易福门IFM接近传感器
IFM接近传感器凡是须安全无接触地识别物体精确位置的所有领域都应使用光电传感器，其中不论所检测的物体是什么样的材料，该产品都能正常运行。与接近传感器相比，光电传感器具备更大的检测范围。对射式传感器该系统由两个单独的部件组成:即一个发射装置和一个接收装置。发射装置在红外线或红色波长区域内发出光线。接受装置识别到达的光束，并将检测范围内的物体引起的中断立即转换成开关信号。
IFM接近传感器  镜面反射传感器的发射装置和接收装置处于一个外壳中，通过一面反射镜可以将发射的光束反射到接收装置上。当一个物体出现在光束路线中而中断路线时，并进行开关转换。无偏振滤光镜的镜面反射传感器用红外线工作，带偏振滤光镜的系统采用可见的红光工作。
IFM接近传感器漫反射传感器用于物体的直接检测。与镜面反射传感器一样，漫反射传感器的发射装置和接收装置处于一个外壳中。发射装置发射出光线，该光线由被识别的物体反射，并由接收装置识别。该系统不估算光束的中断，而估算物体反射回来的光线。重要的是开关功能根据light-on / dark-on模式调节。该系统发射的光线也是脉冲的。
IFM接近传感器如同对射式传感器由面对面的发射装置和接收装置组成。两个部件都是叉形或角型的固定部件，且无需面对面排列。
IFM接近传感器叉式和角型光电传感器如果一个物体进入检测区域，光线会被中断同时一个开关信号会产生。叉式和角型光电传感器采用特别细小的光束，适用于检测细小的物体。 　　红外线传感器检测物体µm区域内的热辐射，并转换成电子开关信号。传感器作为红外线接受装置工作。这样物体本身作为传感器的发射装置工作。已发射的红外线射线的光谱直接取决于物体的温度。与温度传感器（如PT100）相比，该传感器zui大的优点是在物体和传感器之间没有机械的接触。
 易福门IFM接近传感器
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