Inductive Proximity Sensors
Inductive proximity sensors can detect metal targets approaching the sensor without making physical contact with the target. The inductive sensor generates an electromagnetic field in the vicinity of the face of the sensor to create a detection zone. A detection occurs and the sensor switches on when a metal target in the vicinity of the sensor disturbs that field and reaches the operating point. The sensor switches off when the target moves away from the sensor and reaches the release point. The sensing range of an inductive proximity sensor varies depending on the type of metal being detected.