OX-TRAN Model 2/22 Operator’s Manual
Calibrating the Permeant Sensor
MOCON, Inc.
Revision R
G-3
5.
The Calibration Film Test Procedure should be performed using an “Advanced” Test
Method. For information on how to set up an Advanced Test see the instrument Help
System.
6.
Verify the following Instrument Level parameters have been correctly assigned:
Cell Temperature:
If using certified films, the test temperature must be 23.0 °C. If
calibrating with another known film, use the temperature at
which the transmission rate for the film was measured.
Instrument ReZero:
Instrument ReZero
Enabled
ReZero Frequency
1
ReZero Exam Minutes
25
NOTE:
Use of the “Test ID”, “Sample ID” and “Material ID” fields is advised to document the all of the
relevant information on the specific material used to perform the test.
7.
Verify the following Cell Level parameters have been correctly assigned:
Package/Film selection:
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.
Area/Cell:
Verify the area is set correctly when not using Package mode.
8.
Verify the following Test Level parameters have been correctly assigned:
Test Mode:
Verify the Test Mode parameter is set to continuous mode.
Exam Minutes:
Set the examination time appropriately for the sample being
tested. At least 25 minutes is recommended.
Individual Zero Mode:
Use of an “Individual Zero” test phase is strongly advised. Set
the Individual Zero control to the “On” position. Set the
Individual Zero Mode parameter to “Beginning”.
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.