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Setting Up
Setting the Gas Supply Pressures
Set the Gas Supply Pressures as follows:
1.
Set the Carrier Gas cylinder or main line regulator pressure to 35 psi.
2.
Set the Test Gas cylinder or main line regulator pressure to 35 psi.
3.
Set the pressure on the Carrier Gas regulator-tee so that the gauge reads 25 psi.
4.
Set the pressure on the Test Gas regulator-tee so that the gauge reads 25 psi.
Caution:
The maximum Carrier Gas pressure to the instrument must not exceed 32 psi.
Input pressures greater than 32 psi (2.2 bar) will damage the system.
Caution:
The maximum Test Gas pressure to the instrument must not exceed 32 psi.
Input pressures greater than 32 psi (2.2 bar) will damage the system.
Note: When using compressed gas cylinders, the tank must be replaced when the pressure falls below
300 psi (on the first stage of the regulator).
System Outgassing
Before the system can be used any air trapped in the gas lines and instrument must be purged out. After
purging the carrier gas supply system, the instrument must be outgassed. After the initial purge, residual
oxygen may still be present in the seals and void spaces within in the instrument. Out-gassing removes this
residual oxygen from the system.
To out-gas the system follow these steps:
1.
Verify the Gas Supply Pressures are set correctly; see setting the Gas Supply Pressures on
page 2-8.
2.
Turn the instrument on.
3.
Mount a film in all Test Cell positions, for more information see "Mounting Samples in the
Test Cell" on page 5-4.
4.
Load and Clamp the Test Cells, for more information refer to "Loading and Unloading the
Test Cell" on page 5-6.
5.
Let the system out-gas for at least one hour before starting a test.
2-8
OX-TRAN Model 2/28 Operator's Manual
Revision J
MOCON, Inc.
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