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Serviceline Industrial Sensors
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Tech phone: 0161 622 6311
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Transporting Printed Circuit Boards

PCB detection using ultrasonic sensors

The F77 direct detection sensor features a wide projection cone to generate a measuring range of 20 mm...250 mm, allowing reliable detection of the PCBs as they pass
The F77 direct detection sensor features a wide projection cone to generate a measuring range of 20 mm...250 mm, allowing reliable detection of the PCBs as they pass
From modern smartphones and household appliances through to the cars we drive, electronics - and therefore PCBs - are an indispensable feature of almost every machine available today. These PCBs are the beating heart of any device and must be handled with the utmost care. Ultrasonic sensors help to reliably control the production process of these highly sensitive PCBs. Owing to the extremely tight space restrictions prevalent in this manufacturing application, the F77 miniature sensor is the ideal solution. At just 31 mm high and 12 mm wide, it fits perfectly underneath the conveyor belt.

Small ultrasonic sensor with a big projection cone

The F77 direct detection sensor features a wide projection cone to generate a measuring range of 20 mm...250 mm, allowing reliable detection of the PCBs as they pass. The PCBs should enter the projection cone of the ultrasonic sensor at as perpendicular an angle as possible to ensure reliable reflection of the sound waves. A suitable distance between the PCB and the sensor must be calculated to eliminate the risk of raised components on the PCB falling in the sensor blind zone. Projection cone spread must be accounted for if the measuring distance is enlarged.


Ultrasonic technology for even greater reliability

Ultrasonic sensors provide a dependable switching signal even when faced with reflective surfaces, which are actually excellent reflectors of sound waves. Recesses in PCBs are rendered insignificant due to the width of the sound beam. Harnessing ultrasonic technology within the new miniature design offers a combination of significant benefits.


Interference- and maintenance-free system operation

Achieve interference- and maintenance-free operation for your system by integrating the tiny F77 into your application. The ultrasonic sensor continues to deliver reliable switching signals and superb background suppression even in the face of PCBs with recesses and reflective surfaces. Due to the extremely limited space restrictions in the conveyor belt, the F77 miniature sensor is the perfect solution to guarantee the safe and reliable operation of your production equipment.


The ultrasonic sensor continues to deliver reliable switching signals and superb background suppression even in the face of PCBs with recesses and reflective surfaces

Your advantages at a glance

  • Very small design with tiny blind zone for cramped mounting conditions
  • Easy installation and commissioning
  • Reliable detection of reflective objects, regardless of the material
  • High immunity to compressed air and plant noise
  • Interference- and maintenance-free system operation
  • Compatible with the housing of photoelectric models with a high switching frequency

Now available: Technology Guide Ultrasonic Sensors