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Pepperl+Fuchs ultrasonic sensors offers precise measurements despite environmental influences

Photo by Pepperl+Fuchs GmbH

Photo by Pepperl+Fuchs GmbH

Ultrasound, sound beyond what humans can hear, has been a part of nature since time immemorial. Mammals such as bats and dolphins use ultrasound to find their way around and catch prey. Today, humans use ultrasound technology in the most varied fields, such as in medical technology or in the automotive industry as a parking assist system. In addition, ultrasonic sensors are used across all industrial sectors. Against this backdrop, Pepperl+Fuchshas over 20 years of experience and is one of the pioneers of this sensor technology.

The Pulse of Automation

The benefits of ultrasonic sensors are readily apparent. Regardless of color and surface, an object can be detected with millimeter precision. Dust and dirt do not have a detrimental effect on the measurement result. The high-frequency vibration of the ultrasonic transducer surface simply shakes off any dirt.

These benefits can be easily explained by the measuring principle: An ultrasonic transducer, which is essentially the combination of piezoceramics and an acoustic adaptation layer, is stimulated in transmission mode by a high-frequency burst packet or single current pulse. The transducer then operates as a microphone. The received acoustic pulse creates a millivolt-level signal at the piezo that is then converted to a distance value by the microcontroller. In this operating mode, the strength of the received signal has no bearing on the measurement.

Suitable For Any Application

Pepperl+Fuchs ultrasonic sensors are ideal for a wide range of applications due to their robust and precise measuring capabilities. They can detect a wide variety of materials, are not influenced by problematic surfaces, are generally immune to environmental influences, and deliver measurement results that are accurate to the millimeter. And simple parameterization—if  the application requires it—enables measuring ranges from a few centimeters up to 10 m. From the most basic, to the most highly complex process control requirements, ultrasonics are the sensors for all applications.

For more information, please visit http://www.pepperl-fuchs.com.