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S8000 -100 User Manual
38
97606 Issue 1, June 2021
WARNINGS AND FAULTS
4.1
Fault Codes
No.
Name
Description
1
Mirror PRT Failure
Chilled Mirror sensor Pt100 resistance out of
range
2
Ambient PRT Failure
Remote Temperature probe Pt100
resistance out of range
3
Chiller PRT Failure
Cold finger Pt100 resistance out of range
4
RESERVED
5
Mirror temperature too high
Mirror temperature exceeded 130 °C
6
Stirling emergency error
Sensor Cooler control PCB emergency alarm
7
Optics setpoint search failed
Optics calibration failed during DCC
8
Optics outside max. operating limit Optics reflected signal out of range (high)
9
Optics outside min. operating limit
Optics reflected signal out of range (low)
10
Cooling Saturated timeout
TEC drive in maximum cooling mode
beyond allowable time limit
11
Heating Saturated timeout
TEC drive in maximum heating mode
beyond allowable time limit
12
RESERVED
13
Pressure input failure
Pressure transmitter signal <3.6mA or >21
mA
14
Optics contamination
Mirror requires cleaning followed by Optics
Calibration
15
Sensor over temperature
Cold finger temperature exceeded 50 °C for
>30s.
4.2
Optics Warning
Throughout the life of the instrument, periodic cleaning of the mirror surface and optics
window will be required. The frequency of this depends upon operating conditions and
the potential in the application for contaminants to be deposited on the mirror.
The S8000 -100 will notify the user on the state of mirror contamination. The instrument
will initially give a warning in the sensor status display when contamination is detected
but will continue to operate. Cleaning the mirror then pressing the
Calibrate Optics
button is necessary when this warning is displayed. If the contamination reaches levels
which will drastically affect performance, a fault alarm will trip, causing the instrument
to switch to standby mode until action is taken.
For remote indication of an optics warning, the process alarm contact can be set to trip
whenever the optics warning is active. See Section 3.5.10 for further information.
See Section 5.1 for mirror cleaning instructions.
Summary of Contents for Michell Instruments S8000 -100
Page 1: ...S8000 100 Chilled Mirror Hygrometer User Manual 97606 Issue 1 June 2021 nbn Austria GmbH ...
Page 51: ...S8000 100 User Manual Michell Instruments 43 APPENDIX A Appendix A Technical Specifications ...
Page 54: ...S8000 100 User Manual 46 97606 Issue 1 June 2021 APPENDIX B Appendix B Modbus Register Map ...
Page 67: ...S8000 100 User Manual Michell Instruments 59 Notes ...