Oxygen System Messages - wtw inoLab Level 3 Operating Manual

What to do if...
Error message
Error message
Error message
244
14.5
Measuring modules for the inoLab Level 3:
pH, BSB/BOD, pH/Oxi and Multi.
Cause
OFL
Display range exceeded
– Not connected
– Cable broken
– Depleted
– Short-circuit between gold
and lead electrode
Cause
E3
Invalid calibration
– Electrolyte solution
depleted
– Membrane contaminated
– Electrode system poisoned – Regenerate probe
– Worn out
– broken
Cause
E7
Membrane damaged
– Membrane damaged
– Membrane head not
screwed on tight enough

Oxygen system messages

Remedy
– Connect the probe
– Replace probe
– Replace probe
– Clean probe and
replace it if necessary
Remedy
– Regenerate probe
– Clean membrane
– Replace probe
– Replace probe
Remedy
– Regenerate probe
– Screw membrane head
tight