SENSOR SOLUTIONS

Hall Effect Position Sensor Withstands Harsh Environments

The 981 HE throttle-position sensor from Vishay Intertechnology is available in hollow and D-shaft versions. It employs Hall effect technology to allow operation in harsh environments.



The device can perform in conditions involving high-frequency vibrations up to 20G and shocks up to 50G over a temperature range of −45°C to +125°C, significantly outperforming other technologies.

The sensor is suitable for a wide range of control sensing applications. These include sensing foot pedal position; throttle position; steering position; drive-by-wire, lift and shuttle positions; suspension system position and tilt control and tilt positioning feedback. Such functions are common in marine, avionics, forklift trucks, farm equipment, cranes and automotive applications.

With all angles to 360° available with no dead band, the device features accurate linearity down to ±0.5%. The sensor offers a long life, greater than ten million cycles for the D-shaft version and greater than five million cycles for the hollow-shaft version. The 981 HE provides continuous performance for the life of the device without drift in linearity. Spring-loaded versions of the device are also available.

The sensor requires a supply voltage of 5V ±10%; other values are available upon request. It typically draws a supply current of 10mA and consumes 16mA for PWM output. The 981 HE offers +20V over voltage protection and −10V reverse voltage protection. The recommended load resistance is 1kΩ for both analogue output and PWM output. Redundant output signals are available upon request.

Features

• Rugged Hall effect sensor for driver and machine controls
• Continuous drift-free performance over device lifetime
• All electrical angles up to 360°, no dead band
• Spring-loaded version
• Hollow or D-shaft versions
• Designed for harsh environments
• Extremely easy and quick to mount

Applications

• Foot-pedal position sensors
• Throttle position sensors
• Steering position sensors
• Drive by wire
• Lift and shuttle position sensors
• Tilt control and tilt positioning feedback
• Suspension-system position sensors
• Marine
• Avionics
• Industrial vehicles: farm equipment, cranes, fork lifts

For further information, including the Vishay 981 HE Hall Effect Sensor Datasheet, please click here