Lab 850 What to do if...
57
ba75890e01 11/2009
Obviously incorrect
measured values
Instrument does not
react to keystroke
You want to know which
software
version is in the
instrument
Cause Remedy
pH electrode:
– pH electrode unsuitable – Use a suitable electrode
– Temperature difference
between buffer and test sample
too high
– Adjust temperature of buffer
or sample solutions
– Measurement procedure not
suitable
– Follow special procedure
Cause Remedy
– Operating condition undefined
or EMC load unallowed
– Processor reset:
Press and hold the <SC>
key and switch the meter on
Cause Remedy
– E. g., a question by the service
department
– Switch on the meter.
During the display test,
display the software version
with <OK>.
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