AquaLab
12. Troubleshooting
81
16. DUO PROBLEM:
Message on the screen displays the following:
SOLUTION:
1) When a moisture content reading is not shown, the water ac-
tivity or temperature for that reading is beyond the scope of
the moisture sorption isotherm. is can happen under the
following conditions:
a. e isotherm equation calculates a moisture content that
is less than 0% or greater than 100% with the given water
activity.
b. e control temperature is signi cantly di erent than the
isotherm temperature.
Make sure that the sample’s water activity and the instrument’s
controlling temperature are within the scope of the selected mois-
ture sorption isotherm model.
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