PACE Pressure Controller User Manual
[EN] English 6 - 1 K0443 Revision A
6 Reference and Specification
6.1 Installation notes
The PACE instrument pressure controller/calibrator requires an independent pressure supply
and set of connections. The exception is the reference connection, this provides a reference
to atmosphere for gauge sensors and barometric sensors.
The instrument must have the correct supply pressure and a suitable supply medium (Ref:
Data sheet, specification).
The type and density of the supply gas does not affect the accuracy of pressure
measurement, assuming that the Unit Under Test (UUT) is at the same height as the
controller or gas head correction is accurately set.
Gas supply
For normal operation the instrument requires a positive supply of at least 110% of range but
less than the MWP, with a gas regulator.
For absolute operation, negative gauge operation or, if the installation requires a fast
response around atmospheric pressure, a vacuum source must be connected to the
negative supply. For recommended configurations (Ref:, Installation, Section 2, figures 2-4, 2-
5 and 2-6).
To achieve control performance the source pressure must be maintained at 10% full-scale
above the required set-point.
Controller performance is maintained during slow variations in source pressure down to a
source pressure of 20% full-scale range.
Supply conditioning equipment
Supplies should be provided with an isolation valve and any other necessary conditioning
equipment.
Note: To protect the control module
, 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.
Maximum Working Pressure
If the measured +ve source pressure exceeds
the limits below then display a persistent
message box as shown.
Clear this message by selecting “OK”.
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