Touchless variable gap sensor

Our touchless variable gap sensor creates immunity to radial and axial play on mobile shafts where significant misalignment results in poor operational performance and labourintensive maintenance programmes.

A round or arc magnet (where 360 degrees rotation angle is unnecessary) is attached to rotating parts of kit, such as boom loaders, skid steer buckets and hitch arms, and the electronics module to the chassis (or vice versa).

Over 50 million cycles, stable electrical output and the specified linearity is maintained between both sensor packages despite any radial and axial play such as +/- 5 to +/- 7mm (and upwards) respectively.

Technical specifications

Output: analogue (ratiometric), PWM, SPI
Resolution: analogue - PWM: 12 bits / SPI: 14 bits
Linearity: +/-1% absolute (+/-0.5% absolute upon request)
Supply voltage: 5, 12, 15V
Supply current: typ 8.5mA for single output / 17mA for dual output
Voltage protection: +/-10V
Rotational life: over 50 million cycles
Switch output: programmable at factory
Mechanical rotation angle range: max 360º
Electrical rotation angle range: min 15º
Radial play: +/-  5mm (others on request)
Axial play: +/- 7 mm (others on request)
Redundancy: Yes
Magnet diameter: custom
Mounting: custom
Connectivity: custom
Sealing: custom

All Piher sensors are low-profile, yet extremely rugged and can be custom-engineered to fit existing mechanical assemblies.

  Download datasheet