Inductive proximity switch utilizes the principle of mutual inductance of metal conductor and alternating magnetic field. The detection coil located at the front end of the sensor produces high frequency magnetic field. When the metal object approaches the magnetic field, eddy current is generated inside the metal object, which results in the energy attenuation of the magnetic field. When the metal object is constantly close to the sensor's inductive surface, the energy is absorbed and the attenuation is caused. When the attenuation reaches a certain degree, the sensor switch is triggered to output signal, thereby achieving the purpose of non-contact detection.
- Detection gate opening/closing
- Detection cam position
- Detection of moving aluminum stencil
- Unit count
- locate the object
- inspect the rotate speed