Precise Approach for Distance Measurement Using Ultrasonic Sensor Technology

Distance measurements can be challenging without the right tools. But where precision and speed matter, traditional measuring techniques won’t suffice. That’s where newer technologies, such as the ultrasonic sensor, come in. It can simplify proximity sensing and identify levels reliably and accurately using ultrasonic sound waves and carefully selected transducers.


Ultrasonic sensors are currently the most reliable, non-destructive means to take measurements for material thickness, welding inspection, and corrosion mapping. They can be used over various materials, including steel and composites like fibreglass and carbon fibre. The sensor relies on a transducer to deliver and receive ultrasonic pulses, which provide information on the proximity of an object. With high-frequency sound waves, you can measure the distance between boundaries based on how long the echo patterns can travel to and from the transducers.



How it works


An ultrasonic sensor generates a high-frequency sound wave that humans cannot hear. The transducer works as the microphone to send and take ultrasonic sounds. Most sensors require only one transducer to generate a pulse and retrieve the echo.


Given how they work, ultrasonic sensors can help detect clear objects more effectively than infrared sensors, especially with presence detection. That’s because ultrasonic technology is more effective at detecting objects, no matter the material, surface, or colour. However, it’s not recommended for very soft materials that can absorb sound, like wool. But it’s still a reliable option for detecting transparent items and other objects that can’t be measured by other optical technologies.



Measurement tips


Ultrasonic sensor technology may be reliable under many circumstances, but careful use and correct transducers are necessary to improve success and avoid inaccurate results. Here are a few measurement tips to help you make the most of ultrasonic sensing:



  • If using two or more sensors, ensure they are properly connected to avoid interference or crosstalk.
  • Avoid disrupting ultrasonic signals by removing any obstructions, like dirt, ice, snow, and other forms of condensation.
  • Choose an ultrasonic probe based on what you’re measuring to ensure accurate results.
  • Use an accurate ultrasonic device with your transducers. There are flaw detectors, thickness measurement devices, and PA/TOFD sets.



Get the best transducers and equipment now!


Discover the latest and most advanced ultrasonic sensor devices and transducers at PCTE Industrial, a leader in providing non-destructive testing equipment in Australia. A knowledgeable team is ready to chat on their website or provide a quote.


About the author:


PCTE Industrial is a specialist in the sale and hire of industrial non-destructive testing (NDT) equipment. PCTE INDT is a branch of PCTE that has been serving in the NDT industry since 2008. We offer a range of INDT equipment that covers the bread-and-butter applications but also adds some exciting technology. Our range covers devices for Ultrasonic Testing (UT), Eddy Current (ET), Magnetic Particle (MT), Dye Penetrant (DT) and Visual Testing (VT).



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