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Calibrating the Permeant Sensor
7.
Verify the following Cell Level parameters have been correctly assigned:
Area/Cell:
Package/Film selection:
8.
Verify the following Test Level parameters have been correctly assigned:
Test Mode:
Exam Minutes:
Individual Zero Mode:
9.
After the film has been mounted and test parameters correctly assigned, start testing the
reference sample.
10.
Monitor the progress of the test using the "Cell Status" and "Instrument Status" screens.
When the reference sample has reached equilibrium, advance the cell to the "Test
Complete" state. The sample is usually considered to be at equilibrium when there is no
discernable trend in the data.
NOTE:
Do not advance the test to the Test Complete state unless the certified film is at equilibrium.
11.
Adjust the output of the Permeant Sensor using the "WVTR Calibration" screen. Refer to the
Instrument Help System for more information on performing a Calibration.
NOTE:
Calibration films should be stored in a manner that will keep them clean and free from
wrinkles. MOCON Certified NIST Films should be stored in the provided case. You will need
to use these films again whenever a module needs re-calibration.
5-4
Verify the area is set correctly if not using a Certified film.
Verify that Package is selected if using a Certified film. If using
another film, set the Package/Film buttons to the appropriate
selection for the method used to establish the reference
transmission rate.
Verify the Test Mode parameter is set to continuous mode.
Set the examination time appropriately for the sample being
tested. At least 20 to 30 minutes is recommended.
Determine if an "Individual Zero" phase was used to create the
reference sample. If an "Individual Zero" phase was used set
the Individual Zero control to the "On" position. Set the
Individual Zero Mode parameter to "Beginning".
Revision G
AQUATRAN 3/38 Operator's Manual
MOCON, Inc.
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