HOA1881-012

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Optical sensors, also known as photoelectric sensors, use a beam of infrared light to detect the presence or absence of objects. The HOA1881-012 Photointerrupter is a specific type of optical sensor that uses a slot type design with a transistor output. It works by sensing whether an object is present or absent within its sensing range.

The slot type design of the HOA1881-012 consists of an emitter and a receiver situated opposite each other in a groove. The groove is made of plastic or metal, and is sized to fit the object being sensed. When an object is placed in the groove, the distance between the emitter and receiver is small, and the infrared light beam is blocked. This signals to the circuit that an object is present. When no object is present, the distance between the two is greater, and the beam is not blocked. This signals to the circuit that no object is present. The output of the HOA1881-012 is either an open collector NPN or PNP transistor, providing either logic low or high output.

The HOA1881-012 is typically used in automation, transportation, and medical equipment. In automation applications, it is often used for positioning of parts, sensing moving objects, and obstacle detection. In transportation, it is used for measuring speed of conveyance systems and detecting steering, braking, and acceleration. In medical equipment, it is used for controlling fluid flow, monitoring vital signs, and patient identification.

The HOA1881-012 operates on a DC supply voltage with a wide operating range of 4.5 to 24V. It has a low power consumption of 35mW and an operating temperature range of -15 to +70°C. It has a high speed response time of up to 100kHz, allowing for fast detection and triggering in automation applications. Furthermore, it has a wide sensing range up to 4mm in air or 2mm in metal slot. The mechanical structure of the sensor is fairly small at 6.6mm wide, 8.8mm high, and 8.3mm deep.

In summary, the HOA1881-012Photointerrupter is an optical sensor designed to detect the presence or absence of objects within its sensing range. It uses a slot type design with an emitter and receiver situated opposite each other. It has a wide voltage range, a low power consumption, a high speed response time, and a wide sensing range. It is typically used in automation, transportation, and medical applications.

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