Volume 11, Issue 2 (Journal of Control, V.11, N.2 Summer 2017)                   JoC 2017, 11(2): 55-62 | Back to browse issues page

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Orvatinia M, Gharibi A. Design and Fabrication of a Four-path Ultrasonic Flowmeter using the Time-difference Method. JoC 2017; 11 (2) :55-62
URL: http://joc.kntu.ac.ir/article-1-420-en.html
1- The Ministry of Communications and Information Technology, Tehran, Iran
2- , The Ministry of petroleum
Abstract:   (6879 Views)
A four-path ultrasonic flow meter was designed and fabricated by using of ultrasonic transmitter/receivers on an 8-inch pipe. By passing fluid through the flowmeter at a controlled rate, the velocity was measured in different layers using the time-difference method. Fluid flow rate was estimated by Gauss-Legendre numerical integration method and applying of the engineering approximation. By comparison of the results with the actual measurement done by a calibrated reference flow meter, the accuracy of the system was tested at various flow rates. It also was compared with the measurement of an equivalent one-path ultrasonic flowmeter, and the measurement errors were calculated. The test result represented that, the average error of measurement is less than 3% at the speeds of 0.5 m/s and more. The average error was more than 15% at the speeds below 0.3 m/s. The measurement error of the one-path flowmeter was 20% more than that of four path one.
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Type of Article: Research paper | Subject: Special
Received: 2016/11/14 | Accepted: 2017/05/14 | Published: 2017/07/9

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