Xylem Lab 850, starting from serial number 09470315 Bedienungsanleitung PDF herunterladen (Seite 57)

Lab 850 What to do if...

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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Xylem Lab 850, starting from serial number 09470315 Bedienungsanleitung Seite 57