SCHOTT handylab multi 12, Operating Manual

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handylab multi 12 What to do if...
67
6 What to do if...
6.1 pH system messages
Error message
0FL 0FL 0FL 0FL
Error message
E3 E3 E3 E3
Cause Remedy
pH electrode:
– Not connected – Connect electrode
– Air bubble in front of the
diaphragm
– Remove air bubble
– Air in the diaphragm – Extract air or
moisten diaphragm
– Cable broken – Replace electrode
– Gel electrolyte dried out – Replace electrode
Cause Remedy
Electrode
– Diaphragm contaminated – Clean diaphragm
– Membrane contaminated – Clean membrane
– Moisture in the plug – Dry plug
– Electrolyte out of date – Replenish electrolyte or
replace electrode
– Electrode worn out – Replace electrode
– Electrode broken – Replace electrode
Measuring instrument:
– Incorrect calibration procedure – Select correct procedure
– Incorrect solution temperature
(without temperature probe)
– Set up correct temperature
– Socket damp – Dry socket