New Hall-effect rotary position sensor suits extreme environments

Designed to provide long-life and high reliability in harsh and challenging environments, the recently BEI Sensors 9970 Series Hall-effect rotary position sensor is now available in the UK from Variohm EuroSensor. The 6mm shaft-driven sensor features a choice of 0 - 5V ratiometric or 4 - 20mA output with 2-bit resolution and electrical angle ranges from 30 degrees (+/- 15 degrees) up to 360 degrees (+/- 180 degrees) in 30 degree increments. Full endless rotation is included for maximum installation versatility. Accuracy is specified at +/- 0.6% of active electrical angle. Input voltage is 5V DC +/- 5% for ratiometric, or 9 - 30VDC for current output. With two-hole mounting on 50 mm centres and an integral Amp Superseal three-terminal connector, the compact sensor is a drop-in replacement for existing installations or a great choice for new steering angle and pedal position applications on construction and agricultural vehicles as well as positon feedback for mining, marine and industrial equipment or for valve positioning in process control. The sensor is housed in tough glass-filled PBT and includes IP67 and IP69K sealing. Non-contacting Hall-effect technology makes the 9970 particularly robust against shock and vibration; a life factor of more than 35 million cycles, high resilience to salts, oils and frequent wash-down, and an operating temperature range of -40C to 125C in addition to protection for over-voltage, reverse-polarity and short circuit provide 'fit-and-forget reliability', says the company.