Description
Issue 5 - June 2005 Page 12 of 64 Pages
Description
The device is available in two versions: 4-20 mA or SE Ex, with or without gas level
display.
An additional “Options circuit board” is available that provides an isolated 4-20 mA
output, TWA alarm relay and data logger with RS-232.
Two 1.2AH lead-acid batteries can be fitted inside the device’s enclosure to provide
continued operation for several hours if AC power is interrupted.
Lead-acid batteries
Display board
Pellistor board
Options circuit board
Main circuit
board
Cable entry area
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