P3000 Pneumatic Deadweight Testers

The P3000 Series is the culmination of over 50 years of experience in the production and design of high performance pressure standards.

 

  • Pressure ranges from vacuum through 2 000 psi (140 bar)
  • Accuracy better than .015 % of reading. (Increased accuracy option of 0.008 %)
  • Gas operated with optional hand pumps
  • Dual vacuum/pressure models available
  • Psi, bar, kgf/cm2, kPa and MPa ranges available
  • Piston/cylinder design provides stability and repeatability
  • Built-in pneumatic hand pumps for pressure and vacuum
  • Piston flotation indicator
  • High quality needle valves provide optimum control
  • Mounted spirit level and adjustable feet
  • Test station design with O-rings eliminates the need for PTFE tape or wrenches
  • Improved case with springloaded latches for hood
  • Sturdy weight box with hinged lid and side handles for easy transport
The P3000 Series is the culmination of over 50 years of experience in the production and design of high performance pressure standards. With features designed to improve accuracy and performance, increase reliability and simplify operation these deadweight testers can be used to calibrate virtually any pressure sensing device, including transducers, transmitters, gauges or pressure switches. Each instrument is supplied with a detachable lid that makes it neat, compact and easily portable. The weight masses are stored in a high-quality case with a self-locking mechanism to protect them during transit. All units are provided with a traceable certificate of accuracy, weight mass details, 1/8 inch, 1/4 inch, 3/8 inch and 1/2 inch NPT or BSP female adaptors, operating fluid (where applicable) and spare seals. The piston/cylinder assemblies are manufactured to the very highest standards with certified accuracies trace-able to international standards laboratories such as the National Institute of Standards and Technology (NIST).

P3000 Series Vacuum and Dual Vacuum/Pressure Models

The combined vacuum/pressure models are extremely versatile instruments providing vacuum through 500 psi (35 bar) capacity in one unit. For added expansion, an additional low range piston/weight set can be provided for pressures to 800 inH2O (2 000 mbar). An optional built-in hand pump can be installed to generate vacuum (90%) through 300 psi.

P3000 Series Liquid Lubricated Gas Operated Models

The Models P3031 and P3032 feature an oil lubricated piston/cylinder assembly, which ensures that the instrument is less susceptible to performance issues caused by contamination of the gas supply or the environment in which the unit is being operated.
The supply gas, via the deadweight tester controls, is introduced into the piston/cylinder chamber. As the gas acts directly on the surface of the oil, there is a rate-less transfer of pressure within the system.
The instrument is designed to prevent inadvertent over-filling of the chamber, thus avoiding contamination of the gas system. There is no physical barrier between the gas and oil so there is some “oil-mist” transfer potential. Therefore, we do not recommend the standard version for oxygen service. A special version of these instruments using an oxygen compatible fluid is available.

Operating principle

Deadweight testers are the high performance pressure standards for pressure measurements. Utilizing the well proven piston-gauge system consisting of a vertically mounted, precision lapped piston and cylinder assembly, accurately calibrated weight masses (Force) are loaded on the piston (Area), which rises freely within its cylinder. These weights balance the upward force created by the pressure within the system. The pressure is measured when placed on a correctly spinning and floating piston. The total pressure measured is the summation of the weights plus the piston weight carrier assembly.

Instrument base

There are four basic variations in the pneumatic offering; single pressure, single vacuum, dual vacuum and pressure, and oil-lubricated pneumatically driven high-pressure models. Pressure or vacuum is generated by an external source or an optional built-in hand pump. The hand pump option is not available on instruments above 500 psi (35 bar).

Piston/cylinder assemblies

The piston/cylinder assembly is the heart of each deadweight tester. They are manufactured from materials that provide stability, durability, and low thermal coefficients and distortion. Our experience and knowledge of piston/cylinder production and calibration ensure the precision and performance required for today’s demanding calibration requirements.

Weight masses

Standard weight masses are series 3 nonmagnetic austenitic stainless steel. Each mass is marked with the serial number of the instrument  and the nominal pressure value relative to the high- or low-pressure piston, when applicable. Vacuum weights and the optional fractional weights are stainless steel and/or solution heat treated aluminum.

