Michell Instruments Optidew User Manual page 53

Possible Fault Codes
No. Name
Mirror Overheat
06
Optics Fault (Search Fail)
02
Optics Fault (< Min Limit)
03
Optics Fault (> Max Limit)
04
Heating Saturation
08
Cooling Saturation
09
Mirror Pt1000 Fault
01
Temp. Probe Fault
04
Pressure Tx. Fault
07
Mirror Contaminated
17
Mirror Pt1000 Fault (Open)
11
Mirror Pt1000 Fault (Low)
12
Mirror Pt1000 Fault (High)
13
Temp. Probe Fault (Open)
08
Temp. Probe Fault (Low)
09
Temp. Probe Fault (High)
10
Pressure Tx. Fault (Open)
14
Pressure Tx. Fault (Alarm)
15
Pressure Tx. Fault (Fail)
16
Michell Instruments
Description
Mirror Temperature above 130°C
Unable to establish clean mirror condition
Signal below allowable limit
Signal above allowable limit
TEC drive saturated in heating mode beyond
allowable time limit
TEC drive saturated in cooling mode beyond
allowable time limit
Chilled Mirror sensor internal Pt1000 fault
External temperature probe fault
External pressure transmitter fault
Mirror requires cleaning followed by Optics Calibration
Chilled Mirror sensor Pt1000 open circuit
Chilled Mirror sensor Pt1000 short circuit/below lower
limit
Chilled Mirror sensor Pt1000 above upper limit
External temperature probe open circuit
External temperature probe short circuit/below lower
limit
External temperature probe above upper limit
Pressure transmitter signal < 0.2mA (open circuit)
Pressure transmitter signal 3.6-3.8mA OR 20.5-21mA
Pressure transmitter signal > 21mA, or < 3.6mA
Optidew User's Manual
43