DH Instruments PPC4, Operation And Maintenance Manual

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1. INTRODUCTION
Page 1 © 2009 DH Instruments, a Fluke Company
1. Introduction
1.1 Product Overview
PPC4 is a stand-alone pressure controller intended for precision setting and control of gas pressure into a
closed volume as is commonly needed for the calibration and testing of pressure measuring instruments.
It has been designed to provide very high performance combined with maximum versatility and ease of use.
PPC4 can be equipped with a low cost utility sensor for pressure monitoring or one or two Quartz Reference
Pressure Transducers (Q-RPTs) to allow it to set and measure pressure with very low measurement
uncertainty. Up to two external Q-RPTs in an external Reference Pressure Monitor (RPM4) can also be
integrated into a PPC4 system. In some cases, a barometer is included.
Pressure control is achieved by a patented pneumatic module based on digitally controlled solenoid valves
and differential pressure regulators.
PPC4 is controlled locally by the operator using a front panel display, keypad and function keys or
remotely by a computer using ASCII character command strings over RS232, IEEE-488.2 or Ethernet.
PPC4 models are available to measure and control pressure in ranges from as low as - 3 to 3 kPa (0.4 psi)
to as high as 0 to 14 MPa (0 to 2 000 psi) in absolute, gauge and compound gauge measurement modes.
1.2 Specifications
1.2.1 General Specifications
Power Requirements
100 to 240
VAC
(-15%, +10%)
, 50-60 Hz, 70 VA max consumption
Operating Temperature Range 10 to 40 °C
Storage Temperature Range -20 to 70 °C
Vibration
Meets MIL-T-28800D
Weight 16.6 kg (36.5 lb)
Dimensions
Ventilation
PPC4: 19 cm H x 35 cm W x 41 cm D (7.5 in. x 13.8 in. x 16.1 in.)
PPC4-ui: 19 cm H x 35 cm W x 45 cm D (7.5 in. x 13.8 in. x 17.7 in.)
Ventilation
To prevent product overheating, provide proper ventilation. Allow 10 cm (4 in.)
clearance from rear panel cooling fan.
Microprocessors Motorola 68302, 16 MHz
Remote communication interfaces
RS232 (COM1, COM2), USB (front panel)
Optional: IEEE-488.2, Ethernet and rear panel USB
Fuses
1 A, 250 VAC fuse, 5 x 20 mm, time lag type fuse. Internal power supply fuse
not replaceable by operator: 2A, 250 V (UV 440-2 power supply), 3.15A,
250 V (NFS40-7612 power supply)
Pressure Ranges Vacuum to 14 MPa (2 000 psi). Low uncertainty measurement provided by
selection of quartz reference pressure transducer(s) (Q-RPTs)
Operating Medium
Any clean, dry, non-corrosive gas

Warning
User is responsible for any and all safety precautions
associated with hazardous, flammable or toxic gas ventilation
and containment.
Pressure Connections
TEST (+), TEST (-): 1/8 in. NPT F
SUPPLY: 1/8 in. NPT F
EXHAUST: 3/8 in. NPT F
ATM: 10-32 UNF
Pressure Limits
Maximum working : pressure: Hi Q-RPT maximum
Maximum test pressure : w/out damage: 115 % Hi Q-RPT maximum
Recommended supply : pressure: Maximum control pr 10 %