PM-L44-C3

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Optical sensors, or optoelectronic sensors, measure the use of light in applications such as inspection, computing, communications, industrial automation and robotics. Photointerrupters are devices used to detect the presence or absence of an object through the interruption of light. These devices are ideal for non-contact detection of moving or stationary objects. The PM-L44-C3 is a slot-type photointerrupter with transistor output designed to detect the presence or absence of an object using an external light source.

Application Field

The PM-L44-C3 photointerrupter is a compact and cost effective device that can be used for a variety of applications in automation, industrial robotics and product testing. This type of sensor is ideal for applications such as motion and speed detection, tachometers, counting and material handling equipment. The PM-L44-C3 has a wide range of operating voltages and a small form factor to allow for easy integration and compatibility with existing systems.

Optical System

The PM-L44-C3\'s optical system consists of an emitter and a receiver in a compact, low profile package. The emitter includes an LED and an optical filter to allow the transmission of just the desired wavelength of light. The receiver includes a phototransistor and a narrow slit which allows light to pass through when an object is present. The optical filter helps ensure that the device will work only in the desired environment, rejecting any background light or glare from the environment.

Working Principle

The PM-L44-C3\'s working principle is simple. When an object is present, the light passing through the optical slit is blocked or interrupted, causing the phototransistor in the receiver to be activated. This, in turn, switches the transistor output from low to high. When the object is removed, the slit allows light to pass through, deactivating the phototransistor and switching the output back to low.

Design Features

The PM-L44-C3 is designed to be a reliable, cost-effective solution for detecting objects. It has an operating temperature range of -40 to +85°C, a wide operating voltage range of 4 to 24 VDC, and a fast switching speed of 0.5 ms. It has a narrow slit dimension which allows for more accurate detection, while its unique optical filter helps to reject any background light or glare from the environment. This filter helps to ensure that the device will work only in the desired environment.

Conclusion

The PM-L44-C3 photointerrupter with transistor output is a compact, cost-effective and reliable solution for the detection of objects. Its fast switching speed, wide operating range and narrow slit dimension make it suitable for a variety of applications in automation, industrial robotics and product testing. With its unique optical filter, it is able to reject any background light or glare from the environment, ensuring that the device will work only in the desired environment.

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