INFICON Composer Elite Gas Concentration Monitor - Manual (Page 127)

7 - 5
PN
07
4-
56
6-
P1
B
Composer Elite Operating Manual
7 Attach the leak detector to the other service port.
8 Evacuate the Secondary Containment Chamber (beneath the service port) by
following the leak detector manufacturer’s recommendations.
9 Locate the two helium injection ports closest to the Acoustic Sensor inlet and
outlet tubes (refer to
Figure 7-2 ). Insert the entire length of the needle into the
more easily accessible of the two helium injection ports.
10 Allow the helium to flow into the Acoustic Sensor for at least one minute. If there
is a large leak, the leak rate will quickly exceed 1x10-9 cm
3
/s. For smaller leaks,
a gradual pressure increase will be visible. In this case, keep the needle in
place for three minutes. The leak rate should not exceed 1x10
-9
cm
3
/s.
NOTE: Contact INFICON if the leak rate exceeds 1x10
-9
cm
3
/s.
11 Install VCR-2 Ag-plated stainless steel gaskets (PN 059-0640) and the VCR-2
plugs in the service ports. When installing the gaskets, simultaneously use two
wrenches to avoid stress and damage to the service ports. (Swagelok
recommends tightening gaskets to 1/8 turn past finger-tight for stainless steel
gaskets.)
WARNING
The service ports must be sealed for secondary
containment to function in the event of a diaphragm leak.
7.3 Spare Parts
Table 7-1 Composer Elite spare parts
Part Number Description
059-0196 VCR-4 Gasket, Ag-plated Ni
059-0215 VCR-4 Gasket, Ag-plated Ni,
with Retainer (for ease of installation)
059-0266 VCR-4 Cap
059-0640 VCR-2 Gasket, Ag-plated Stainless Steel
059-0664 VCR-2 Plug
761-618-G1 Leak Test Needle Kit