NRH300DP & NRH305DR - No-Contact, Rotary Position Sensor

Product Brand: Penny & Giles

The NRH300 product family is a range of no-contact, Rotary Position Sensors that offer the optimal combination of performance, safety and cost.


  • No-contact, Hall-effect technology
  • Wear free – unlimited mechanical life
  • Simple mounting, low-profile design
  • Measurement angle 20-360°
  • 5V or 9-30V supply options
  • Single or dual redundant outputs
  • Analog output – 0.5-4.5V or 0.2-4.8V
  • PWM output – 244 Hz, 500Hz or 1,000 Hz
  • Fail-safe outputs
  • Sealing to IP69K
  • Flying leads

The NRH300DP and NRH305DR utilise proven Hall-effect sensing technology in a low-profile (8mm) housing with separate magnet for true no-contact sensing.

The electrical output span can be set to correspond to rotations of 20° to 360°, and the positional information is determined by the angle of the supplied magnet relative to the sensor body. The maximum air gap between magnet and sensor is 8mm, while concentric offsets of up to 2mm can be tolerated with minimal impact on output linearity. The magnet can be supplied in a convenient carrier, housed in a bolt, as a plug or loose.

Innovative circuit design allows the NRH300DP to be powered from a regulated 5V supply or a varying voltage in the range of 9-30V, such as a vehicle’s battery. The NRH305DR supply is limited to a regulated 5Vdc supply only but includes connections for a second supply to separately power each of the two outputs, for additional redundancy and error checking.

Furthermore, both models contain on-board diagnostic functions that mean the outputs can be put into safe, pre-defined states should an internal sensor error be detected. The versatile, factory-programmable electronics can be easily set to one of two analog voltage output ranges or one of three PWM frequencies. In addition, the polarities of each of the analog outputs can be independently set.

The sealed design offers exceptional levels of performance with respect to water and dust, shock, vibration and temperature, meaning the sensor is ideal for use in hostile, on- and off-highway vehicle environments.

Connection to the sensor is with simple flying leads for customer termination.

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