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Machine Design

Noncontacting Position Sensor

The measurement angle of the RSC 2800 Series of noncontacting rotary sensors is determined by detecting variation in the orientation of a magnetic field from a magnet attached to the shaft.

Custom circuitry performs field-orientation detection and filtering while providing an analog output proportional to angular position. Features of the sensors include <±0.5% independent linearity; 30 to 360° electrical measurement angles; a lifespan of more than 50 million movements, repeatability of <0.03% of output signal range; and operation in –40 to 85°C. The sensors are not affected by static or dynamic shaft loads of up to 20 N in both radial and axial directions.

Novotechnik U.S. Inc., 155 Northboro Rd., Southborough, MA 01772, (508) 485-2244,

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