SUNX proximity sensor principle

Due to the use of the contactless output method, the life extension (except for the magnetic type) uses a semiconductor output, which has no effect on the life of the contact.

Unlike the light detection method, it is suitable for use in water and oil environments, and is almost unaffected by the stains, oil, water, etc. of the object to be detected. In addition, it also includes Teflon shell and good drug resistant products.

High-speed response compared to contact switches

Can correspond to a wide range of temperatures

The physical properties of the detected object are detected without being affected by the color of the detected object, so it is hardly affected by the surface color or the like.

Different from the contact type, the influence of the ambient temperature, surrounding objects, and similar sensors, including the inductive type and the electrostatic capacity type, affect each other. Therefore, for the setting of the sensor, mutual interference needs to be considered. In addition, in the inductive type, it is necessary to consider the influence of the surrounding metal, and in the electrostatic capacity type, the influence of the surrounding objects needs to be considered.

The detection principle of the inductive proximity sensor detects the magnetic loss caused by the eddy current generated on the conductor surface by the influence of an external magnetic field. A method of detecting an impedance change caused by an eddy current generated by a metal body of the body by detecting an alternating magnetic field in the detecting coil. Further, as another method, an aluminum detecting sensor that detects a frequency phase component and an all-metal sensor that detects only an impedance change component through the working coil are further included. The state of the transformer occurs on the surface of the detector side and the sensor side.

The SUNX proximity sensor is a general term for sensors that do not require contact with a detection object for detection, instead of a contact detection method such as a limit switch. The movement information and presence information of the detected object are converted into electrical signals.

In the detection method for switching to an electric signal, a method of detecting an eddy current generated in a metal body to be detected by electromagnetic induction, a method of changing a capacity of an electric signal caused by proximity of a sample, and a method of guiding a switch and a guide switch are included. . In the JIS standard, the JIS standard (JISC8201-5-2 low-voltage switchgear and control device, fifth control circuit device and switching element, and the second section are established according to the non-contact position detection switch of IEC60947-5-2. switch). In the definition of JIS, products that can detect the proximity of an object and the presence or absence of a nearby detection object in a non-contact manner are collectively referred to as "proximity switches", which are inductive type, electrostatic capacity type, ultrasonic type, photoelectric type, magnetic force. Type and other components. In this technical guide, an inductive proximity sensor that detects the presence of metal, a capacitance type proximity sensor that detects the presence of metal and non-metallic objects, and a switch that uses a magnetic field generated by a magnetic field are defined as "proximity sensors."

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