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6
Put the sensor into operation
User qualification: trained user, see
n
CAUTION!
Incorrect metering due to sensor failure
Possible consequence: Slight or minor injuries. Material damage.
–
If a sensor fails then there may be an incorrect reading at the input of the con‐
troller/measuring
–
This may result in uncontrolled metering
–
Therefore, the operator should make sure that no subsequent damages can
result from this
CAUTION!
Incorrect metering due to premature ageing of sensor
Possible consequence: Slight or minor injuries. Material damage.
Measure: Do not electrically disconnect the sensor during measuring breaks.
Exception: If there is a break between measurements lasting more than a week and
the proportion of disinfectant in the sample water falls during this period to 0 ppm
then you must electrically disconnect the sensor.
–
An extra run in period will be necessary following operation without disinfectant.
Switch on metering equipment with a time delay if necessary.
Run-in period
The sensor requires a specific run in period to display a steady display value.
Initial commissioning:
Recommissioning:
Electrolyte or membrane change:
* the exact run-in time depends on the application.
Put the sensor into operation
Ä Chapter 1.3 'Users' qualifications' on page 38
1 - 24 h (typically 6 h)*
1 - 24 h (typically 6 h)*
1 - 6 h
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