%0 Journal Article
%A Orvatinia, Mohammad
%A Gharibi, Abbas
%T Design and Fabrication of a Four-path Ultrasonic Flowmeter using the Time-difference Method
%J Journal of Control
%V 11
%N 2
%U http://joc.kntu.ac.ir/article-1-420-en.html
%R
%D 2017
%K flow meter, ultrasonic, time difference method, method of Gauss-Legendre,
%X 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.
%> http://joc.kntu.ac.ir/article-1-420-en.pdf
%P 55-62
%& 55
%!
%9 Research paper
%L A-10-606-1
%+ The Ministry of Communications and Information Technology, Tehran, Iran
%G eng
%@ 2008-8345
%[ 2017