INFICON Composer Gas Concentration Controller - Manual (Page 129)

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Composer Operating Manual
5 Close the Leak Test Ports with a copper gasket following the manufacturer’s
suggested tightening procedure or proceed to
section 5.6.2 on page 5-3 to
verify Secondary Containment Vessel’s leak integrity.
CAUTION
The use of a copper gasket is recommended because
of the ease of obtaining seal integrity compared to
harder gasket materials.
5.6.2 Leak Detection of the
Secondary Containment Vessel
CAUTION
Do not evacuate and attach a leak detector to the Leak
Detector Port until the Transducer’s temperature drops
below 30 °C.
CAUTION
It is recommended that the leak integrity of the
Secondary Containment Vessel be verified upon
installation, and at least annually thereafter.
CAUTION
Do not allow pressure of process piping to exceed 1
atmosphere gauge, be especially careful on
repressurization of the piping.
Testing the integrity of the Secondary Containment Vessel requires attaching a
Leak Detector to each Leak Test Port; one at a time. In order to verify the
Secondary Containment’s integrity:
1 If necessary, remove the caps and gaskets from the VCR-4 Leak Test Ports.
Simultaneously use two wrenches to avoid excessive stress and damage to
the port.
2 Attach the leak Detector to the first Leak Test Port and evacuate the
Secondary Containment Vessel following the leak Detector manufacturer’s
procedures.