................................................................. 14
Microprocessor Based ..................................................................... 15
Gas Sensitivity .............................................................................. 15
Gas and Mixture Selection and Setting ............................................. 16
HART Protocol ............................................................................... 16
Modbus RS-485 ............................................................................. 17
Light Source Unit ........................................................................... 19
Detector Unit ................................................................................ 20
Zero Calibration Mode (1mA Output) ...................................................... 22
20mA Current Output ................................................................. 24
Relays .......................................................................................... 25