Xylem handylab pH 11 User Manual
Page 39
Advertising
handylab pH 11
What to do if...
39
ba75366e04
01/2011
Obviously incor-
rect
measured values
Instrument does
not react to key-
stroke
Display
to
Cause
Remedy
pH electrode:
– pH electrode unsuitable
– Use suitable electrode
– Temperature difference
between buffer and test
sample too high
– Adjust temperature of buffers
or test samples
– Measurement procedure not
suitable
– Follow special procedure
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
– Time-out of the interface
– Check the instrument that is
connected
Advertising