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RDP Electronics has launched the IP65-rated S7 series of transducer signal amplifiers designed for wet environments.

With low output voltage from a transducer it is frequently essential to provide signal amplification close by to ensure good noise immunity.

The S7 amplifier series is supplied in rugged die-cast aluminium housings with cable glands and seals rated to IP65, meeting the environmental protection needs of applications in wet environments and providing effective electrical screening.

RDP’s S7 amplifiers contain all the necessary circuitry for transducer excitation, zero and scale adjustment and amplification with a choice of voltage and current outputs.

Designed for use with RDP’s range of LVDT and half-bridge displacement sensors, the S7AC DC-powered version for example is easy to set up and calibrate, having a gain of 500 in eight steps, with fine control and a bandwidth of 500Hz.

Also incorporated is an ‘over-range’ indicator, which warns if the demodulator input exceeds the linear range.

The output can be configured for bipolar or unipolar operation having a maximum of +/- 10V or 4-20mA, using a choice of DC or 230/115V AC power supply voltages.

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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