You need a device to sense boxes passing on a conveyor, a sensing distance of 5 feet, that will have all sensor units that require power on one side of conveyor. What is the best sensor to use?
A) Retroreflective photoelectric
B) Transmitted beam photoelectric
C) Diffuse photoelectric
D) Capacitive proximity
E) None of the above

Question

Quizplus · Accepted Answer

Retroreflective photoelectric sensors are ideal for this application because they can detect objects up to several feet away and only require power and mounting on one side of the conveyor. The reflector placed on the opposite side reflects the light back to the sensor, allowing for efficient detection of passing boxes.

You Need a Device to Sense Boxes Passing on a Conveyor