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1. INTRODUCTION
Page 1 © 2004-2007 DH Instruments, a Fluke Company
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1.1 PRODUCT OVERVIEW
RPM4 is a stand-alone, microprocessor driven, reference pressure monitor intended to precisely
measure gas or liquid pressure in a wide variety of pressure calibration, measurement and testing
applications. It has been designed to provide very high performance and extensive features combined
with maximum versatility and ease of use.
RPM4 uses one or two quartz reference pressure transducer (Q-RPT) modules and, in some cases a
barometer, to measure pressure.
RPM4 can be controlled locally by the operator using its front panel display and keypad or remotely by a
computer using ASCII character command strings transmitted over its standard RS232 or IEEE-488.2
interface.
RPM4 models are available in ranges from as low as - 3 to 3 kPa (0.4 psi) to as high as 280 MPa (40 000 psi)
in absolute, gauge, compound gauge and differential measurement modes.
RPM4 can be integrated into a PPC3 Pressure Controller/Calibrator System to serve the PPC3’s external
pressure measuring reference (see the PPC3 Operation and Maintenance Manual).
A special configuration of RPM4 designated RPM4-AD is available for air date (altitude and
airspeed) applications. The RPM4-AD model has its own specific manual p/n 550148.