Ise System Messages - wtw inoLab pH/ION Level 2 Operating Manual

Obviously incorrect
measured values
values
Error message
Error message,
Cause
pH electrode:
– pH electrode unsuitable
– Temperature difference
between buffer and
sample too large
– Measuring procedure not
suitable
6.2

ISE system messages

Cause
0FL 0FL
0FL 0FL
Ion sensitive electrode:
– Not connected
– Cable broken
Cause
E3 E3
E3 E3
Ion sensitive electrode:
– Slope not in the range
50 ... 70 mV or
23 ... 35 mV
– Moisture in the plug
– Electrode obsolete
– Electrode broken
Measuring instrument:
– Calibration procedure:
order of the standards
wrong in three point
calibration
– Socket moist
What to do if...
Remedy
– Use suitable electrode
– Adjust temperature of
buffers or samples
– Follow special procedure
Remedy
– Connect electrode
– Replace electrode
Remedy
– Replace electrode
– Recalibrate
– Dry plug
– Replace electrode
– Replace electrode
– Select correct order
– Dry socket
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