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QDY-SF RF Admittance Level Switch
QDY-SF uses RF admittance technology with a three-electrode guard-ring design to distinguish actual material contact from buildup on the sensing probe. Active compensation helps prevent false switching caused by viscous coatings, sticky sludge and accumulated dust, reducing unnecessary maintenance in demanding level applications.
With continuously adjustable sensitivity from 0.5pF to 100pF, QDY-SF adapts to materials with different dielectric characteristics, including viscous liquids, sludge, powders and granular solids. This makes the same sensing principle suitable for a broad range of point-level detection applications.
QDY-SF is available in configurations for different process conditions, including standard, high-temperature and corrosion-resistant applications. High-temperature versions support process media up to 250°C continuously, while PTFE wetted options are available for strong acids, alkalis and other corrosive media.
Working Principle Diagram
