wtw inoLab Oxi Level 2, Operating Manual

Page: 63 / 82

What to do if...
147
6 What to do if...
6.1 pH system messages
Cause Remedy
pH electrode:
– Not connected – Connect electrode
– Air bubbles in front of the
diaphragm
– Remove air bubbles
– Air in the diaphragm – Extract air or
moisten diaphragm
– Cable broken – Replace electrode
– Gel electrolyte dried out – Replace electrode
Cause Remedy
pH 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 tempera-
ture (without temp. probe)
– Set up correct
temperature
– Socket damp – Dry socket
Error message,
OFL
OFL OFL
OFL
Error message,
E3 E3 E3 E3