Dräger REGARD-1 Installation, Operation And Maintenance Manual page 4

Contents
Maximum cable resistance for three-wire-transmitters ................................................................. 24
Two-wire 4-20 mA transmitter with safety barrier .......................................................................... 25
Polytron SE Ex (Pellistor) measuring head..................................................................................... 26
Relay outputs...............................................................................................................................27
24 V digital outputs for A1 and A2............................................................................................28
Remote reset input......................................................................................................................29
Configuration and calibration .................................................................................... 30
Set measuring range ..................................................................................................................30
Calibrating a 4-20 unit ................................................................................................................33
Zero calibration ................................................................................................................................... 33
Span calibration .................................................................................................................................. 33
Calibrating an SE Ex unit...........................................................................................................36
Set the sensor current........................................................................................................................ 36
Zero calibration ................................................................................................................................... 38
Calibrate span ..................................................................................................................................... 38
Configuring alarms......................................................................................................................39
A1 alarm ............................................................................................................................................... 40
A2 alarm ............................................................................................................................................... 41
A3 alarm ............................................................................................................................................... 41
Fault alarm ........................................................................................................................................... 41
Setting alarm thresholds on 4-20 units............................................................................................ 42
Setting alarm thresholds on SE Ex units......................................................................................... 45
Maintenance ................................................................................................................ 48
Fault finding..................................................................................................................................48
Specifications.............................................................................................................. 50
Issue 5 - June 2005 Page 4 of 64 Pages