Xylem handylab pH LF 12 - Manual (Page 69)

handylab pH/LF 12 What to do if...
69 ba75370e03 11/2009
6.2 Conductivity system messages
Error message
OFL
Error message
E3
6.3 General errors
Display LoBat
Instrument does
not react
to keystroke
Display
to
Probe symbol
flashes
Cause Remedy
The measured value lies outside
the measuring range
– Measuring cell not connected – Connect measuring cell
– Cable broken – Replace measuring cell
Cause Remedy
– Measuring cell contaminated – Clean cell and replace it if
necessary
– Unsuitable calibration
solution
– Check calibration solutions
Cause Remedy
– Batteries almost empty – Exchange the batteries (see
section 5.1 M AINTENANCE )
Cause Remedy
– Operating condition undefined
or EMC load unallowed
– Processor reset:
Switch the instrument on
while pressing the > key
Cause Remedy
– Time-out of the interface – Check the instrument that is
connected
Cause Remedy
– Calibration interval expired – Recalibrate the measuring
system