NRH271 & NRH271 - No-Contact, Rotary Position Sensor0 pages

No-Contact, Rotary Position Sensor

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 – 244Hz, 500Hz or 1,000Hz
Fail-safe outputs
Encapsulated electronics
Sealing to IP67
AMP or Deutsch connector options
Flying-lead option
Protective cable conduit option

The NRH271 and NRH272 is a family of no-contact, Rotary
Position Sensors that offers the optimal combination of
performance, safety and cost. All variants utilise proven Halleffect, sensing technology and are accommodated in a lowprofile (9.5mm) housing with a compact footprint of just 36 x
35mm.
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, factoryprogrammable 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
(IP68 rated) or Deutsch DT04 series (IP67 rated) connectors,
or simple flying leads for customer termination. The sensor
can also be supplied with a protective conduit for the cabling.

Industrial Group