High-Pressure Modular Controller
Rear-Panel Manifold Pressure Connections
15
SUPPLY Port
The pressure SUPPLY port must be connected to a regulated source of clean,
dry air or nitrogen as directed in
Specifications
. Fluke Calibration recommends
that tubing be at least 2 millimeters (0.083 inch) inside diameter and properly
rated for the pressure. Length in excess of 3 meters (10 ft) may increase
readiness time in some situations.
A continuous, regulated pressure supply of clean, dry, non-corrosive gas at 10 %
greater than the highest pressure range should be connected to the Product
SUPPLY port. For optimal control performance, the supply pressure should be no
greater than 100 times the full scale of the active measurement range. Never
exceed the maximum pressure of the Product chassis. The supply pressure can
be viewed under the diagnostics
Setup>Diagnostic>Control
.
W
Caution
To prevent damage to the system, make sure to select the
correct size adapter fitting with the correct thread type. Ensure
that all hardware used is rated to adequate working pressure,
and that all equipment is in proper working order (for example,
no cracks or stripped threads).
To prevent damage to the Product, be sure to connect the
pressure supply to the SUPPLY port. Connecting to another
port can damage the Product.
To prevent damage to the system and to prevent waste of
supply gas, install the PCM prior to connecting the supply
pressure to the system.
EXHAUST Port (Vacuum Pump if Required)
Typical operation is with the EXHAUST port open to atmosphere (no restriction).
A vacuum pump is required to control pressure below atmosphere. Control
performance below 7 kPa (1 psi) gauge may be degraded if a vacuum pump is
not used. Tubing should have a minimum inside diameter of 6 millimeters
(1/4 inch). In confined areas, pipe the exhaust port outside to prevent an
accumulation of nitrogen (or other supply gas). It is acceptable to add tubing to
the exhaust port for the primary purpose of reducing noise. Do not block the
exhaust tube.
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Caution
To prevent damage to the Product:
Never connect a pressure supply to or plug the Product
EXHAUST port.
To avoid building up pressure on the EXHAUST port or on a
vacuum pump connected to the EXHAUST port, the vacuum
source should either be continuously ON or the EXHAUST
port should be bypassed to atmosphere when the vacuum
source is OFF. This is because when a supply pressure is
applied to the Product SUPPLY port and the Product is not
in the vent ON condition, there is typically a constant gas
exhaust through the Product EXHAUST port.
