Supplement 1 for Operating Instructions C79000-G52xx-C216-03
A5E02769382-03, 03/2012
17
Fault and maintenance requirements
The faults and maintenance requirements of the H
2
S sensor for the most part correspond to those of the O
2
sensor and are
described in the 'Maintenance' section of the operating instructions C79000-G52xx-C216-03.
The following faults and maintenance requirements are specific to the H
2
S sensor:
Table 1 H
2
S specific fault messages
No. Fault message/
Maintenance requirement
Possible cause(s) Remedy
S3 Measured value channel 3 (H
2
S)
beyond tolerances
Measured value display: *****
Sensor defective Replace sensor
S14 Channel component error Sensor installed with incorrect
measuring range
Install sensor with correct measuring
range
S28 H
2
S protection function Sample gas concentration too high Check sample gas
S29 Zero point of the H
2
S sensor
beyond tolerances
Purge time too short for calibration Repeat calibration
S30 Sensitivity of the H
2
S sensor too
low
Sensor depleted Replace sensor
W5 H
2
S sensor Measuring reserve almost depleted Replace sensor at the next opportunity
Message S3 appears when the
measuring capacity is depleted
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