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Fluke P3113-XXX Oil Hydraulic Deadweight Tester

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Fluke P3113-XXX
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The Fluke P3113-XXX Oil Hydraulic Deadweight Tester is designed to calibrate pressure sensing instruments via the creation of hydraulic pressure and the addition of accurately calibrated weight masses. It is suitable for checking pressure transducers, transmitters, gauges and pressure switches. For a quick introduction to this product, please see the video below.

The Fluke P3113-XXX Oil Hydraulic Deadweight Tester is available in four models which vary in regards to their pressure ranges and measurement units, for further information please see the following table.

Product Code Product Name  Pressure Range
P3113-BAR Fluke P3113-BAR Oil Hydraulic Deadweight Tester - 350 bar 10 to 350 bar
P3113-KGCM2 Fluke P3113-KGCM2 Oil Hydraulic Deadweight Tester - 350 kgf/cm2 10 to 350 kgf/cm
P3113-PSI Fluke P3113-PSI Oil Hydraulic Deadweight Tester - 5000 psi 100 to 5000 psi
P3113-MPA Fluke P3113-MPA Oil Hydraulic Deadweight Tester - 35 MPa 1 to 35 MPa

This instrument operates by using mineral oil to create hydraulic pressure. Its high-quality screw-press facilitates this creation and allows the user to make fine pressure adjustments; the integrated hand-pump may be used to accommodate large volume requirements and prime the system. Throughout the creation of hydraulic pressure the user is able to view the level and quality of the oil via the clear, acrylic reservoir; furthermore, once the calibration has been performed the built-in drain plug allows the user to remove the mineral oil quickly and easily.

As pressure is created the piston is forced upwards in its cylinder. To balance this upward force, accurately calibrated weight masses constructed from series 3, non-magnetic, austenitic, stainless steel, are added to the piston. Each of these weight masses is marked with the instrument’s serial number and the nominal pressure values relative to high- or low-pressure pistons. Therefore in order to determine the final pressure, the relevant nominal values marked on the weight masses added to the piston are combined. Please see the video below for more information regarding this process.

The Fluke P3113-XXX Oil Hydraulic Deadweight Tester has been optimised for precision and as such is supplied with a traceable certificate of accuracy. It also includes a piston and cylinder assembly that has been constructed in accordance with the highest standards, ensuring that it has certified accuracies traceable to international standard laboratories, such as NIST (National Institute of Standards and Technology). The design of this piston and cylinder assembly with floatation indicator works to reduce the effects of thermal coefficients and distortion whilst maintaining stability and durability.

This product has a standard accuracy of 0.015% and is calibrated to standard gravity (980.665cm/s²). This accuracy may be improved to 0.008% via altering the set-up of the Fluke P3113-XXX Oil Hydraulic Deadweight Tester, for instance by calibrating the tester to the user’s local gravity. In doing this, the effect of the local gravitational pull on the weight masses is accounted for, thereby improving the instrument’s accuracy.

The Fluke P3113-XXX Oil Hydraulic Deadweight Tester is not only optimised for precision but has also been designed for ease-of-use. It includes a test-station design with O-rings and is supplied with 1/8 inch, 1/4 inch, 3/8 inch and 1/2 inch NPT or BSP female adaptors. These features remove the need for PTFE tape and/or wrenches when attaching additional instruments. Also adding to this tester’s practicality is its adjustable feet and mounted spirit level, these features ensure that the tester may be set-up accurately on a variety of work surfaces.

Finally, both the Fluke P3113-XXX Oil Hydraulic Deadweight Tester and weight masses can be safely and securely transported between worksites due to the inclusion of a removable lid and robust weight box with a self-locking mechanism.

The Fluke P3113-XXX Oil Hydraulic Deadweight Tester is an adaptable, accurate and easy-to-use pressure calibrator.

