wtw MultiLab P5 Operation Manual page 223

Multiparameter instrument for the total water and wastewater analysis
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Troubleshooting
TC Cal
®2= 1034µS/cm
T2=
23.3°C
Ã
TC>3.50%/K
TC Cal
ÀCal Error
BA61101/08.00/Pla/MLP5-E2
Determined temperature coefficient
higher than 3.50 %/K.
Possible cause:
- The temperature coefficient of the
sample solution is above 3.50%/K
/ Set temperature coefficient to 0 %/K
and perform the compensation manually.
Note: Temperature coefficients
above 3.5 %/K are very rare.
- The sample solution has chemically
changed during the measurement, e. g.
carbon dioxide has been absorbed or
lime has precipitated.
/ Depending on the aim of the
measurement and the characteristics of
the sample solution.
- Unusable or defective measuring cell
/ Change measuring cell.
There is no valid value for the
temperature coefficient stored in the
meter.
Action: Determine or enter temperature
coefficient.
223

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