Speed sensors

  • 19-Jun-2008 09:21 EDT
Honeywell SNDH_300Wx300H_hires.jpg


Honeywell’s SNDH Series quadrature general industrial speed and direction sensors improve vehicle service by separating the sensor and bearing in electric motor applications, allowing users to service the sensor without removing the bearing from the motor drive. Dual differential Hall-effect integrated circuit (IC) BiCmos technology improves the circuit’s accuracy, allowing the sensor to detect speed and direction of small, rotating target features with large air gaps up to 2 mm (0.08 in). The IC packaging technique allows the sensor-to-sensor 90° phase shift accuracy to be repeatable; tolerances are tight, reducing variation in the manufacturing process. Potential applications include industrial and heavy-duty vehicle applications requiring high resolution at wide frequency ranges with large air gaps such as transmissions, hydraulic motors, pumps and gear boxes; steering assembly direction of rotation; replacement for bearings with integrated sensors; and tachometers/counters and encoders.

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