OPB872P51

Optical Sensors have been used in the field of automation for years. This is due to their ability to accurately detect the presence or absence of light in proximity. Photointerrupters are just one type of optical sensor, and are often used in applications such as safety switches, limit switches, and presence detection in order to improve accuracy and efficiency.

The OPB872P51 is a slot type photointerrupter that utilizes a transistor output. It is a single element detector that can be used for a variety of applications such as detecting the presence of liquid in a tank, the purpose of which is to shut a system off if a certain level of liquid has been reached. Additionally, it can be used to limit movement in machinery so that it does not exceed a certain range of motion.

The OPB872P51 includes a long slot which is interrupted by a small tab, and when the ON-Mark is detected, the unit will energize and remain on until the slot is once again filled. The output of the unit is an open collector NPN which offers compatibility with TTL and CMOS. It includes a built-in reverse-polarity protection, which helps protect the unit from damage due to incorrect wiring.

The actual working principle of the OPB872P51 relies on the fact that light exists only when nothing is blocking it. When a metal object passes through the slot, the light is blocked, and the transistor output will be set to 0. When the object moves out of the slot, the transistor output will be set to 1, allowing the user to detect the presence or absence of the object.

The OPB872P51 is a versatile and reliable solution for applications which require a high level of accuracy. Its simplicity allows it to be used with minimal configuration, and its reverse-polarity protection ensures that it will remain safe from damage due to incorrect wiring. It is an ideal solution for applications which require a high degree of accuracy and reliability.