APC4000 Automatic Pressure Controller from Condec

The APC4000 will automatically measure and control pressure in ranges from 3 psi to 10,000 psi. Setpoints are entered via the front keypad or via IEEE-488 computer interface. Pushbutton functions for automatic pressure cycling and leak testing are available. Each APC4000 comes with (3) full scale ranges, allowing one unit to cover a very wide pressure range. A Windows-based software package is included for automating the calibration process, including custom pressure profiles, logging of test instrument readings and printing of calibration certificates.

	Accuracy of +/-0.05% of each full scale range
	Pressure ranges from 3 psi full scale to 10,000 psi full scale.
	(3) full scale ranges per instrument
	(10) engineering units for pressure display
	Gauge (psig) or absolute (psia) calibrations.
	Automated software supplied with each unit

Data Sheet in PDF format  

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PPC3 Pressure Controller/Calibrator from DH Instruments

The PPC3 is a third generation product that extends the limits of both measurement and control capabilities. Features are available for both benchtop calibration and fully automated operation. With its improved +/-0.008% of READING uncertainty (for one year!) the PPC3 can cover an extremely wide pressure range at a minimal cost. Up to (2) high-accuracy sensors can be installed in each PPC3 or RPM4 Reference Pressure Monitors can be used to extend the measurement and control range of the PPC3.  DH also supplies COMPASS for Pressure, an automated software package that supports automated calibration, data-logging and report generation.

	Accuracy of +/-0.008% of reading. for one year, fully NIST traceable
	Ranges from 60" H20 to 1,500 psi.

	Control precision of 20 ppm (+/-0.002%) of the current autoranged value
	Fast response; set times of 10-30 seconds.
	Both gauge (psig) and absolute (psia) calibrations on each range
	RS232C and IEEE-488 interfaces standard.
	COMPASS software for automation of calibration and testing.

Data Sheet in PDF format  

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PPCH-G High Pressure Pneumatic Controller/Calibrator from DH Instruments

PPCH-G is similar to the PPC3 show above however it covers ranges up to 15,000 psi

	Accuracy: +/-0.01% of reading for one year, fully NIST traceable
	Ranges up to 15,000 psi

	Internal or external references.
	Both gauge (psig) and absolute (psia) calibrations on each range
	RS232C and IEEE-488 interface standard
	COMPASS software for automation of calibration and testing.

Data Sheet in PDF format  

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PPCH High Pressure Hydraulic Controller from DH Instruments

PPCH is a controller/calibrator for liquid operation up to 30,000 psi. As with the rest of the PPC family of controllers, the emphasis is on high-end performance, minimizing measurement uncertainty and maintaining precise control over a very wide pressure range . . . in a compact and rugged instrument.

Open architecture allows the high-accuracy reference sensors to be inside or outside the PPCH. This gives the option of having the reference near the test articles and it can be independently removed for recalibration, leaving the PPCH chassis in place.

The new AUTORANGE feature allows infinite rangeability, optimizing control and measurement performance for the range currently being tested.  No more manual tuning of control loops.  AUTORANGE takes care of it all.

	Delivered Pressure Accuracy: +/-0.02% reading
	3000 to 30,000 psi ranges
	Internal or external references
	Control precision of 0.003%

	RS232C and IEEE-488 interface standard
	COMPASS software for automation of calibration and testing.

Data Sheet in PDF format  

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RPM4 Reference Pressure Monitor from DH Instruments

The RPM4 is a high-accuracy digital pressure indicator with an unbelievable list of features. Not only is the accuracy state-of-the-art but the RPM4 has on-board valving to protect itself from damage due to overpressure. Each RPM4 can have (1) or (2) high-accuracy sensors to cover an extremely wide range with just a single instrument. A separate on-board barometer allows absolute (psia) sensors to be used in gauge (psig) mode.

	Percentage of READING accuracy
	Either 0.008% or 0.01% for one year
	60" H20 to 40,000 psi ranges
	(1) or (2) high-accuracy sensors per device
	Integrates with PPC3 Pressure Controller
	Gauge and absolute pressures from the same instrument
	Display functions include average pressure, rate of change, Hi/Lo and freeze mode

Data Sheet in PDF format  

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COMPASS for Pressure Calibration Assistance Software from DH Instruments

Finally a universal solution for all your pressure calibration requirements.  COMPASS for Pressure is an off-the-shelf package designed for manual and automated calibration of pressure instruments.  COMPASS can be configured to work with ANY pressure standard, both manual and automated.  Use COMPASS with an automated controller you currently own to begin fully-automated, multi-point pressure tests TODAY, using a minimum of in-house resources.