Gravity correction

Gravity varies significantly with geographical location and this variation has a direct effect on the force of the weights and the accuracy of the deadweight tester. Each instrument can be calibrated to local gravity at no extra cost. If unspecified, instruments will be calibrated to Standard Gravity at 980.665 cm/s2.

Gas supply

All instruments are fitted with a ⁄ NPT female external supply port for connection to the gas supply source. A compressed gas bottle (nitrogen or dry air) fitted with a pressure regulator is recommended. Ten percent above the maximum pressure is required. A built-in hand pump is available on some models to generate pressures to 300 psi (20 bar). For vacuum requirements, an external vacuum pump can be connected to the ⁄ NPT port. The built-in hand pump will also generate up to 90 % vacuum.

 

 

 

Accuracy

Accuracy* ±0.015% of reading (±0.008% optional) *Accuracy based on % of reading from 10% to 100% of the piston range when used in accordance with the corrections found on the calibration certificate. Below 10% ± (accuracy class) x 10% of the piston range.

Mass and PCU Materials of Construction

Standard weight material Series 3 non-magnetic austenitic stainless steel
Weight density 7.8 g/cm³
Optional fractional weights Solution heat treated aluminum
Weight density 2.7 g/cm³
Models P3011, P3012, P3013, P3022, P3023, P3025 (V) Piston Material:                   Ceramic Cylinder Material:                Martensitic steel Coefficient of Expansion:     11 ppm/°C
Models P3014, P3015, P3025 (P) P3031, P3032 (P & V) Piston Material:                   Tungsten carbide Cylinder Material:                Martensitic steel Coefficient of Expansion:     16.5 ppm/°C
Model P3016 Piston Material:                  Tungsten carbide Cylinder Material:               Tungsten carbide Coefficient of Expansion:     11 ppm/°C

General

Test port adaptors 1/8, 1/4, 3/8 and ½ NPT or BSP
Instrument weight 24 lbs
Instrument size 17.5 W x 12 D x 8.5 H
Mass set weight (typical) 65 lbs

Minimum Standard Weight Increments

P3012, P3022 Pressure 1 inH2O, (5 mbar)
P3013, P3023 Pressure 2 inH2O, (10 mbar)
P3014, P3015, P3025 Pressure 1 psi, (0.1bar)
P3016, P3031, P3032 1 psi, (0.1bar)
P3011, P3022, P3023, P3025 Vacuum 0.2 inHg (10 mbar)

Optional Fractional Weights

P3014, P3015, P3025 Pressure 0.1 psi (0.01 bar)

Built-in Hand Pumps

Pressure mode Max pressure 300 psi (20 bar)
Vacuum mode To 90% vacuum

Operating Fluid for Liquid Lubricated Models

55-655 mineral oil (standard)
Krytox for oxygen-safe applications (optional)

Options

PressCal Software Windows-based software program that allows users to easily apply all necessary corrections to enhance the deadweight tester performance. Calibration details are then stored and/or used to automatically create a calibration certificate. PressCal is provided as standard with all 0.008% instruments.
Krytox As operating fluid for liquid lubricated gas operated models.
 

 

