Michell Instruments XZR500ST, User Manual

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XZR500 User’s Manual
40 97137 Issue 8, April 2017
MAINTENANCE
Calibration
fault
3 .
Calibration error.
Probable cause(s):
• The calibration gas value that was stated in the parameter’s sequence in
Access Code 0.12 does not correspond to the actual calibration gas value.
Press RESET ( Figure 7) or check that the test gas value in Access Code 0.12
is the same as the actual calibration gas value (refer to Section 3.3.2.1).
• Faulty MSRS - this must be replaced
TC wire break
General alarm
4 .
Alternately with
Furnace temperature
“Value”
This message appears when there is a problem with the thermocouple or the
thermocouple wire.
Probable cause(s):
• The thermocouple’s connection between the electronic system and the
sensor is cut.
• Faulty thermocouple - replace the MSRS.