Rotary Position Sensors

NRH271 & NRH272 No-Contact, Rotary Position

NRH271 & NRH272 No-Contact, Rotary Position

Product Brand: Penny & Giles

The NRH271 and NRH272 family of no-contact, Rotary Position Sensors offers the optimal combination of performance, safety and cost. All variants utilise proven Hall-effect sensing technology and are accommodated in a low-profile housing with a compact footprint.

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
Fail-safe outputs
PWM output
Encapsulated electronics
Sealing to IP67
AMP or Deutsch connector options
Flying-lead option
Protective cable conduit option
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 7mm, 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.

A choice of power supply options are available – one for connection to a regulated 5V supply and the other to a varying voltage in the range of 9-30V, such as a vehicle’s battery. The NRH271 range has a single output, while the NRH272 has a second, redundant output. In addition, the NRH272 contains two completely independent measuring circuits, each with its own power supply, meaning high-performing, safety-critical applications can easily be addressed. 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.

A fully-encapsulated 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 options are industry-standard AMP Superseal or Deutsch DT04 series connectors, or simple flying leads for customer termination. The sensor can also be supplied with a protective conduit for the cabling.