Determining When To Stop A Test; Choosing A Test Method; The Advanced Test Method; Saved Test Methods - Ametek mocon AQUATRAN 3/38 Operator's Manual

Preparing for a Test

Determining When to Stop a Test

The setting used for the "Test Mode" parameter determines how and when a transmission rate test is
stopped (Test Completion). Four different methods of stopping a transmission rate test are provided. The
four methods are: "Continuous", "Standard", "Convergence By Cycles" and "Convergence By Hours".
The Continuous mode executes until manually stopped by an operator. The Standard mode executes for
the number of cell examination cycles specified by the "Number of Cycles" parameter. The Convergence
modes execute until equilibrium is achieved as defined by the convergence parameters.
Unless the characteristics of the test sample are well understood, the continuous mode should be used. If
the test is stopped prematurely the transmission rate reported will not reflect the true transmission rate for
the material. For more detailed information on the "Test Mode" parameter see the Instrument Help system.

Choosing a Test Method

There are three different ways to specify the parameters that determine how a permeation test is to be
performed. These "Test Methods" are described briefly in the following section. For more detailed
information see the Instrument Help system.

The Advanced Test Method

The Advance Test Method allows the user to specify all the parameters and conditions used to
perform a permeation test. An Advanced Test Method allows the most flexibility in determining how
a permeation test will be executed. The Advanced Test method also allows Test Sequencing.

Saved Test Methods

Saved Test Methods are Advanced Test Methods that have been saved and can be recalled for later
use. Saved test methods are accessed using the "Methods" control displayed at the bottom of any
Advanced Test Method screen.

QC Mode

The QC Mode allows the user to specify all the parameters and conditions used to perform a
permeation test. The QC Mode also allows user to enter pass/fail criteria for easy identification of
good and bad barriers.
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AQUATRAN 3/38 Operator's Manual
MOCON, Inc.