Summary and Examples of Pressure Transducer

Pressure Transducer

Our pressure transducers electrically detect the gauge pressure of liquids like oil and water or gases like air. Our pressure transducers have sensing elements that use favorable-characteristic strain gauges made exclusively for transducers, and they can be used for consistent, highly reliable measurements over long periods of time. Our general-use PW model and high-pressure PWH model are used for static measurements free of sudden pressure fluctuations, while PWF, PWFC, PWFD and PWFE models are best suited for dynamic measurements with pressure fluctuations. They are widely used in applications such as production management as industrial devices. M8 hexagon bolt-shaped PWFD-PB and PWFA-PA, M6 hexagon bolt-shaped PWFE-PA, and water-submersible ultracompact pressure transducers PDA-PB/PDB-PB with a 7.6-mm diameter sensor are also available. We can also design and make pressure transducers suited to the customer’s application.


As pressure increases, the readout of a strainmeter moves to "plus" direction.

Examples of Pressure Transducer Use


Measuring hydraulic jack loads


Method used to calculate the conversion coefficient when measuring hydraulic jack load (kN or MN) with a pressure transducer

Correction coefficient (K) = C × A
K: Correction coefficient
C: Calibration coefficient for the transducer
A: Jack cylinder surface area exposed to pressure
F: Maximum jack load
P: Maximum jack pressure
Determine the correction coefficient when a pressure transducer is mounted on a jack with a maximum load of 3MN and a cylinder surface area exposed to pressure of 500 cm2.


Select a pressure transducer with a capacity higher than 60MPa because maximum jack pressure here is 60MPa. In this case, use the PWH-70MPA because it has a capacity of 70MPa.
If the calibration coefficient for the PWH-70MPA is
C= 0.035MPa/1 × 10-6 strain, then the correction
coefficient (K) is K = C × A = 0.035 × 106 × 5 × 10-2 / 1 × 10-6 = 1.75 × 103(N) / 1 × 10-6.
Converted to MN, we get the following: