wtw MultiLab P5, Operation Manual

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Troubleshooting Troubleshooting
224
BA61101/08.00/Pla/MLP5-E2 BA61101/08.00/Pla/MLP5-E2
225
Dissolved oxygen
Cal Error AR
ÀCal
time-out
Calibration: Measured value not stable.
Possible cause / Action:
- Membrane contaminated / Clean
membrane or regenerate probe
- Membrane moist
/ Dab membrane dry
- Temperature probe moist
/ Dab temperature probe dry
- Temperature difference between probe
and calibration vessel too high
/ Wait for temperature adjustment
- Reference electrode contaminated
/ regenerate probe
- Too much water in calibration vessel
/ Remove superfluous water from
calibration vessel. At vessels with
sponge only moisten the sponge
- Probe defective / Change probe
Cal Error
ÂOº
Measurement: Missing calibration data.
- Possible cause / Action:
- RESET performed / Calibrate
- Initial setup / Calibrate
Âmenu
Oº
Í AR
5,7
m¥/L 21.5°C
Measurement and calibration: Probe is
leaky.
- Possible cause / Action:
- Membrane damaged
/ Change membrane
- Membrane head was not screwed on
tight enough / Tighten membrane head
with a paper towel
Âmenu
Oº
Î AR
15,72
m¥/L 21.5°C
Measurement and calibration:
Electrolyte solution used up.
Action: Regenerate probe.
T= 21.6°C
OxiCal
S= OFL
AR
Calibration: Slope outside of
admissible range.
Admissible range: 0.6 up to 1.25
Possible cause / Action:
- Membrane contaminated / Clean
membrane or change membrane head
- Membrane moist
/ Dab membrane dry
- Gold electrode contaminated
/ Regenerate probe
- Silver electrode contaminated
/ Regenerate probe
- Too much water in calibration vessel
/ Remove superfluous water from
calibration vessel. At vessels with
sponge only moisten the sponge
- Probe defective / Change probe