P3000 Pneumatic Deadweight Testers |

Description
Highlights
Specifications
Models and Accessories
Knowledge and Information
Video

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.

Highlights

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 an ISO 17025 accredited calibration certificate, operating fluid (where applicable), spare seals, adaptors for 1/8, ¼, 3/8, ½ NPT and BSP, and metric adaptors (M20 and M14).

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).

Specifications

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.

Models and Accessories

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-KPA-P*	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 20 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 3 to 500 psi Vacuum Range 1 to 30 inHg* -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 1 to 140 bar
P3032-KGCM2	P3000 Series Liquid Lubricated Gas Operated Model Pressure Range 1 to 140 kgf/cm
P3032-PSI	P3000 Series Liquid Lubricated Gas Operated Model Pressure Range 10 to 2,000 psi
P3032-KPA	P3000 Series Liquid Lubricated Gas Operated Model Pressure Range 100 to 14,000 kPa
P3032-MPA	P3000 Series Liquid Lubricated Gas Operated Model Pressure Range 0.1 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.