Littelfuse Inc. has developed a unique contactless position measurement technique based on the measurement of flight of time (FOT), the Pulsed WaveGuide (PWG) sensor.
- Particularly useful for non-conventional shaped tanks because its continuous level sensing allows for exact measurements and customized sensor outputs
- Electronically transmits electromagnetic pulse through electromagnetic waveguide and reflection of that pulse is developed due to presence of localized magnetic field on the waveguide—typically induced by small magnet
- Offers greater flexibility in packaging for vehicle storage tanks
- Output can be customized to allow for non-linear fluid level readings due to non-conventional shape
- Applications include linear actuator position sensing, valve position sensing, as well as clutch and brake cylinder piston position
- Suited for vehicle suspension height sensing, robotic applications and industrial positioning applications
- Capable of producing highly versatile, robust and accurate (<2% accuracy without correction) distance measurement solution for detecting target without physical contact between sensor and target magnet—which can be placed behind non-ferrous wall
- Sensor package contains signal conditioning electronics and screened waveguide transmission line—sensing element which provides robustness to meet OEM ElectroMagnetic Compatibility (EMC) requirements
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