Curtiss-Wright NRH305DR

No-Contact, Rotary Position Sensor, 5Vdc.

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

The Curtiss-Wright (Penny & Giles) NRH305DR utilizes proven Hall effect sensing technology in a low-profile (8mm) housing with a separate magnet for true non-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, like 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.

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Mechanical Angle 360° continuous -
Maximum Operating Speed 3600°/s -
Weight <45g -
Mounting 2x M4 screws, recommended tightening torque 2.0Nm -
Cable 6-core cable, DR-25 jacket, 28 AWG Spec 44A wires Minimum bend radius is 5x the cable OD for static applications (20.5mm) and 10x the cable OD for dynamic applications (41mm) -


Measurement Range 20 - 360° in 1° increments -
Supply Voltage 5Vdc ± 0.5Vdc -
Supply Current <25mA -
Supply Reverse Polarity Protection -
Short-Circuit Protection to GND -
Short-Circuit Protection to Supply -
Over-Voltage Protection Up to 10Vdc -
Power-On Settlement <1s -
Resolution 12-bit (0.025% of measurement range) -
Linearity (Absolute) <±0.4% -
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Voltage Outputs - -
Output Range A1 10-90% ±1% of Vsupply over measurement range
Monotonic Range 5% to 95% nominal
Output Range A5 4-96% ±1% of Vsupply over measurement range
Monotonic Range 1% to 99% nominal
Load Resistance 10kΩ min. (resistive to GND)
Output Noise <1mV rms
Input/output Delay <2ms
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PWM Outputs - -
PWM Frequency 244Hz, 500Hz or 1kHz ±20%
PWM Levels 0V and Vsupply ±1%
Duty Cycle 10-90% over measurement range
Monotonic Range 5-95% nominal
Load Resistance 10kΩ min. (resistive to GND)
Rise / Fall Time <15µs typical


Operating Temperature Range - 40°C to 120°C -
Storage Temperature Range - 40°C to 120°C -
Sealing IP68, IP69K -
Vibration BS EN 60068-2-64:2008 section 8.4 (31.4gn rms) 20-2000Hz random -
Shock 2500g -
MTTFd > 400 years -
Electromagnetic Interference EN 61000-4-3 to 100V/m 80-1000MHz & 1.4-2.7GHz -
Salt Spray BS EN 60068-2-52 test Kb severity 2 -


Features and Benefits - -
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 -


Applications - -
Hostile Environments -
On- and Off-Highway Vehicle -


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