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Section 7
7.1
Error messages
Problem/display screen
Communication with probe
EEPROM error
Overflow area
Clean the probe
Offset error
Calibration error
Calibration insufficient –
Calibration insufficient +
Probe error
Battery is empty
Incorrect probe
Error time/date
1
The battery charger must agree with local and national safety regulations and may not be part of the shipment. If the charger is
not part of the shipment, charge the batteries with a charger available in your country. Make sure that the charger agrees the
battery specifications.
2
If the message is repeated, send the instrument for repair
7.2
Informative messages
Display
Wait
Manufacturer standard
Troubleshooting
Caused by
The probe is not connected to the
instrument
Values cannot be saved
Concentration too high
Probe is dirty
Calibration point set incorrectly
(calibration point too close to the zero
point)
No calibration available, calibration
points set incorrectly (upper and lower
calibration points transposed)
Further calibration point with lower
concentration is missing
Further calibration point with greater
concentration is missing
Technical error in the probe
Battery not charged
Probe has been replaced but not
re-registered or correctly registered on
instrument
Time/date implausible
Caused by
Calibration is being recorded
Measurement value is outside the
standard (only for turbidity)
Action
– Plug in the probe
– Check the connection to the probe
– Correct probe number
Switch the instrument off and then back
on again
– Probe is measuring in an unsuitable
medium
– It may be necessary to recalibrate
– Clean the probe
– May be triggered by inhomogeneous
measuring medium
Recalibration required
Recalibration required. (1-point default
calibration of DS curves not sufficiently
precise for measuring medium)
Further calibration point with lower
concentration is required
Further calibration point with greater
concentration required
– Switch the instrument off and then
back on again
– If the message is repeated, send the
probe for repair
1
Charge the battery fully
– Connect the correct probe
– Use code 390 to release DS curve for
new probe and recalibrate
– Switch the instrument off and then
back on again
– Check the time/date set
– If required, change the clock
2
batteries
Measure/note
Wait (probe in calibration medium)
Value is above the DIN standard of
4000 FNU (NTU)
31
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