OPB990T55

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Optical Sensors - Photointerrupters - Slot Type - Logic Output

The OPB990T55 is a type of optically encoded sensor which is designed to detect an object in its sensing area. This type is considered to be part of the optical sensors family, more specifically of the photointerrupters – slot type – logic output.

Application Field

The OPB990T55 is normally used in industrial applications and robotics. It can detect objects like paper, plastic or metal, thanks to its special optical sensor technology. It can also be used in automated processes to detect the position of an object or detect a change in the position thanks to its innovation logic output. It is mainly used for counting, pulse-width modulation of signals, electronic switches, frequency division and other digital applications.

Working Principle

The OPB990T55 uses a slot type infrared photo interrupter which is triggered by an incoming object. The device is composed of an infrared emitter and an infrared detector in a plastic housing. The emitter emits an infrared light beam, which is detected by the detector when an object passes in between them, disrupting the light beam.

The device emits an electric signal when it detects the interruption of the beam, allowing the system to know when an object has passed through the sensing area. The output of the device is activated when the object blocks the infrared light beam, and deactivated once the object passes through out of the sensing range.

The OPB990T55 is a low cost and very reliable device, as it features a robust plastic housing and an overvoltage protection. The device requires a power supply of 5V and its output signal has a voltage range of 3V to 24V. The device produces a very fast response time of 10μs and has a working temperature range of -20°C to +70°C.

Conclusion

In conclusion, the OPB990T55 is a highly reliable and low-cost optically encoded sensor which provides a great solution for industrial automation and robotics applications. It is a slot-type photo interrupter with logic output which can detect objects when they pass in its sensing area. It features a robust housing, an adjustable power supply, an overvoltage protection and a very fast response time of 10μs.

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