Owner manual

handylab LF 12 What to do if...
53
ba75367e04 01/2011
6 What to do if...
LoBat display
Instrument does
not react to key-
stroke
Error message OFL
Error message E3
Display to
Probe symbol
flashes
Cause Remedy
– Batteries almost empty – Replace batteries
(see section 5.1 M
AINTENANCE)
Cause Remedy
– Operating condition
undefined or EMC load
unallowed
– Processor reset:
Press the <CAL> and
<ON/OFF> keys at the same
time and release them again.
The software version is
displayed.
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
– Time-out of the interface – Check the instrument that is
connected
Cause Remedy
– Calibration interval expired – Recalibrate the measuring
system