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Linear position sensor now with improved sealing option

13 September 2015

Variohm EuroSensor’s ELPM motorsports series linear position sensor now 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.

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.

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 percnt for the 12.5 to 50mm versions and +/- 0.5 percent for the 75 to 175mm versions. The ELPM has a temperature range of -30ºC to +150ºC continuous with a short term rating to 175ºC.

Rated at 25 million operations and with a maximum speed of 10m/sec, the ELPM and ELPMS series features a multi-fingered precious metal wiper system which maintains full and complete contact with the linear sensor’s conductive plastic resistance element with very low electrical noise.

The 24Vdc supplied sensor has a recommended wiper current of only 10µA for maximum efficiency in battery powered use and is supplied as standard with a 500mm free cable with a Viton seal.

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