E3T-SL21M

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Optical sensors are composed of light-emitting and light-responsive components, which rapidly detect the presence of an object as well as its shape and size. The sensitivity of the optical sensor\'s detection and response can be adjusted, allowing for precision measurements that depend on the application. One type of optical sensor is the E3T-SL21M, which is a high-precision photoelectric sensor developed for the industrial field.The E3T-SL21M consists of a high-grade aluminum alloy housing, an internal infrared LED, and an NPN transistor output amplifier. It has a detection range of 0.2 to 5 m and a sensing head size of 32×20×25 mm. The output range of the amplifier is 2 to 8 VDC and the current consumption is max. 30 mA. The output response time is adjustable from 0.5 ms to 3 ms.The E3T-SL21M has many advantages that make it appealing for industrial applications. The internal components are sealed against dust or oil to enhance performance, and it is also resistant to the influence of oil, temperature, and humidity. Its IP67 rating adds to its operational stability.The optics of the E3T-SL21M are well-suited for industrial applications. The infrared LED can be used for long distances, while its ultra-small reflecting surface makes measurement precisely and accurately. Its sensing head is designed to fit into tight spaces, allowing for easy use in a wide range of industrial machines.The sensing principle of the E3T-SL21M is based on the internal transmission and reflection of a signal. When an object is detected, it reflects the light from the LED back toward the sensor. When this light is detected, the NPN transistor output amplifier of the E3T-SL21M will increase the output voltage, signaling that an object has been sensed.The E3T-SL21M photoelectric sensor is an excellent choice for use in industrial applications. Its features enable it to reliably detect objects quickly and accurately, and its rugged construction and adjustable output response time provide a long life and reliable performance. The E3T-SL21M is also cost-effective, making it an ideal choice for many industrial applications.

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