Fluke P3113-XXX Oil Hydraulic Deadweight Tester Key Features

  • Calibrate pressure sensing instruments via the creation of hydraulic pressure and addition of accurately calibrated weight masses
  • Ideal for calibrating transducers, transmitters, gauges and pressure switches
  • Available in four models with differing pressure ranges and measurement units
  • Operates using mineral oil
  • High-quality screw press facilitates pressure creation and fine pressure adjustments
  • Integrated hand-pump can be used to prime the system and accommodate large volume requirements
  • Clear, acrylic reservoir
  • Built-in drain plug
  • Piston rises in the cylinder with the creation of pressure
  • Weight masses are constructed from series 3, non-magnetic, austenitic, stainless steel
  • Weight masses are added to the piston to balance the upward force
  • Weight masses are marked with the instrument’s serial number and the nominal pressure values relative to the high- or low-pressure piston
  • The final pressure value is determined by adding the relevant nominal values on the weight masses on the piston
  • Supplied with a traceable certificate of accuracy
  • Includes a piston and cylinder assembly with floatation indicator
  • Piston and cylinder assembly has been constructed in accordance with the highest standards
  • Piston and cylinder assembly includes certified accuracies traceable to international standards laboratories, such as NIST
  • Piston and cylinder assembly reduces the effects of thermal coefficients and distortion whilst maintaining stability and durability
  • Standard accuracy of 0.015%
  • Calibrated to standard gravity (980.665cm/s²)
  • Can be calibrated to local gravity
  • Accuracy may be improved to 0.008%
  • Test-station design with O-rings
  • Supplied with 1/8 inch, 1/4 inch, 3/8 inch and 1/2 inch NPT or BSP female adaptors
  • No need for PTFE tape or wrenches when attaching additional instruments
  • Adjustable feet
  • Mounted spirit level
  • Removable lid
  • Robust weight case with a secure locking mechanism for weight masses
  • Adaptable, accurate, easy-to-use pressure calibrator

What’s Included?

  • Your Choice of Fluke P3113-XXX Oil Hydraulic Deadweight Tester
  • Traceable Certificate of Accuracy
  • Weight Masses
  • Removable Lid
  • 1/8 inch, 1/4 inch, 3/8 inch and 1/2 inch NPT or BSP female adaptors
  • Spare Seals
  • Operating Fluid (where applicable)

Fluke P3113-XXX Oil Hydraulic Deadweight Tester Technical Specifications

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.
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
Piston material Tungsten carbide with nickel binder
Density- 15.0 g/cm³
Cylinder material Hardened martensitic steel
Tungsten carbide 
Thermal coefficients of expansion Oil piston/cylinder 16.5 ppm/°C
General Specifications 
Test port adaptors 1/8, 1/4, 3/8 and ½ NPT or BSP
Instrument weight 36 lbs (16 kg)
Instrument size 17.5 W x 12 D x 8.5 H
Mass set weight (typical) 80 lbs (36 kg)
Reservoir volume 150 cc
Screw press displacement 5.5 cc
Pump displacement 4.7 cc per stroke
O-ring seal materials Buna N as standard, Viton and EPDM available
Weight Increments
Minimum Standard Weight Increments Up to 500 psi (35 bar): 1 psi (0.1 bar)
500 to 5000 psi (35 to 350 bar): 10 psi (1 bar)
5000 to 20,000 psi (350 to 1400 bar): 20 psi (2 bar)
Model P3112: 1 psi (0.1 bar)
Optional Fractional Weights Up to 500 psi (35 bar): 0.1 psi (0.01 bar)
500 to 5000 psi (35 to 350 bar): 1 psi (0.1 bar)
5000 to 20,000 psi (350 to 1400 bar): 2 psi (0.2 bar)
Operating Fluid
Mineral oil Shell spindle oil 22, our reference 55-655, viscosity 40 cs@ 20°C
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Additional Information
SKU Fluke P3113-XXX
Manufacturer Part Code 4184992

Made to Order item: This item is made-to-order with a lead time once the order is placed. Once an order is placed it cannot be cancelled or returned unless the unit is found to be faulty.

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