wtw MultiLab P5, Operation Manual

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Troubleshooting Troubleshooting
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BA61101/08.00/Pla/MLP5-E2 BA61101/08.00/Pla/MLP5-E2
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Sample blank value adjustment:
Very big influence of the sample blank
value. The measuring accuracy is
considerably reduced.
Cause/Action:
- Reduce sample blank value
- Sample turbid / Filter sample,
e. g. ultrafiltration
- Sample colored / Remove coloring,
e. g. oxidation
Sample blank value adjustment:
Very big influence of the sample blank
value. Measurement is impossible.
Cause/Action:
- Reduce sample blank value
- Sample turbid / Filter sample,
e. g. ultrafiltration
- Sample colored / Remove coloring,
e. g. oxidation
Sample blank value adjustment:
Sample blank value reduces the
measuring range for the measurement.
Action:
- Decrease sample blank value
- Dilute sample
Absorbance measurement
Absolute measurement: Zero point of
meter misadusted.
Action:
Perform zero adjustment.
Absolute and relative measurement:
Measuring range of meter is exceeded.
An assessed value is displayed.
- Dilute sample
- Select other wavelength
- Give result as assessed value
Absolute und relative measurement:
Measured value below measuring
range of meter. Measurement is not
possible.
- Dilute sample
- Select other wavelength
Absolute und relative measurement:
Measured value above measuring
range of meter. Measurement is not
possible.
- Dilute sample
- Select other wavelength