Transducers enable accurate hydrodynamic analysis for composite bearings

A leading global manufacturer of high performance sealing solutions for specialist markets such as marine, hydro and tidal power is using high precision Hydrotechnik pressure transducers to accurately measure the hydrodynamic loads generated during the test / development of high speed water lubricated composite material bearings.

Used for submarine vessels and other demanding applications, composite materials such as polyester reduce bearing weight, friction, wear and cost whilst increasing operational life, in contrast to the traditional bronze / white metal type bearings.


Custom test rigs produce a high speed hydrodynamic fluid film effect on the bearing lubrication channels and monitor fluid pressure at various points to determine effectiveness and consistency of the channel design and configuration. The accuracy and reliability of pressure measurements are therefore critical in this high speed bearing development process.

Hydrotechnik HT-SHP high precision pressure transducers with a 0 to 10 bar operating range are installed at various sampling points to provide the optimum response and 0.15% measurement accuracy required, whilst providing a rugged solution that is insensitive to ambient shock and vibration. The 3 wire electrical interface provides a 0 to 10Vdc full scale output.

HT-SHP is a compact, rugged stainless steel transducer containing a thin film silicon on stainless steel diaphragm and advanced digital signal processing. The micro-machined technology uses a thin layer of silicon sputtered directly onto a stainless steel diaphragm to produce a single integrated measuring element with no fluid isolation. The rear electrical 4 pin M12 x 1 plug assembly is a fixed design with no internal zero / span potentiometers. An external magnetic fine zero adjustment is provided, if required for the application.

Measurement accuracy is 0.15% full scale as standard which includes all error sources at room temperature. This covers non-linearity, hysteresis, repeatability, zero and span offsets in accordance with IEC 61298-2. An optional 0.1% tolerance is available if required, equivalent to 0.05% BFSL.

The result is a highly rugged and reliable pressure sensor that is very suitable for low or high pressure hydraulics and widely proven in a variety of industrial and automotive research, test and production applications. 

Discover our full range of pressure transducers here suitable for a wide variety of applications.