Measuring with Ultrasonic

Bats are the most popular animals using the principle of ultrasonic for their orientation. They are discharging highly frequented sounds and use their reflected echo from objects to find out the position and distance of those. 

This method is also usable in industrial measurement techniques. The sensors developed by PIL are based on the run-time measurement of the ultrasonic in the air and help to determine the position and distance from objects automatically.

Approximation switches, sensors and light barriers using different methods are able to recognize objects in fix distance areas but their functionality highly depends on the surface structure of the aimed objects. In general, they can not give any information about the exact position or the change of the position of an object. 

The ultrasonic distance sensors of PIL were made to conquer these limited application possibilities. Even continuing requirements in distance measurement can be covered. 


With the productsseries P42, P44 and P47 PIL developed a variety of contact-free distance sensors, each optimized for different applications. 

The used know-how is seen in many patents on authoritative techniques concerning ultrasonic sensors.

PIL-ultrasonic sensors stand out especially with:

  • high definition
  • optimized precision
  • great sensing width
  • low minimum distance
  • great sensing distance
  • high sealing up to IP68

Due to high carrier frequencies as well as a modern signal converting the sensors guarantee an exact operation without disruptions. For the transfer to a processing computer, there are analogue, digital or switching norm-outputs or RS232- and RS485-interfaces. With synchronization mechanisms, more sensors can be used at a time, which makes the sensing of structures with sensor arrays possible. 

Series P41

Series P42

Series P43

Series P44

Series P47

Series P48

Series P49

Series P53