Section 8 Troubleshooting
Problem Possible cause Solution
Decreased probe performance
causes slow stabilization and
prevents accurate calibrations
or measurements.
The sensor cap is loose or
damaged.
Tighten or replace the sensor cap.
Always replace the sensor cap and
the iButton at the same time. Refer
to Replace the sensor cap and
iButton on page 9.
Water is between the
sensor cap and the probe
lens.
Remove the sensor cap and dry the
probe lens. Refer to Clean the probe
on page 8.
The sensor cap is not
sufficiently conditioned.
Keep the probe in the BOD bottle
with some water for more time, then
try the calibration again.
The temperature or
pressure sensor does not
operate correctly.
Compare the temperature and
pressure readings of the probe with
external measurements. The
pressure sensor reads absolute
pressure, which is not adjusted to
sea level. If the measurements are
not correct, contact technical
support.
The lot code on the iButton
is not the same as the lot
code on the sensor cap.
Replace the sensor cap and iButton.
Sample properties cause slow
stabilization or inaccurate
measurements.
The measurement was not
adjusted for salinity in the
sample.
Measure the salinity of the sample
and enter the value as a salinity
correction factor in the meter.
Procedure problem causes
slow stabilization and prevents
accurate calibrations or
measurements.
Air bubbles are around or
below the probe tip.
Carefully tap or shake the probe to
remove air bubbles.
The LDO sensor cap is in
direct sunlight.
Install the protective shroud.
The calibration mode in the
meter is set to factory.
If user calibration is necessary,
change the calibration mode in the
meter.
Section 9 Consumables
Note: Product and Article numbers may vary for some selling regions. Contact the appropriate distributor or refer to
the company website for contact information.
Description Quantity Item no.
LDO sensor cap replacement kit (includes iButton) 1 5811200
BOD bottle with glass stopper, 300 mL 1 62100
Beaker, 250 mL, polypropylene 1 108046
Probe stand for standard Intellical probes 1 8508850
Probe cable depth markers for rugged Intellical probes 5/pkg 5828610
Disposable wipes, 11 x 22 cm 280/pkg 2097000
12 English
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