PPC2+™ Operation and Maintenance Manual
Page 11
©2001 DH Instruments, Inc.
2.3.4
CONNECTING TO A PRESSURE SUPPLY (SUPPLY PORT)
Using a pressure connecting hose of appropriate pressure rating, connect the pressure supply
to the SUPPLY connection on the rear panel of PPC2+. The PPC2+ SUPPLY connection is
1/8 in. NPT female.
The supply pressure should be equal to the maximum PPC2+ range +10 %. Lower gas
pressure sources can be used but should exceed the maximum desired test output pressure
by 10 to 20 %.
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2.3.5
CONNECTING A VACUUM PUMP (EXHAUST PORT)
For PPC2+ to set pressures under atmosphere and/or to reliably set pressure under
3 psi (20 kPa) gauge other than zero gauge, a vacuum pump must be connected to the
EXHAUST port.
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2.3.6
CONNECTING TO THE DEVICE UNDER TEST (TEST AND TEST(-) PORTS)
If you are using a SPLT, see Section 2.3.6.1 before proceeding to connect the device
under test.
Using a pressure connecting hose of appropriate pressure rating, connect the device or
system to be tested to the TEST port of the PPC2+. The PPC2+ TEST connection is
1/4 in. NPT female.
If PPC2+ is equipped with a gauge RPT (GXXXX), it has a TEST port and a TEST(-) port.
The TEST(-) port is connected to the low side of the gauge RPT. This connection is normally
left open to atmosphere. It can also be connected to the low side of a differential device that
is being calibrated or tested. With very low pressure devices, this will enhance the calibration
results by helping assure that PPC2+ and device under test reference ports are at the
same pressure.
Summary of Contents for PPC2+
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