WP
4
PotentiaMeter
Troubleshooting
59
Decagon to make arrangements for repairs.
2. PROBLEM:
Readings are slow or inconsistent.
SOLUTION:
• The sample chamber may be dirty. Refer to
Chapter 10 of the manual for directions on
cleaning the sample chamber.
• Some samples absorb or desorb moisture
very slowly, causing measurements to take
longer than usual, and nothing can be done to
speed up the process. Refer to Chapter 6 for fur-
ther explanation.
• A fan blade may be broken inside the block.
If even the KCl standard takes a long time to
read, and the sample chamber is clean, you may
have a broken chamber fan blade. This is espe-
cially likely if you have just cleaned the cham-
ber. If you suspect this may have happened,
contact Decagon for details on replacement.
3. PROBLEM:
Water potential readings on KCl standards are
too high/low and a calibration adjustment cannot
be made any higher/lower.
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