Fluke Calibration P3000 Series:
P3031 and P3032 Liquid Lubricated Pneumatic Deadweight Testers

  • Pressure ranges from vacuum through 2000 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
Fluke Calibration 6241Click for larger image
Fluke Calibration P3000 Series Shown
Product Information
Datasheet 6322702 PDF
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The Fluke Calibration P3000 Series is the culmination of over 50 years experience in the production and design of primary 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 Fluke Calibration P3000 Pneumatic Deadweight Testers is supplied with a detachable lid that makes it neat, compact and easily portable. The masses are stored in a high-quality case with a self-locking mechanism to protect them during transit. All units are provided with an accredited calibration certificate, M14X1.5, M20X1.5, 1/8, 1/4, 3/8, and 1/2 NPT and BSP female adaptors, operating fluid (where applicable) and spare seals. The piston/cylinder assemblies are manufactured to the very highest standards and are supplied with accredited calibration reports with stated instrumental measurement uncertainties.

P3000 Series Liquid Lubricated Gas Operated Models
The Fluke Calibration 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 Fluke Calibration P3031 and P3032 is designed to prevent inadvertent over-ἀlling 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 a hydro-carbon free fluid is available.

Operating principle
Fluke Calibration P3000 Deadweight testers are the primary standard for pressure measurements. Utilizing the well proven piston-gauge system consisting of a vertically mounted, precision lapped piston and cylinder assembly, accurately calibrated masses (Force) are loaded on the piston (Area), which rises freely within its cylinder. These masses balance the upward force created by the pressure within the system.

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 (standard on the lower pressure models). The hand pump option is not available on instruments above 500 psi (3.5 MPa).

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.

Standard masses are series 3 non-magnetic 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. The masses for the vacuum ranges and the optional ἀne increment masses are stainless steel and/or 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 1/4 inch 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 (2 MPa).For vacuum requirements, an external vacuum pump can be connected to the 1/4 inch port. The built-in hand pump will also generate up to 90% vacuum.

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 certiἀcate.The use of PressCal allows for an improved accuracy of 0.008%.

