WP
4
PotentiaMeter
Troubleshooting
60
SOLUTION:
• The thermopile in your chamber, which
measures sample temperature, may have
become contaminated. Refer to Chapter 10 for
directions on cleaning.
• If you weren’t using Decagon’s KCl verifica-
tion standards, high readings may indicate that
the salt solution you are using is not in equilib-
rium.
4. PROBLEM:
Message on screen displays the following (exam-
ple):
SOLUTION:
• The sample is too dry for the instrument to
read accurately. If your sample has a water
potential that is above the detection limits of the
instrument, this message will come up. Essen-
tially, it means that there is not enough sample
Sample too dry
< -301.8 MPa
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