High-End Pressure Controller
CPC8000
28
Operating Instructions - CPC8000
■
Supply
The pressure supplied to the pressure connection labeled “Supply” should be approximately 10%
higher than the full scale of the highest pressure transducer installed in the controller (see the label on
the lower right of the front panel).
■
Exhaust
The pressure connection labeled “Exhaust” is for the vacuum supply. In a gauge pressure version it
can be left open to atmospheric pressure.
If the instrument’s primary pressure range has the minimum pressure in the vacuum region but
is not negative atmosphere, a vacuum regulator will be included. The vacuum regulator included
(6100500023) will need to be connected in-line between a vacuum pump and the exhaust port of the
instrument in order for the instrument to control properly. This vacuum regulator will need to be set to
10% below the minimum range of the primary sensor of the instrument. The vacuum regulator can be
set using a fat-head screwdriver.
■
Vent
The pressure connection labeled “Vent” is the exhaust port where the system pressure is vented to the
atmosphere under certain conditions. Leave this port open or connect the optional mufer for noise
reduction.
■
Reference
This is the pressure connection to the reference ports of sensors with ranges <50 psi (4 bar) gauge.
The Reference port should be left open to the atmosphere and should NEVER be connect-
ed to a pressure source.
The higher the supply pressure connected to the Supply port, the higher the pressure which leaves the
system through the exhaust port. If a vacuum pump is connected to the exhaust port, adequate safety
precautions have to be taken to prevent damage to the pump.
If vacuum is connected to the Exhaust port of the controller, negative pressure peaks might occur at the
Measure/Control port for a very short time, when changing from the Measure mode to the Control mode.
Before the system is connected, the user must ensure that suitable protection measures are in place
which exclude overpressuring of the test piece or the system.
■
Measure/Control
The Measure/Control port (when in the Control mode) supplies pressure that is precisely controlled
by the controller. In the Measure mode a pressure applied to the Measure/Control port is measured by
the instrument sensor.
■
Barometric Reference
The Barometric Reference port is connected to the internal barometric sensor and should be
left open to atmospheric pressure.
Summary of Contents for CPC8000
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