Pressure ranges
Instrumental measurement uncertainty ±0.015% of reading (±0.008% optional)
Note: For more information on the uncertainty, including the % reading threshold, please see technical note, "Guide for the Uncertainty Analysis in Pressure When Using P3000 Series Dead-weight Testers"
Mass and PCU materials of construction
Standard weight material Series 3 non-magnetic austenitic stainless steel
Density: 7.8 g/cm3
Optional Fine increment masses Aluminum
Density: 2.7 g/cm3
Piston material Cylinder material Coefficient of expansion
P3014, P3015, P3025 (P), P3031, P3032 Tungsten carbide Martensitic steel 16.5 ppm/°C
General Specifications
Test port adaptors M14 X 1.5, M20 X 1.5, 1/8 in, 1/4 in, 3/8 in and 1/2 in NPT and BSP
Weight 11 kg (24 lb)
Dimensions (W x D x H) 440 mm x 300 mm x 215 mm (17.5 in x 12 in x 8.5 in)
Mass set weight (typical) 29 kg (65 lb)
Weight increments
Minimum standard weight increments
P3031, P3032 1 psi, (0.1bar, 10 kPa)
Built-in hand pumps
Pressure mode Max pressure 300 psi (2 MPa)
Vacuum mode To 90 % vacuum
Operating fluid for liquid lubricated models 55-655 mineral oil.
Ordering Information
Model Description Buy Online Price
MFR ID: 4184776 
Fluke Calibration P3031-BAR Gas Deadweight Tester, Liquid Lubricated, 70 Bar Buy Now $11,970.00
MFR ID: 4184783 
Fluke Calibration P3031-KGCM2 Gas Deadweight Tester, Liquid Lubricated, 70 Kgf/Cm2 Buy Now $11,970.00
MFR ID: 4184803 
Fluke Calibration P3031-KPA Gas Deadweight Tester, Liquid Lubricated, 7000 Kpa Buy Now $11,970.00
MFR ID: 4184815 
Fluke Calibration P3031-MPA Gas Deadweight Tester, Liquid Lubricated, 7 Mpa Buy Now $11,970.00
MFR ID: 4184790 
Fluke Calibration P3031-PSI Gas Deadweight Tester, Liquid Lubricated, 1000 Psi Buy Now $11,970.00
MFR ID: 4184826 
Fluke Calibration P3032-BAR Gas Deadweight Tester, Liquid Lubricated, 140 Bar Buy Now $11,970.00
MFR ID: 4184832 
Fluke Calibration P3032-KGCM2 Gas Deadweight Tester, Liquid Lubricated, 140 Kgf/Cm2 Buy Now $11,970.00
MFR ID: 4184859 
Fluke Calibration P3032-KPA Gas Deadweight Tester, Liquid Lubricated, 14K Kpa Buy Now $11,970.00
MFR ID: 4184867 
Fluke Calibration P3032-MPA Gas Deadweight Tester, Liquid Lubricated, 14 Mpa Buy Now $11,970.00
MFR ID: 4184844 
Fluke Calibration P3032-PSI Gas Deadweight Tester, Liquid Lubricated, 2000 Psi Buy Now $11,970.00
Optional Accessories
MFR ID: 3905893 
Fluke Calibration 55-655 St-55 Operating Fluid, 1 Qt for 6531, 6532, P5514, P5515 Or P31Xx Buy Now Sale $71.10
(Reg. $79.00)
MFR ID: 3891220 
Fluke Calibration P3030SK Seal Kit for the P3030 Series Buy Now Sale $130.50
(Reg. $145.00)
MFR ID: 4185759
Fluke Calibration P5532-20M Dirt/Moisture Trap, 20 Mpa (3000 Psi) for P5510, P5513, P30Xx Buy Now Sale $715.50
(Reg. $795.00)
MFR ID: 3875928
Fluke Calibration P5540 M14x1.5, M20x1.5, 1/8in, 1/4inBSP Adapter Set for Mainframe (not P38Xx) Buy Now Sale $117.00
(Reg. $130.00)
MFR ID: 3875937
Fluke Calibration P5541 Adapter Set, 1/8 in, 1/4 in, 3/8 in and 1/2inBSP for Mainframes Except P38Xx Buy Now Sale $117.00
(Reg. $130.00)
MFR ID: 3875943
Fluke Calibration P5542 Adapter Set, /8 in, 1/4 in, 3/8in and 1/2in NPT for Mainframes Except P38Xx Buy Now Sale $117.00
(Reg. $130.00)
MFR ID: 3875955
Fluke Calibration P5543 Angle Adapter Compatible With All Pressurements Mainframes Except P38Xx Buy Now Sale $261.00
(Reg. $290.00)
MFR ID: 4185767
Fluke Calibration P5544-STD Two Gauge Stand, Up To 70 Mpa (10K Psi )for all Pressurements Mainframes Buy Now $1,190.00
MFR ID: 3885659
Fluke Calibration P5551 Pointer Remover/Punch Buy Now Sale $265.50
(Reg. $295.00)
Conversion Weight Sets for the P3031
MFR ID: 4202099
Fluke Calibration CWS3031-BAR Conversion Weight Set for P3031 Bar Buy Now $3,570.00
MFR ID: 4202105
Fluke Calibration CWS3031-KGCM2 Conversion Weight Set for P3031 Kg/Cm2 Buy Now $3,570.00
MFR ID: 4202122
Fluke Calibration CWS3031-KPA Conversion Weight Set for P3031 Kpa Buy Now $3,570.00
MFR ID: 4202131
Fluke Calibration CWS3031-MPA Conversion Weight Set for P3031 Mpa Buy Now $3,570.00
MFR ID: 4202110
Fluke Calibration CWS3031-PSI Conversion Weight Set for P3031 Psi Buy Now $3,570.00
Conversion Weight Sets for the P3032
MFR ID: 4202146
Fluke Calibration CWS3032-BAR Conversion Weight Set for P3032 Bar Buy Now $3,580.00
MFR ID: 4202154
Fluke Calibration CWS3032-KGCM2 Conversion Weight Set for P3032 Kg/Cm2 Buy Now $3,580.00
MFR ID: 4202179
Fluke Calibration CWS3032-KPA Conversion Weight Set for P3032 Kpa Buy Now $3,580.00
MFR ID: 4202187
Fluke Calibration CWS3032-MPA Conversion Weight Set for P3032 Mpa Buy Now $3,580.00
MFR ID: 4202168
Fluke Calibration CWS3032-PSI Conversion Weight Set for P3032 Psi Buy Now $3,580.00