wtw Multi 197i - What to do if....; pH system messages

Multi 197i What to do if...
67
ba75339e04 07/2009
6 What to do if...
6.1 pH system messages
Error message 0FL
Error message 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 obsolete – Replenish electrolyte or
replace electrode
– Electrode obsolete – Replace electrode
– Electrode broken – Replace electrode
Measuring instrument:
– Incorrect calibration procedure – Select correct procedure
– Incorrect solution temperature
(without temperature sensor)
– Set up correct temperature
– Socket damp – Dry socket