电感式传感器由两部分构成
前端由缠绕着发射、接收线圈的铁芯构成检测部分；后端为电路部分，整体封装在塑料或金属外壳中。工作时，电磁铁芯部分发生交变磁场，对靠近的金属物体表面产生涡流效应，从而削弱LC震荡电路，放大电路部分分析电磁铁芯接收线圈的微弱LC震荡电路变化，并给予相应的输出。
电感式接近传感器应用注意事项
不同外形尺寸，其额定检测距离一般至多到100mm。通常状态下，各厂家对于其标称的检测距离为在实验室条件下测得的额定检测距离。实际应用中，考虑到各方面的环境因素，其可靠检测距离约为额定检测距离的80%，但对于被测物是有一定要求的。由于应用现场的被测物材料的导磁性和尺寸大小，一般情况下达不到标准被测物的要求，那么传感器的检测距离会进一步的衰减，这也就是很多用户感觉电感传感器的检测距离比厂家标称的小很多的原因。在这种非标检测的情况下，各厂家及其不同系列产品的差异较大。另外，更深入的讲，在抗电磁干扰性、环境温度、电压扰动以及安装要求等方面，都存在着差异。
选择合适的传感器，会大幅提升设备运转的稳定性和可靠性，也最大的可能性减少传感器的失效或损毁，减少不必要的维护投入。汽车制造业在生产过程中，大量使用电感式传感器作为定位检测，如何针对此行业选择最适合的产品，显得尤为重要。
Inductive sensors consist of two parts
The front end is composed of an iron core wrapped around the transmitting and receiving coils, forming a detection part; The backend is the circuit part, which is packaged in a plastic or metal casing as a whole. During operation, an alternating magnetic field occurs in the electromagnetic core, causing eddy current effects on the surface of nearby metal objects, thereby weakening the LC oscillation circuit. The amplification circuit analyzes the weak LC oscillation circuit changes in the receiving coil of the electromagnetic core and provides corresponding outputs.
Notes on the application of inductive proximity sensors
The rated detection distance for different external dimensions is generally up to 100mm. Normally, each manufacturer's nominal detection distance is the rated detection distance measured under laboratory conditions. In practical applications, considering various environmental factors, the reliable detection distance is about 80% of the rated detection distance, but there are certain requirements for the tested object. Due to the magnetic conductivity and size of the tested material in the application site, it is generally not possible to meet the requirements of the standard tested material. As a result, the detection distance of the sensor will further decay. This is why many users feel that the detection distance of inductive sensors is much smaller than the manufacturer's nominal value. In this non-standard testing situation, there are significant differences among manufacturers and their different series of products. Furthermore, to delve deeper, there are differences in terms of electromagnetic interference resistance, environmental temperature, voltage disturbances, and installation requirements.
Choosing the appropriate sensor will greatly improve the stability and reliability of equipment operation, minimize sensor failure or damage, and minimize unnecessary maintenance investment. In the production process of the automobile manufacturing industry, a large number of inductive sensors are used for positioning detection. It is particularly important to choose the most suitable product for this industry.
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