PACE Pressure Controller User Manual
[EN] English 2 - 7 K0443 Revision A
Figure 2-5, Pneumatic Connections with negative gauge pressure generator
Notes: (Ref: Section 6 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.
To protect the control module, for ranges of 70 bar and above 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.
1) Pressure source 2) Conditioner 3) Filter
4) Regulate to between 110% full-scale and MWP 5) Diffuser *
6) Unit under test 7) Optional reservoir †
8) Protection device
9) Optional differential connection
a) Atmosphere
10) Vacuum generator ‡ 11) Source pressure (regulated compressed air supply)
12) Exhaust to atmosphere 13) Check valve ** 14) Manual external vent valves
OUTPUT
SUPPLY
VENT REF
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