Crison MultiMeter 44 Manual Del Usuario página 76

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Troubleshooting
Error displayed
Same buffer / standard
C. Difference > 30%
Standard temperature
< 15 °C
> 30 °C
74
Cause
The standard used in a 2 or 3 point
calibration is identical to precedent
During conductivity calibration the
difference between the constants gets >
30%
The calibration solutions have different
temperatures.
Resolution
Examine the buffer solution. Make sure
that the buffer used matches the buffer
specified in configuration. Replace the
buffer solution. Make sure of the
temperature specification in
configuration.
Insert the probe into the appropriate
standard and read again.
Examine the probe, replace if
necessary.
Make sure the calibration solutions
have the same temperature.

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