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RDP Electronics offers several ranges of linear variable displacement transducer (LVDT) that can withstand the pressures involved in pressure test vessels.

They can also withstand submersion in water and oils – even combinations of pressure with high temperatures in some extreme cases.

Testing typically involves soil, rock and core samples and, according to the precise requirement, LVDTs from RDP’s D5, PY and LIN ranges can provide the appropriate solution.

Designed for use while submerged in fresh water, most corrosive liquids and gases, RDP’s D5 transducer series offers micron accuracy, can be sealed to withstand pressures up to 34 bar and is suited to soil testing.

Options include unguided and spring-operated versions, and a choice of end (axial) or side (radial) connections.

For component testing, the compact PY range is suitable for use where access or mounting space is limited, as it uses the variable reluctance principle to measure the distance of a metallic target over ranges of 1.5 to 6mm from the transducer’s body without any direct contact.

Finally, the LIN transducer is suitable for submersion and capable of working at temperatures up to 450C or pressures of 200 bar.

The standard LIN transducers are available for measurement ranges from +/-5 up to +/-25mm and, as well as withstanding extreme high and low temperatures, are also suitable for environments subject to exposure to radiation.

RDP Electronics – experts in measurement solutions

Measurement experts RDP Electronics Ltd have 45 years experience in developing transducers for a diverse range of applications in research, prototype testing, industrial plant and machinery, or embodied in products. Examples are numerous, spanning industries that include aerospace, automotive, structural engineering and power generation. The company is responsible for the development and manufacture of a comprehensive programmme of transducer products and associated electronics to recognised international standards for accurate and reliable measurement of displacement, load, pressure and torque. Often the best solutions have a simple elegance that is possible thanks in part to the quality and high reliability of the transducers they supply. Because of their knowledge and expertise RDP’s skilled engineering team is frequently invited to propose solutions to measurement challenges.

RDP Design, manufacture and market a wide range of LVDT and other displacement transducers. LVDT Displacement transducers accurately measure position and displacement. The strength of the LVDT is in its principle of operation. As LVDT sensors are inductive, there is no electrical connection across the sensing element ensuring clean data and a long life.

The LVDT operation principle lends itself to use in extreme environments. LVDTs can be made to work submerged in sea water, in temperatures of 600°C (1100°F) in high nuclear ratiation and at pressures of up to 2000bar (30,000psi).

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