Hach CDC401 Series, Руководство пользователя

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Figure 3 Install the shroud
8.3 Storage
Between uses, make sure the probe is dry and store it in ambient conditions. Rugged probes may be
stored with the shroud installed if the storage container is sufficiently large.
Section 9 Troubleshooting
Problem Possible cause Solution
Decreased probe performance
causes slow stabilization and
prevents accurate calibrations
or measurements. The probe has mineral or sample
buildup on the electrodes. Clean the probe. Refer to
Clean the probe on page 8.
Sample properties cause slow
stabilization or inaccurate
measurements. The sample absorbs carbon
dioxide (CO
2
) from the air, which
forms carbonic acid and slowly
increases the conductivity in low
ionic strength (LIS) or high purity
samples.
Use the LIS chamber for
LIS/high purity samples to
prevent CO
2
absorption.
Procedure problem causes
slow stabilization and prevents
accurate calibrations or
measurements. An incorrect standard solution was
used or the standard solution is
contaminated. Use the specified standard
solution of good quality.
Air bubbles are around or below
the probe tip. Carefully tap or shake the
probe to remove air bubbles.
The conductivity settings in the
meter are not correct. Make sure that the settings
for temperature correction,
reference temperature and
stability are correct.
10 English