70156-2157

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Optical Sensors - Photoelectric, Industrial

Optical sensors are used for a variety of applications, from measuring the brightness of a light source to measuring the position of a moving object. One type of optical sensor is the photoresistor, used in applications where the amount of light striking a surface needs to be determined. In such applications, the photoresistor acts as a transducer, converting the amount of light it receives into a measurable electrical signal.

Industrial applications of optical sensors also use photoresistors, but in this case they measure the amount of light produced by a machine or process rather than the amount of light striking a surface. The photoresistor then produces a proportional electrical output that can be used to control the speed or position of a process. This type of sensor is also commonly used in factory automation and industrial process control.

A type of industrial optical sensor that is gaining popularity is the 70156-2157 optical sensor. This sensor uses a combination of infrared (IR) and visible light to detect objects, allowing it to provide accurate and reliable results in a variety of environments. It can detect objects up to around 30 cm away, allowing it to be used in applications where a large detection range is required.

The 70156-2157 optical sensor’s working principle is based on the use of two light sources, one infrared and one visible. The visible source is a standard light-emitting diode (LED). An IR-pass filter is placed in front of the LED, which allows only the infrared portion of the light to pass through. The visible light is then scattered by the object the sensor is intended to detect. The scattered light then passes through another filter, which allows only the infrared portion of the light to pass through again.

The IR light is then received by the sensor’s detector and converted into an electrical signal. This signal is then used to activate the sensor’s output function, which can be used to either start or stop a process or control a motor or device. This output signal can be used to control a variety of functions, including motor speed, torque, pressure, or position.

The 70156-2157 optical sensor is a low-cost, low-power device that is ideal for a wide range of industrial applications. It is resistant to electromagnetic interference, making it suitable for harsh environments, and can be easily integrated into existing automation systems. With its combination of reliable performance, low cost, and ease of integration, the 70156-2157 optical sensor is becoming increasingly popular for industrial applications.

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