Vibrating Fork Level Switch
RS85 - ABB Ltd.
The resonator utilizes a piezoelectric driven tuning fork that exhibits a large change in resonant frequency when immersed in any liquid. A "smart" microprocessor-based electronic unit keeps the sensor in a resonant state as it changes from dry to wet or wet to dry.
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Liquid Level Sensor
LevelMaster - ABB Ltd.
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Guided Wave Radar Level Transmitters
LWT Series - ABB Ltd.