PPCH™, is a pressure generator/controller/calibrator for liquid pressure operation from 1 to 200 MPa (150 to 30 000 psi).
PPCH's outstanding pressure measurement specifications are made possible by Fluke Calibration's exclusive quartz reference pressure transducer (Q-RPT) modules.
Q-RPTs measure pressure by measuring the change in the natural oscillating frequency of a quartz crystal with pressure induced stress. To be qualified for use in a Q-RPT module, each transducer is individually evaluated and characterized using automated primary pressure standards. Only transducers exhibiting required levels of linearity, repeatability and stability are selected. A proprietary compensation model, derived from more than 15 years experience with thousands of quartz pressure transducers, is applied to optimize the metrological characteristics needed in a transfer standard.
PPCH can be delivered with a low cost utility sensor for applications in which the high precision and stability of a Q-RPT are not required.
Q-RPTs available for PPCH
|Q-RPT Designation||SI Version Maximum Range
Absolute Gauge (MPa)
|US Version Maximum
Range AbsoluteGauge (psi)
1. Hi Q-RPT only, not available in Lo Q-RPT position.
There is a lot more to covering a wide range of test devices with a single pressure controller than "% of reading" measurement uncertainty.
In addition to the necessary measurement uncertainty, PPCH offers the full pressure control and feature adaptability that are needed for true rangeability in test and calibration applications. Infinite ranging gives PPCH unprecedented versatility in adapting to a wide variety of devices to be tested. With the easy to use AutoRange function, a few simple key strokes or a single remote command string at the start of a test adapts every feature of the controller to optimize it for a specific range.
A PPCH controller can be configured with up to four Q-RPT modules. These can be internal or external to the PPCH controller. External Q-RPTs are in RPM4™ Reference Pressure Monitors. The RPM4's Q-RPTs then become part of the PPCH system and are managed by PPCH. External Q-RPTs must be disconnected or protected by valves when PPCH is used at pressure greater than the external Q-RPT range. Examples of possible PPCH system configurations include:
PPCH includes all the features you expect in today's state-of-the-art instruments and much more:
PPCH General Specifications
|Power Requirements||85 to 264 VAC, 50/60 Hz, 75 W max|
|Normal Operating Temperature Range||15 to 35 °C|
|Weight (Typical)||50 kg approx (110 lb)|
|Dimensions||30 cm H x 52 cm W x 50 cm D (12 in. x 20.5 in. x 20 in.) with enclosure 6U H rack mount version|
|Communications Ports||RS232 (COM1, COM2), IEEE-488.2|
|Operating Modes||Gauge, absolute|
|Pressure Ranges||Atmosphere to 200 MPa (30,000 psi)|
|Operating Media||Sebacate oil standard. Others optional (consult Fluke Calibration)|
|Internal Reservoir Volume||250 cc (external unlimited)|
|Drive Air Supply||70M - 500 kPa (75 psi), 300 l/m (10cfm) 140M - 500 kPa (75 psi), 450 l/m (15cfm) 100M - 700 kPa (100 psi), 300 l/m (10cfm) 200M - 700 kPa (100 psi), 450 l/m (15cfm)|
|Pressure Connections||DRIVE AIR SUPPLY 1/8 in. NPT F TEST DH500 (equivalent to AE F250C, HIP HF4)|
|Utility Sensor||Precision/Resolution ± 0.10 % span / 0.001 % span|
|Drivers||(8) 12V, 1 A max total output|
|CE Conformance||Available, must be specified|
|Control Modes||Dynamic: Sets target pressure within hold limit and continuously adjusts pressure to remain at target value. Static: Sets target pressure within hold limit and shuts off control, allowing pressure to stabilize naturally. Monotonic: Sets pressure to target, then maintains very slow ramp in same direction as pressure increment. Ramp: Sets and maintains user specified rate of change of pressure. Piston Gauge: Control PPCH is controlled by PG7302™ to automate piston gauge pressure control.|
|Control Precision||To ± 0.003 % of Q-RPT span|
|Control Volume||0 to 100 cc, 50 cc optimum (operates in larger volumes but pressure stabilizing time increases)|
|Control Speed||Slew rate (0 to full scale): 60 sec. Dynamic mode typical time to Ready: 90 to 120 sec. (Reduced by increasing hold limit or using monotonic control)|
|Lowest Controllable Pressure||1 MPa (150 psi)(lower in optimum conditions and with PG7302)|
Measured and delivered pressure (Q-RPT)
|Warm Up Time||30 minute temperature stabilization recommended from cold power up|
|Resolution||To 1 ppm, user adjustable|
|Calibration||A2LA accredited calibration report included|
|Q-RPTs||Less than A200M||A200M|
|Precision1||± 0.012 % of reading5||±0.015 % of reading5|
|Predicted One Year Stability2||± 0.005 % of reading||± 0.005 % of reading|
|Measurement Uncertainty Delivered||3 ± 0.013 % of reading5||± 0.018 % of reading5|
|Pressure Uncertainty (Dynamic Control Mode)4||± 0.016 % of reading5||± 0.020 % of reading5|
---- model accessoires
|A100M||PPCH Quartz Reference Pressure Transducer (Q-RPT)|
|A140M||PPCH Quartz Reference Pressure Transducer (Q-RPT)|
|A200M||PPCH Quartz Reference Pressure Transducer (Q-RPT)|
|A40M||PPCH Quartz Reference Pressure Transducer (Q-RPT)|
|A70M||PPCH Quartz Reference Pressure Transducer (Q-RPT)|
|Footswitch||Remote [ENTER] footswitch|
|RS232 Cable||9-pin, 2 m for PPC3 COM1 or PPC3-to-RPM4 connections|
|Reservoir||External fluid reservoir|
|RPM4||Reference pressure monitor for external Q-RPTs|
|PPCH 08-SP||Special fluid|
|PPC4 07||Special calibration|
|PPCH 06-01||Enclosure (for bench applications)|
|PPCH 05-01||CE mark|
|PPCH 04-02||SI units version|