My project is to detect the amount of particle/density flowing inside pipe using ultrasonic method. Is it possible or is there any other way to measure the amount of sand flowing?
Hello Wan Muhammad Syazwan Wan Musa ,
If your ultrasonic measurement depends on sand particles impact on the walls of the pipe, then the frequencies generated by such impacs are in the order of 100 to 500kHz. You can refer to :
Brown, G.K., Davies, J.R., Hamblde, B.J. 2000. Solids and Sand Monitoring- An Overview, NACE International, 2000, Houston, Texas, NACE-00091
Also there are commercial passive ultrasonic sensors for the oil and gas industries:
https://www.clampon.com/products/
https://www.aquip.com.au/products/clampon-dsp-acoustic-sand-detector/
And if you are interested on the computational model for sand contents to develop a contactless sand production instrument:
https://openpetroleumengineeringjournal.com/VOLUME/10/PAGE/1/FULLTEXT/
Regards
Thank you for the answers.
Martin, such product is very expensive due to the application is mostly used for oil&gas industry. For now, it is best for me to build my own sensor to detect the particle and hopefully can discover new things through research.
Hello Wan,
I think that ultrasound on pipes you may couple with help of a delay line and oil or water for the interface, depending on the chemical composition of pipes. It would be better to measure in the far field. Then you can compare the result with another position on the same material, which is not doted by sand flowing. With a periodic inspection you are able to find the changes of acoustic characteristics like attenuation, ultrasound velocity and frequency drift.
Another way is the use of two transducers to carry out the guided wave method.
I hope this will help.
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