Writing your own custom software is time-consuming and documentation is always substandard. Now, for less than the cost of typical programming tools, you can use COMPASS as the main 'engine' of your automation efforts.  COMPASS can interface with any reference device you have with either an RS232 or IEEE-488 interface or even an analog output!  If your devices-under-test (DUTs) also have either an analog output or computer interface then you can be running fully-automated calibrations immediately.  COMPASS even supports temperature chambers for thermal cycling of pressure devices, such as pressure transducers.

	Run complete automated calibration sequences on single or multiple DUTs
	Interfaces with DH Intruments PPCs and RPMs as reference standards OR
	Use ANY 3rd party reference standard
	Supports multi-device switching systems for multiple test devices.
	Three versions based on your requirements
	Supports environmental chambers

Data Sheet in PDF format  

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PG7000 Series Piston Gauges from DH Instruments

The DH Instruments PG7000 Series is the current state-of-the-art in primary pressure standards.  The PG7000 Series consists of (3) models to cover ranges from full vacuum to 75,000 psi.  All PG piston gauge bases include automated monitoring of environmental and instrument operating conditions such as relative humidity, barometric pressure, ambient temperature, piston-cylinder temperature and reference vacuum (for absolute models only).

The goal of the PG design is to improve accuracy and reduce the influence of the operator on pressure measurements to achieve more consistent results.  A simple "Go/No Go" signal tell the operator that conditions are present for good pressure measurements.

The PG Series consists of (3) Models:

PG7601:  Gas deadweight tester with bell jar, up to 1000 psia/psig
PG7102:  Gas deadweight tester, up to 1600 psi
PG7102   Gas OR Oil deadweight tester, up to 30,000 psi (liquid lubricated piston)
PG7302:  Oil deadweight tester for pressures to 75,000 psi

	Accuracy to +/-0.002% of reading, NIST traceable
	Pressures from vacuum to 75,000 psi
	Absolute, gauge and differential models available
	On-board test report generation with simple template editing
	Creates standard data files for easy export

PG7000 Data Sheet in PDF format

PG7202 Data Sheet in PDF format

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AMH Automated Mass Handling for PG7000 Piston Gauges from DH Instruments

The AMH is an optional accessory for the PG7000 piston gauges detailed directly above. With the AMH system, which can be retrofit onto existing PG7000 installations or ordered on new systems, tedious manual mass handling is eliminated.  And with the addition of one of DH Instruments PPC automatic pressure controllers, piston gauge calibrations can be FULLY AUTOMATED with accuracies down to 0.002% of reading.  This system is ideal for pressure sensor manufacturers who are required to use primary standards for final calibration of their products. 

BREAKTHROUGH: Not only can gauge (psig) pressures be automated but for the first time ABSOLUTE (psia) pressure calibrations can be fully-automated on a piston gauge without breaking the bell jar for each increment.  The AMH system operates entirely in vacuum.

No more mis-loading of masses.  Wear on mass sets is reduced significantly.

	Optional accessory for PG7000 Series piston gauges
	Two models for low or high pressure
	Allows full automation of gauge (psig) or absolute (psia) pressures with PPC controllers.
	Can be retrofit to existing PG systems

PG7000-AMH Data Sheet in PDF format

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FPG8601 Force Balanced Piston Gauge from DH Instruments

The FPG8601 addresses the need for traceable measurements with very low uncertainty in the range below standard piston gauges and deadweights testers.  The FPG8601 is designed for calibration of Capacitance Diaphragm Gauges (CDGs) such as the MKS Barotron and Edwards/Datametrics Barocell (in both differential, gauge AND absolute modes) as well as the critical low inches-of-water ranges that are not covered well by traditional primary pressure standards.  Included with the system is an automated pressure control device that can be used for automatically running multi-point test sequences on any test device with an analog, RS232 or IEEE output.

	Uncertainty of +/-0.003% of reading + 5 mPa
	Range of 0 to 15 kPa (2.2 psi, 112 torr, 60" H20)
	Calibrates ranges down to 100 mtorr, 0.1" H20
	Supports absolute, gauge and differential calibrations
	System includes full automation software
	System includes automated pressure controller

Data Sheet in PDF format  

TECHNICAL PAPERS (PDF Format):

1. "A Forced Balance Piston Gauge for Very Low Gauge and Absolute Pressures"  Authors: Pierre Delajoud, Martin Girard

2. "Application of a New Method for the Automated Calibration of Very Low Gauge and Absolute Pressures in a Commercial Calibration Laboratory"  Authors: Michael Bair, Robert Haines