Model Name

Description

P3012-KPA-P P3000 Series Single Pressure Model Air Operated – Single PCU Pressure Range 1.5 to 100 kPa
P3012-MBAR-P P3000 Series Single Pressure Model Air Operated – Single PCU Pressure Range 15 to 1,000 mbar
P3012-INH20-P P3000 Series Single Pressure Model Air Operated – Single PCU Pressure Range 400 inH20
P3013-KPA-P P3000 Series Single Pressure Model Air Operated – Single PCU Pressure Range 3 to 200 kPa
P3013-MBAR-P P3000 Series Single Pressure Model Air Operated – Single PCU Pressure Range 30 to 2,000 mbar
P3013-INH20-P P3000 Series Single Pressure Model Air Operated – Single PCU Pressure Range 12 to 800 inH2O
P3014-BAR-P P3000 Series Single Pressure Model Air Operated – Single PCU Pressure Range 0.2 to 10 bar
P3014-KGCM2-P P3000 Series Single Pressure Model Air Operated – Single PCU Pressure Range 0.2 to 10 kgf/cm²
P3014-PSI-P P3000 Series Single Pressure Model Air Operated – Single PCU Pressure Range 3 to 150 psi
P3014-KPA-P P3000 Series Single Pressure Model Air Operated – Single PCU Pressure Range 20 to 1,000 kPa
P3014-MPA-P P3000 Series Single Pressure Model Air Operated – Single PCU Pressure Range 0.02 to 1 MPa
P3015-BAR-P* P3000 Series Single Pressure Model Air Operated – Single PCU Pressure Range 0.2 to 35 bar* -P indicates built-in pump optional.
P3015-KGCM2-P* P3000 Series Single Pressure Model Air Operated – Single PCU Pressure Range 0.2 to 35 kgf/cm²* -P indicates built-in pump optional.
P3015-PSI-P* P3000 Series Single Pressure Model Air Operated – Single PCU Pressure Range 3 to 500 psi* -P indicates built-in pump optional.
P3015-KPA-P* P3000 Series Single Pressure Model Air Operated – Single PCU Pressure Range 20 to 3,500 kPa* -P indicates built-in pump optional.
P3015-MPA-P* P3000 Series Single Pressure Model Air Operated – Single PCU Pressure Range 0.02 to 3.5 MPa* -P indicates built-in pump optional.
P3011-KPA-P* P3000 Series Vacuum and Dual Vacuum/Pressure Model Vacuum Operated – Single PCU Vacuum Range 3 to 100 kPa* -P indicates built-in pump optional.
P3011-MBAR-P* P3000 Series Vacuum and Dual Vacuum/Pressure Model Vacuum Operated – Single PCU Vacuum Range 30 to 1,000 mbar* -P indicates built-in pump optional.
P3011-INHG-P* P3000 Series Vacuum and Dual Vacuum/Pressure Model Vacuum Operated – Single PCU Vacuum Range 1 to 30 inHg* -P indicates built-in pump optional.
P3011-MMHG-P* P3000 Series Vacuum and Dual Vacuum/Pressure Model Vacuum Operated – Single PCU Vacuum Range 30 to 760 mmHg* -P indicates built-in pump optional.
P3022-KPA-P* P3000 Series Vacuum and Dual Vacuum/Pressure Model Air Operated - Dual PCU Pressure Range 1.5 to 100 kPa Vacuum Range 3 to 100 kPa* -P indicates built-in pump optional.
P3022-MBAR-P* P3000 Series Vacuum and Dual Vacuum/Pressure Model Air Operated - Dual PCU Pressure Range 15 to 1,000 mbar Vacuum Range 30 to 1,000 mbar* -P indicates built-in pump optional.
P3022-INH20-P* P3000 Series Vacuum and Dual Vacuum/Pressure Model Air Operated - Dual PCU Pressure Range 5 to 400 inH2O Vacuum Range 1 to 30 inHg* -P indicates built-in pump optional.
P3023-4-KPA* P3000 Series Vacuum and Dual Vacuum/Pressure Model Air Operated - Dual PCU Pressure Range 3 to 200 kPa Vacuum Range 3 to 100 kPa* -P indicates built-in pump optional.
P3023-MBAR-P* P3000 Series Vacuum and Dual Vacuum/Pressure Model Air Operated - Dual PCU Pressure Range 30 to 2,000 mbar Vacuum Range 30 to 1,000 mbar* -P indicates built-in pump optional.
P3023-INH20-P* P3000 Series Vacuum and Dual Vacuum/Pressure Model Air Operated - Dual PCU Pressure Range 12 to 800 inH2O Vacuum Range 1 to 30 inHg* -P indicates built-in pump optional.
P3025-BAR-P* P3000 Series Vacuum and Dual Vacuum/Pressure Model Air Operated - Dual PCU Pressure Range 0.2 to 35 bar Vacuum Range 30 to 1,000 mbar* -P indicates built-in pump optional.
P3025-KGCM2-P* P3000 Series Vacuum and Dual Vacuum/Pressure Model Air Operated - Dual PCU Pressure Range 0.2 to 35 kgf/cm² Vacuum Range 30 to 760 mmHg* -P indicates built-in pump optional.
P3025-PSI-P* P3000 Series Vacuum and Dual Vacuum/Pressure Model Air Operated - Dual PCU Pressure Range 0.2 to 35 kgf/cm² Vacuum Range 30 to 760 mmHg* -P indicates built-in pump optional.
P3025-KPA-P* P3000 Series Vacuum and Dual Vacuum/Pressure Model Air Operated - Dual PCU Pressure Range 20 to 3,500 kPa Vacuum Range 3 to 100 kPa* -P indicates built-in pump optional.
P3025-MPA-P* P3000 Series Vacuum and Dual Vacuum/Pressure Model Air Operated - Dual PCU Pressure Range 0.02 to 3.5 MPa Vacuum Range 3 to 100 kPa* -P indicates built-in pump optional.
P3031-BAR P3000 Series Liquid Lubricated Gas Operated Model Pressure Range 1 to 70 bar
P3031-KGCM2 P3000 Series Liquid Lubricated Gas Operated Model Pressure Range 1 to 70 kgf/cm
P3031-PSI P3000 Series Liquid Lubricated Gas Operated Model Pressure Range 10 to 1,000 psi
P3031-KPA P3000 Series Liquid Lubricated Gas Operated Model Pressure Range 100 to 7,000 kPa
P3031-MPA P3000 Series Liquid Lubricated Gas Operated Model Pressure Range 0.1 to 7 MPa
P3032-BAR P3000 Series Liquid Lubricated Gas Operated Model Pressure Range 4 to 140 bar
P3032-KGCM2 P3000 Series Liquid Lubricated Gas Operated Model Pressure Range 4 to 140 kgf/cm
P3032-PSI P3000 Series Liquid Lubricated Gas Operated Model Pressure Range 40 to 2,000 psi
P3032-KPA P3000 Series Liquid Lubricated Gas Operated Model Pressure Range 400 to 14,000 kPa
P3032-MPA P3000 Series Liquid Lubricated Gas Operated Model Pressure Range 0.4 to 14 MPa

