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2271A
Operators Manual
30
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 3 millimeters (1/8 inch) inside diameter and properly rated
for the pressure.
Connect the pressure supply to the SUPPLY port on the manifold on the rear
panel of Product. The SUPPLY port connection is 1/4 inch NPT or 1/4 inch BSP.
Use a pressure-connecting hose or tube of the appropriate pressure rating.
The supply pressure should be equal to the greater of 70 kPa (10 psi) or 110 %
of the maximum Product control pressure. The supply pressure should never
exceed 23 MPa (3300 psi). Lower gas pressure sources can be used, but should
exceed the maximum desired test output pressure by at least 10 %.
WCaution
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 an 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.
EXHAUST Port (Vacuum Pump if Required)
The EXHAUST port can be left open to atmosphere under most conditions. A
vacuum pump is required to control pressure below 20 kPa (3 psi) gauge. 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. It
is acceptable to add tubing to the EXHAUST port to reduce noise. Do not block
the exhaust tube.
WCaution
To prevent damage to the Product:
• Never connect a pressure supply to or block 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. Pressure is exhausted out of the exhaust
port when controlling down in pressure.
When controlling down in pressure, the Product exhausts gas through the
EXHAUST port. The flow of this gas can be greater than what the vacuum pump
can support. When working at higher pressures, Fluke Calibration recommends
that the user turn off the vacuum pump. The pump should be equipped with an
auto-vent valve.
1.888.610.7664 sales@GlobalTestSupply.com
Fluke-Direct.com
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