Measuring principle of pipeline flow meter

Abstract: The information on the measurement principle of the pipeline flow meter is provided by the excellent manufacturers of flow meters and flow meters. Tdown is the propagation time of the sound beam in the reverse direction T=Tup Tdown Let the speed of sound in the static fluid be c, the speed of fluid flow is u, and the propagation distance is L, when the sound wave is in the same direction as the fluid flow (ie, the direction of the flow) , its propagation speed is c+u; otherwise, the propagation speed. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the details of the article on the measurement principle of pipeline flowmeters. Tdown is the propagation time of the sound beam in the opposite direction ΔT=Tup–Tdown assumes that the speed of sound in the static fluid is c, the speed of fluid flow is u, and the propagation distance is L. When the sound wave is in the same direction as the fluid flow (that is, the direction of the flow), its propagation speed is c+u; otherwise, the propagation speed is c-u. Two sets of ultrasonic generators and receivers (T1, R1) and (T2, R2) are placed at two places separated by L, respectively. When T1 transmits ultrasonic waves in the forward direction and T2 in the opposite direction, the time required for the ultrasonic waves to reach the receivers R1 and R2 respectively is t1 and t2, then t1=L/(c+u); t2=L/(c-u) In the pipe, the flow velocity of the fluid is much smaller than the speed of sound, that is, c>>u, so the time difference between the two is ▽t=t2-t1=2Lu/cc. It can be seen that when the propagation velocity c of the sound wave in the fluid is known, the flow velocity u can be obtained as long as the time difference ▽t is measured, and then the velocity u can be obtained. Find the flow rate Q. The method of measuring flow using this principle is called the time difference method. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Measuring principle of pipeline flow meter'

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