wtw Oxi 170, Operating Instructions Manual

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Oxi 170 What to do if ...
109 ba24105e08 11/2010
6 What to do if ...
CAL Err
(Calibration error)
Display
OFL
Measured value flashes
Display
Display
Err
AoPt
Note
More possible errors and their remedies are given in the respective
sensor operating manual.
Cause Remedy
– There is no valid calibration – Recalibrate
Cause Remedy
– The measured D.O. or
temperature value is outside
the measuring range
– Check the measurement
conditions
Cause Remedy
– Output range of the linked
recorder output exceeded
– Adjust recorder range
Cause Remedy
– Sensor:
Electrolyte solution depleted
– Replace membrane head and
refill (see sensor operating
manual).
Cause Remedy
– Sensor:
Membrane defective
– Replace membrane head and
refill (see sensor operating
manual).
Cause Remedy
– Hardware error – Contact WTW