OPB746WZ

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The OPB746WZ is an optical reflective sensor designed to detect the presence of an object by sensing the changes in a reflective light intensity. The device offers a wide variety of applications, from sensing reflectance changes or intrusion detection to distance and position measurement. Utilizing a dual diode light source, this optical sensor is able to detect changes in both ambient and reflective light intensity.

The OPB746WZ is constructed with a bidirectional optical coupler, a plated constant current regulator, and a 4-pin header that provides power and output terminals. It has an analog output signal which can be adjusted through the use of the miniature rear-panel potentiometer. The output strength can be adjusted from 0 to 24 IDC or VDC depending on the direction and condition of the measurements.

The OPB746WZ is an ideal device for application in optical detection with a wide sensing range up to 2m. Additionally, this device is capable of measuring up to 4m with reflective sensing due to its powerful transmitting diode. Its built-in logic level output enables easy interfacing with any digital system. The OPB746WZ is also highly sensitive and is equipped with a reliable mechanical protection contact accommodating a number of industrial environments such as industries, agricultural and mining.

The working principle of the OPB746WZ is simple. It uses the differences in reflective and ambient light intensity to measure the presence of an object. The device utilizes two light sensors with the respective optical emitters that are aimed in opposite directions. When an object is placed in the detecting zone, the receiver of the device detects the change in the light intensity, and then a signal is sent to the output device. The intensity of the signal depends on the reflective intensity of the object.

The OPB746WZ is able to detect variations smaller than 0.005 lux and has a switching response time of 30ms with a maximum intensity response of 2m. Additionally, the outputs are open collector, which allows the user to configure the outputs as either normally open or normally closed. The unit can be powered by the internal battery or externally by a 5V to 36V power source.

The OPB746WZ is an economical solution for applications that require optical sensing for detection or monitoring purposes. It offers a wide sensing range up to 2m and can be easily interfaced with any digital or analog systems. With its powerful transmitting diode and fine resolution of 0.005 lux, this device is highly suited for environments where sensitivity, accuracy and reliability are of paramount importance.

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