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They emit high frequency sounds and use the echoes reflected by objects to recognize position and distance.
This procedure can also be used in industrial measurement technology. PIL sensors are operating with the time of flight measurement principle of ultrasonic pulses. They are used to determine positions and distances of objects in automatic processes.
Proximity switches, capacitive and photoelectric sensors are capable to detect objects within fixed distances. However, these measurements depend on surface structure, color and material of the objects.
The ultrasonic proximity sensors from PIL have been developed to overcome such restrictions in the range of applications. Also the majority of requirements for measuring distance can be met.
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