DH Instruments PPCK PLUS, Operation And Maintenance Manual

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PPCK+™ Operation and Maintenance Manual
Page 1
©2001 DH Instruments, Inc .
1. I
NTRODUCTION
1.1 PRODUCT OVERVIEW
PPCK+ is a stand-alone, microprocessor driven, pressure controller/calibrator intended to precisely
measure and control precise gas pressure as needed for the calibration and testing of pressure
measuring instruments. PPCK+ offers very high performance combined with maximum versatility
and ease of use. PPCK+ is designed to cover very high gas pressures, especially ranges above 7
MPa (1 000 psi). PPCK+ measures and controls pressure in ranges from 0 to 1 000 psi (7 MPa) up
to
0 to 10 000 psi (70 MPa), in both gauge and absolute measurement modes. For pressure ranges of
7 MPa (1 000 psi) and below, see
DHI’ s PPCK+ pressure controller/calibrator.
PPCK+ measures pressure using a high precision reference pressure transducer (RPT) and an
on-board barometer. Pressure control is achieved by pneumatically actuated high pressure valves
and a patented thermal pressure control (TPC) system for very fine adjustment.
PPCK+ can be controlled locally by the operator through the front panel display, keypad and special
function keys or remotely over an RS232 or IEEE-488 interface using ASCII character
command strings.