Fluke P3840 High-Pressure Oil Hydraulic Deadweight Tester

The Fluke P3840 High-Pressure Oil Hydraulic Deadweight Tester is a reliable, accurate, cost-effective and easy-to-use solution to calibrating high-pressure sensing instruments such as transducers, transmitters, gauges and pressure switches, as well as other pressure calibrators.

The Fluke P3840 High-Pressure Oil Hydraulic Deadweight Tester is available in three variations with different pressure ranges and measurement units. For further information, please see the table below.

This instrument has been optimised for accuracy and as such can be purchased with EITHER a 0.02% OR 0.015% accuracy. Other OPTIONAL alterations include calibrating the tester and trimming the supplied weight masses to the user’s local gravity. These changes account for the effect of the localised gravitational pull on the weight masses, thereby improving the accuracy of the deadweight tester. PLEASE NOTE that, unless specified, the Fluke P3840 High-Pressure Oil Hydraulic Deadweight Tester and weight masses will be calibrated/ trimmed in accordance with standard gravity (980.665cm/s²).

Weight masses are marked with the instrument’s serial number and nominal pressure values relative to the high-pressure piston.They are made from series 3, non-magnetic stainless steel, ensuring that they are unaffected by the earth’s magnetic field, again working to improve the accuracy of the Fluke P3840 High-Pressure Oil Hydraulic Deadweight Tester.

Moreover, the piston and cylinder assembly to which these weight masses are added, in order to balance the upward force created by the generation of hydraulic pressure (more information below), is constructed from tungsten carbide. This means that the assembly is able to provide long-term stability and durability, as well as low coefficients for temperature and pressure, again improving the precision of this instrument. Indeed the Fluke P3840 High-Pressure Oil Hydraulic Deadweight Tester is supplied with an ISO/IEC 17025 Accredited Calibration Certificate.

Hydraulic pressure is created using Dicotyl Sebacate (DOS) as a medium. When calibrating large volume instruments the oil reservoir can be re-filled to accommodate this requirement. The integrated high-quality hand-pump is connected to a 7-to-1 intensifier and facilitates the quick creation of hydraulic pressure within the system. As pressure is created the piston rises in its cylinder. As mentioned above, to balance this upward force accurately calibrated weight masses are added to the piston. When the piston is in the ideal ‘mid-floatation’ position, as indicated by the floatation indicator, the final pressure value can be determined by adding the nominal pressure values marked on each of the weight masses to the weight of the assembly.

In addition to the Fluke P3840 High-Pressure Oil Hydraulic Deadweight Tester’s accuracy and simplicity-of-operation, it is also easy to assemble. Its test station design allows instruments-under-investigation to be connected quickly, whilst its level vial and adjustable feet ensure that it is always set up accurately.

The Fluke P3840 High-Pressure Oil Hydraulic Deadweight Tester provides an accurate, reliable, efficient and cost-effective solution to calibrating high-pressure sensing instruments. 

 Fluke P3840 High-Pressure Oil Hydraulic Deadweight Tester Key Features

• Reliable, accurate, cost-effective, easy-to-use solution to calibrating high-pressure sensing instruments
• Suitable for calibrating transducers, transmitters, gauges, pressure switches and other pressure calibrators
• Available in three models with varying pressure ranges and measurement units
• Purchase with EITHER a 0.02% OR 0.015% accuracy
• OPTION to calibrate the tester to local gravity
• OPTION to trim the weight masses in accordance with the local gravity
• As STANDARD  the tester and weight masses are calibrated/ trimmed to standard gravity (980.665cm/s²)
• Weight masses are marked with the instrument’s serial number and nominal pressure values relative to the high-pressure piston
• Weight masses are constructed from series 3, non-magnetic stainless steel
• Piston and cylinder assembly is constructed from tungsten carbide ensuring stability, durability and providing low coefficients for temperature and pressure
• Supplied with an ISO/ IEC 17025 Accredited Calibration Certificate
• Hydraulic pressure is created using Dicotyl Sebacate (DOS) as a medium
• Oil reservoir can be refuelled in order to accommodate instruments with large volumes
• The high-quality hand-pump is connected to a 7-to-1 intensifier
• Hand-pump and intensifier can be used to create high hydraulic pressures
• Hydraulic pressure causes the piston to rise in its cylinder
• Weight masses are added to balance this upward force
• Piston and cylinder assembly includes a floatation indicator
• The final pressure is measured by combining the nominal values marked on the weight masses (on the piston) with the weight of the assembly
• Test-station design
• Level vial
• Adjustable feet
• Accurate, reliable, efficient and cost-effective high-pressure calibrator

What’s Included?

• Your Choice of Fluke P3840 High-Pressure Hydraulic Deadweight Tester
• Weight Masses
• ISO/ IEC 17025 Accredited Calibration Certificate
• Operating Fluid
• High-Pressure Adapters