Conductivity Troubleshooting, continued...
Standard
calibration fails,
and k factor is
less than 0.075,
0.75 or 7.5,
(depending on k
factor of sensor).
1. White protective cover is
not fitted or upside down.
2. Standard solution is
inaccurate.
3. Sensor may have a build-
up of conductive material,
such as salt.
4. Sensor is faulty.
5. Faulty instrument.
6. k-factor incorrectly set if
using k=0.1 or k=10
sensor.
The white protective cover
MUST be fitted for correct
readings. The vent hole must
be towards the cable end of
the sensor.
Replace standard solution.
Clean sensor, as per the
instructions detailed in
section 21.1.
Return sensor to factory for
repair or replacement.
Return to factory for repair.
Set the correct k-factor, as
per section 16.
Inaccurate
readings, even
when calibration is
successful.
1. Sensor may have a build-
up of dirt or oily material
on sensor wires.
2. Platinum-black coating
has worn off.
Clean sensor, as per the
instructions detailed in
section 21.1.
Sensor requires
replatinisation. Return to the
factory, or see details in
section 21.2.
1. Sensor may have a build-
up of dirt or oily material
on sensor wires.
Clean sensor, as per the
instructions detailed in
section 21.1.
Readings are low
or near zero.
1. Sensor may have a build-
up of dirt or oily material
on sensor wires.
2. Sensor is not immersed
deeply enough.
3. Sensor is faulty.
4. Faulty instrument.
5. k-factor incorrectly set if
using k=0.1 or k=10
sensor.
Clean sensor, as per the
instructions detailed in
section 21.1.
Immerse sensor at least to
the vent hole in the white
plastic cover.
Return sensor to factory for
repair or replacement.
Return to factory for repair.
Set the correct k-factor, as
per section 16.
Display flashes
“ATC” and “LIMIT”
The Temperature is not
within the ATC limits.
Cool/Heat solution before
taking measurements.
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