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1
11
1
Pressure source
4
Regulate to between 110% full-scale and MWP
6
Unit under test
9
Optional differential connection
10 Vacuum generator
12 Exhaust to atmosphere
Figure 6: Pneumatic Connections with Negative Gauge Pressure Generator
Note: Refer to the PACE User Manual, Reference and Specification for details of other
system components.
*
High pressure gas exhaust - depending on pressure range.
** Optional vacuum system kit, allows the -ve port gas to be directly discharged to atmosphere, by-
passing the vacuum pump.
†
Optimum controller transient response and minimum time to set-point may be degraded if either the
pneumatic supply or vacuum system has restricted flow. Installing a reservoir volume, which has
larger capacity than the load volume, located in close proximity to the controller supply ports can
improve the controller response.
‡
Optional negative gauge pressure generator kit, allows the -ve port to directly discharge to
atmosphere, by-passing the negative gauge pressure generator.
To protect the control module (item 8), for ranges above 100 bar, from over-pressure a suitable
protection device (such as a relief valve or bursting disc) must be fitted to limit the applied supply
pressure to below the MWP.
Optional differential connection kit.
© 2008 Baker Hughes, a GE company – All rights reserved.
3
4
2
7
10
12
2
Supply isolation valve
7
Optional reservoir †
11 Source pressure (regulated compressed air supply)
13 Check valve ‡
SUPPLY
+
-
8
7
14
3
5
8
a
14 Manual external vent valves
PACE CM Safety Instructions and User Guide-English | 9
OUTPUT
VENT REF
5
6
14
13
Filter
Diffuser *
Protection device
Atmosphere
9
a
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