Accessories common to all models:

Accessory

Description

5540 Metric and 5541 BSP Adapter Sets P5540 Metric M14 x 1.5, M20 x 1.5, 1/8 and 1/4 BSPP5541 BSP 1/8, 1/4, 3/8 and 1/2 BSPP5542 NPT 1/8, 1/4, 3/8 and 1/2 NPT
P5531 Dirt/Moisture Trap Pressure range 0 to 500 psi (35 bar) Dirt/moisture traps provide an effective barrier against the transfer of moisture and dirt from an instrument under test to the sensitive piston/cylinder assembly of a pneumatic deadweight tester. Unexpected particle contamination or fluid inside the device under test will be prevented from entering the deadweight system, avoiding downtime for maintenance or repair. Designed for operation in the vertical position these traps are simple to dismantle and easy to clean. Designed to mount directly on the deadweight tester and featuring an acrylic chamber for visibility of contaminates this unit utilizes the standard test port adapters for easy instrument connections.
P5532 Dirt/Moisture Trap Pressure range 0 to 3,000 psi (210 bar) Dirt/moisture traps provide an effective barrier against the transfer of moisture and dirt from an instrument under test to the sensitive piston/cylinder assembly of a pneumatic deadweight tester. Unexpected particle contamination or fluid inside the device under test will be prevented from entering the deadweight system, avoiding downtime for maintenance or repair. Designed for operation in the vertical position these traps are simple to dismantle and easy to clean.This high pressure version is provided with an aluminum central chamber for safety and utilizes the standard test port adapters.
P5543 Angle Adapter To calibrate gauges with the pressure connection on the rear (for example, panel mount gauges) in their correct operating position, an angle adaptor should be used. The angle adapter uses the standard gauge adapters and positions the gauges at 90º. The maximum working pressure of this unit is 10,000 psi (700 bar).
P5544 Two Gauge Stand This adapter mounts directly to the test port of the calibrator and allows for the calibration of two instruments at the same time, or the connection of a reference test instrument. Maximum working pressure is 10,000 psi (700 bar).
P5551 Pointer Remover/Punch This tool is designed to quickly remove and consistently refit the pointer of a pressure gauge.
 

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