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How does a capacitive proximity sensor work?
Capacitive proximity sensors work by detecting changes in capacitance between the sensor and an object. Factors such as distance and the size of the object will affect the amount of capacitance. The sensor simply detects any changes in capacity generated between the two.
What is the features of capacitive type proximity sensor?
The capacitive proximity sensor consist a high-frequency oscillator along with a sensing surface formed by two metal electrodes. When an object comes near the sensing surface, it enters the electrostatic field of the electrodes and changes the capacitance of the oscillator.
Can capacitive proximity sensor detect water?
These proximity sensors are capable of detecting anything that can carry an electrical charge. Capacitive sensors are commonly used in liquid-level detection. Possible targets for capacitive sensors include but are but not limited to: glass, plastic, water, wood, metals, and a myriad of targets of other materials.
Can capacitive sensor detect rubber?
Capacitive sensors are capable of detecting plastic, wood, and other raw materials including metal. An inductive sensor can detect only metal. A common application is the detection of liquids, plastics, and grains.
What is an industrial proximity sensor?
“Proximity Sensor” includes all sensors that perform non-contact detection in comparison to sensors, such as limit switches, that detect objects by physically contacting them. Proximity Sensors convert information on the movement or presence of an object into an electrical signal.
What is a capacitive sensor?
A capacitive sensor is a proximity sensor that detects nearby objects by their effect on the electrical field created by the sensor.
What is a proximity switch?
A proximity switch is a device which causes a switching action without physical contact. SCHMERSAL proximity switches respond to targets that come within the active range of their generated sensing fields.