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16.2 Conductivity and Salinity Troubleshooting
Symptom
Possible Causes
Remedy
Unit fails to
calibrate, even with
new sensor.
Calibration settings outside of
allowable limits due to
previous failed calibration.
Initialise the unit. See section
14.
Unit attempts Span
calibration instead
of Zero calibration.
Sensor has Zero error.
Thoroughly rinse sensor in
distilled water and allow to
completely dry in air before
attempting zero calibration.
If instrument does not calibrate
at Zero with sensor
disconnected, then the
instrument is faulty.
Standard calibration
fails, and k factor is
greater than 0.133,
1.33 or 13.3,
(depending on k
factor of sensor).
1.
Sensor is not immersed
deeply enough.
2.
Sensor may have a build-up
of dirt or oily material on
sensor wires.
3.
Platinum-black coating has
worn off.
4.
Standard solution is
inaccurate.
5.
Sensor is faulty.
6.
Faulty instrument.
7.
k-factor incorrectly set if
using k=0.1 or k=10 sensor.
Immerse sensor at least to the
vent hole in the white plastic
cover.
Clean sensor, as per the
instructions detailed in section
18.1.
Sensor requires replatinisation.
Return to the factory, or see
details in section 18.2.
Replace standard solution.
Return sensor to factory for
repair or replacement.
Return to factory for repair.
Set the correct k-factor, as per
section 13.
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