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5 Reasons Why Through-Beam Photoelectric Sensors Are Widely Preferred
Wednesday, July 25, 2018

First, let’s just establish the purpose of these photoelectric sensors before moving on to what makes them so amazing.

Photoelectric sensors are used to convert light into electrical signals. And they are also used to work the other way around. They use transmitters, like light emitting element, and a receiver, like light detecting element.

There are various kinds of photoelectric sensors that differ on the basis of their applications and construction. Some of the commonly used photoelectric sensors include reflective, through-beam and retro-reflective. All these types have their own unique qualities. However, we’ll discuss why through-beam photoelectric sensors are so vastly preferred these days.

1- Long Distance Sensing

Through-beam photoelectric sensors are designed to sense longer ranges of distances than other sensors. Their long sensory range is possible because these sensors use separate housings for the emitter and the receiver. The emitter is responsible for sending the light and the receiver is responsible for receiving it. And the output is triggered when the light beam is broken and the receiver stops receiving the light.

2- Senses Reflective Objects

Another quality of through-beam photoelectric sensors is that they can sense the reflective objects without a miss. This is a task at which non-polarized retro-reflective sensors fail at times. This is because retro-reflective sensors use a reflector that bounces the light back to the receiver, allowing the light emitter and the receiver to be contained in the same housing. However, through-beam sensor eliminates this flaw because it has separate housings for its emitter and receiver.

3- Counting Parts Accurately

For the most accurate parts counting, through-beam sensors are the most reliable sensing mode. It’s because these sensors have a well defined beam and precision. However, the parts to be counted must be large enough to cover the entire beam. And since a through-beam sensor is not impaired by reflective backgrounds or objects, it is highly dependable to give consistent output.

4- Senses Easily Through Smoke, Dust & Mist

Through-beam sensors are designed to have a very high gain. This gives them the aptitude to burn through dirtier conditions in which the outputs of other sensors usually fail. These conditions may include smoke, mist and dust. By the way, more gain means more dependability and the need for cleaning is less often when compared to the other sensors. That’s because other photoelectric sensors use alternate modes due to which they have less gain. And if there is not enough gain then these sensors lose light in the conditions like smoke, mist and dust which makes it difficult for the light to reach the receiver.

5- Sense Through Containers

The high gain of through-beam photoelectric sensors can be easily used to burn through translucent, transparent or clear containers as well. This unique ability helps you to detect the contents of a container.

In short, through-beam photoelectric sensors are a superb choice if you demand long range sensing and high reliability. They are easily available in numerous housing styles with fiber optic cable that support high temperature applications. Rilco Industrial Controls offers the best quality of through-beam photoelectric sensors and have an established reputation of working with only the best companies. Contact us to find out which housing type of these sensors will suit your demand the most, so that you can benefit from their exclusive qualities.

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