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Chartered engineer Stan Ceney, technical research and development manager at Clarkwood Engineering, has used loadcells and indicators from RDP Electronics to develop, test and demonstrate the capability of a tension control washer.

The tension-indicating washer — dubbed ‘Tencon’ — ensures joint tension control in fasteners, eliminating problems associated with sustained external forces, such as leakage and wear.

The Tencon device is currently on display at the Make it in Great Britain exhibition at London’s Science Museum. This event is scheduled to run until 9 September 2012.

Key benefits of product application

  • The tension-indicating washer developed using RDP products is hoped to overcome a number of problems and offer a cost-effective and simple means of monitoring bolt stress.
  • The Tencon washer is claimed to improve safety in critical structures and to prevent environmental catastrophic problems.

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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