PM-L45-C3

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Optical sensors are often used in automated systems to control movement and measure the size or speed of an object. The PM-L45-C3 is a particular type of phototransistor or photointerrupter called a “slot type,” and is designed with a logic output.

As the name implies, it is a device with a slit or “slot” which is interrupted by an object passing through it. An LED transmitter and a phototransistor receiver are both positioned in either side of the slot, configured such that the light from the LED transmitter is blocked by any object being passed through the slot. The moment the light is blocked, the phototransistor produces an electric signal corresponding to its interruption and sends this signal to the logic output.

The sensitive area of the PM-L45-C3 is adjacent to the sensing slot, meaning even a very thin or small object can be detected. This makes it ideal for applications like counting pulses, measuring spacing between objects, or detecting the passing of thin objects like paper or even shoe laces.

The main benefit of the PM-L45-C3 is its cost efficiency; it is an inexpensive solution for a variety of sensing applications. In addition, it is able to work over a wide temperature range of -40° to +85°C so it can withstand harsh environmental conditions. It has a long sensing range of up to 300mm for the PM-L45-C3E and 100mm for the PM-L45-C3; both versions offer a fast response time of up to 1ms.

In terms of installation, the PM-L45-C3 comes with a simple mounting structure with two slots that are divided in the center, and the phototransistor is fixed at one of these slots and the LED is fixed at the other. A nut and screw are used to fasten the PM-L45-C3 to the surface of the object where it will be used.

The PM-L45-C3 is a reliable and effective optical sensor that is designed for different types of applications that require a short response time. It is an ideal choice for counting pulses, measuring spacing between objects, or detecting the passing of thin objects like paper or shoe laces. It is simple to install and can work over a wide temperature range to withstand harsh environmental conditions. Overall, the PM-L45-C3 is a cost efficient and reliable optical sensor that can be used in a variety of sensing applications.

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