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Photoelectric switches, also called photoelectric sensors, can convert optical signals into electrical signals based on the principle of wave-particle duality. Photoelectric switches can detect non-electric quantities that directly cause changes in light quantity - such as light intensity, illumination, radiation temperature measurement, gas analysis, etc.; they can also detect other non-electric quantities that can be converted into changes in light quantity - such as part diameter, surface roughness, displacement , vibration, speed, acceleration, object shape, identification of working status, etc.
Photoelectric switches have three output types: visible red light, infrared light, and laser. This article will explain to you the differences between the three so that you can better choose the appropriate photoelectric switch.
1. Visible red light:
It has a wide range of uses and can be used in a variety of production scenarios. It has sensitive detection response at close range and is cheap. It can be used as a setting aid, but it is not suitable for long-distance detection and is easily affected by factors such as background color.
2. Infrared light:
In most sensing ranges, infrared light is not affected by color, has the ability to penetrate dust, mist, and steam, and is cost-effective.
3. Laser:
The laser photoelectric sensor has strong penetrating power and long sensing distance. It can support the detection conditions of small targets at long distances. The concentrated small beam spot ensures precise switching points. However, the cost is higher, and compared with the first two types of photoelectric switches, the price is more expensive.
Kejit photoelectric sensor can reliably identify the presence of targets. They reliably detect shapes, colors, distances or thicknesses with high detection accuracy. Their detection range is significantly larger than inductive or capacitive proximity switches.
We offer you sensors with all light types, from red light, infrared coverage to laser technology. You can choose from a variety of different scopes, with or without background blackout. For example, miniature sensors, color sensors, light strips and contrast sensors are available for special applications. All light types, all functional principles, different ranges of action from near to far, coordinated with the requirements in automation, robotic manufacturing technology, installation and operation, robust and reliable, also in adverse environmental conditions, by being attractive The technical data ensure flexibility during planning and installation.
