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OX-TRAN Model 2/12 R Operator's Manual
Chapter 5: Permeant Sensor Calibration
The Permeant Sensor in the OX-TRAN Model 2/12 R equires periodic calibration to ensure accuracy when
measuring the oxygen transmission rate.
NOTE:
MOCON is not responsible for problems resulting from improper use of the Permeant Sensor
Calibration function or use of an inadequate transmission rate reference material.
Permeant Sensor Performance Check
The instrument should be calibrated on a regular basis. MOCON recommends a Calibration Check be
performed at least monthly. The instrument should be checked more frequently when testing low barrier
materials or performing a high volume of tests.
The accuracy of the oxygen sensor can only be checked by using a film to generate a reference
transmission rate. The transmission rate of this film must be known to a high degree of accuracy. In
addition, it is highly desirable that the film have a traceable certificate of accuracy. MOCON strongly
discourages using any material that does not meet these conditions.
Mocon strongly advises using only our Certified Films to check the accuracy of the Permeant Sensor
NOTE:
Mocon has available certified NIST traceable films that cover the usual testing range. Call
MOCON in the USA at (763) 493-6370 for more information.
Performing a Permeant Sensor Calibration
Calibration of the Permeant (Oxygen) Sensor is a two step process. First, a film sample with a known
transmission rate must be tested. Refer to the "Permeant Sensor Calibration Test Setup" in this chapter for
information on setting up a film test. The data from the test can then be used to adjust the permeant sensor.
After suitable data is available the "OTR Calibration" screens can be used to create and assign a Permeant
Sensor calibration record. Refer to the Instrument Help System for more information on creating a Permeant
Sensor calibration record.
After a Permeant Sensor calibration record has been created and saved it can be viewed, assigned,
inactivated or deleted using the "OTR Calibration" screen. Refer to the Instrument Help System for more
information on using the OTR Calibration screen.
MOCON, Inc.
Revision L
Permeant Sensor Adjustment
5-1
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