Improved sealing for higher reliability included on new linear position sensors developed for displacement measurements in motor sports.
Variohm EuroSensor’s ELPM motorsports series linear position sensor is well-proven over several years for use in demanding applications that include ride height, suspension displacement and steering angle measurements.
Recent developments to the IP67 rated sensor, which is UK designed and manufactured by Variohm, includes an optional internal dual-lip seal arrangement that offers enhanced reliability and improved endurance. The option will suit all areas of motorsports as well as industrial applications where unpredictable wet and hostile environmental conditions may exist – where fit-and-forget dependability, reliability and high performance are imperatives.
The S option (ELPMS) is available across the full range of the sensor series, covering electrical stroke lengths from 12.5mm to 175mm (in 25mm increments) for both the standard self-aligning pivot bearing version and the ‘Pop’ version that includes snap-on mountings for rapid installation or removal. Furthermore, the improved sealing option does not increase the 9.5mm diameter cylindrical housing or the overall mounting length which is shorter and more compact than competitive linear sensor devices. The independent linearity across the range is +/-1% for the 12.5 to 50mm versions and +/- 0.5% for the 75 to 175mm versions. The ELPM has a temperature range of -30C to +150C continuous with a short term rating to 175C.
Rated at 25 million operations and with a maximum speed of 10 m/sec, the long life and high reliability of the ELPM and ELPMS series is the multi-fingered precious metal wiper system which maintains full and complete contact with the linear sensor’s conductive plastic resistance element – even under the most arduous physical and environmental conditions and with very low electrical noise. The 24 VDC supplied sensor has a recommended wiper current of only 10 µA for maximum efficiency in battery powered use and is supplied as standard with a 500mm free cable with a Viton seal.
The ELPM series is also available with a spring loaded shaft and protective covers – custom options for stroke length, mounting and electrical connection are available on request.