Xylem handylab multi 12 - Manual (Page 69)

handylab multi 12 What to do if...
69 ba75371e03 11/2009
6.2 Oxi system messages
Error message
0FL
Error message
E3
Error message
E7
AR flashes
continuously
Cause Remedy
Display range exceeded
Oxygen sensor
– Not connected – Connect the probe
– Cable broken – Replace probe
– Depleted – Replace probe
– Short-circuit between gold and
lead electrode
– Clean probe and replace it if
necessary
Cause Remedy
Invalid calibration
Oxygen sensor
– Electrolyte solution depleted – Regenerate probe
– Membrane contaminated – Clean membrane
– Electrode system poisoned – Regenerate probe
– Worn out – Replace probe
– broken – Replace probe
Cause Remedy
Membrane damaged
– Membrane damaged – Regenerate probe
– Membrane head not screwed
on tight enough
– Screw membrane head tight
Cause Remedy
No stable measured value
– Membrane contaminated – Clean membrane