2. SYSTEM OVERVIEW
Page 13 © 2005 DH Instruments, Inc.
1. Connection to FPG8601’s PPC3
pressure controller TEST(+) port in
control cabinet, 1/4 in. SWG
2. Connection to FPG8601’s PPC3
pressure controller TEST(-) port in
control cabinet, 1/4 in. SWG
3. Connection to valve driver manifold in
control cabinet, (8) channel pneumatic
4. Connection to RPM4 TEST(+) port in
control cabinet, 1/4 in. SWG
5. Connection to utility vacuum source,
1/4 in. SWG
6. Connection to PG7601’s PPC3 pressure
controller TEST(+) port in control
cabinet, 1/4 in. SWG
Figure 8. Pneumatic Interconnections Box, bulkhead
2.1.2 CONTROL CABINET
The ADCS-601 Control Cabinet is a 19 inch rack mount enclosure into which are mounted
the PPC3 pressure controllers that provide automated pressure control for the PG7601 and
FPG8601 pressure standards and an RPM4 Reference Pressure Monitor used to perform the
validation comparison of the PG7601 and FPG8601 (see
Figure 9). Also included in the
control cabinet are electrical power connections and a Gas Supply Panel (see Section 2.1.3)
which sets and indicates gas pressure supplies to various parts of the system.
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