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Capacitive SensorsDefinition: Position sensor for detecting conductive and non-conductive materials.
Capacitive sensors detect the change in capacitance of an object when it enters the sensor's electrical field. These sensors can detect not only metal, but even non-conductors whose dielectric constants are sufficiently large. Properly selected, a capacitive sensor is also able to 'see through' certain non-metallic materials. This makes it the classical level detector, sensing the presence of absence of liquids or granular material through the container wall.
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