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Photoelectric Sensors

Photoelectric sensor, or photo eye, is equipment used to discover the distance, absence, or presence of an object by using a light transmitter, often infrared, and a photoelectric receiver

Photoelectric Sensors


Photoelectric sensors can be easily incorporated into an endless array of applications



Photoelectric sensor, or photo eye, is equipment used to discover the distance, absence, or presence of an object by using a light transmitter, often infrared, and a photoelectric receiver. They are largely used in industrial manufacturing. Photoelectric sensors are widely used in the industrial manufacturing sector as they provide a huge variety of problem solving alternatives in the industrial sensor market. Photoelectric technology has advanced a lot and a sensor is now able to detect a target less than 1 mm in diameter. Photoelectric sensors can be easily incorporated into an endless array of applications.


Photoelectric sensors provide three basic methods of target detection

Diffused mode or proximity-sensing mode Retro-reflective mode Thru-beam mode or opposed mode


Types of Photoelectric Sensors

Laser photoelectric sensors Fiber optics photoelectric sensors Remote photoelectric sensors


Advantages of Photoelectric sensor

Senses all kinds of materials. Longer life. Better sensing range Fast response time.
Cost effective Can detects small objects including color mark and label detection. Can detect transparent objects. Can detect long range and it is tolerant of dirty environment.


Applications of Photelectric Sensors

Check fill level of coffee in cans Count bottles moving on a high speed conveyor Detect missing labels on bottles Ensure safely control at the opening and closing of garage doors
Enable turning on sink faucets with the wave of a hand Control elevators, and open the doors at the grocery store Detect the winning car at racing events. Detect porous targets, and invisible markings on products
Detect the presence or movement of an object within a defined sensing area or zone Detect the level of contents in a hopper Check products passage in a rinsing process Locate the position of an automated storage and retrieval system
Detect the presence/absence of contents in a bottle/ milk carton Check the passage of cars on a conveyer Check positioning of cars in final assembly line Check passage of engine block