Ultrasonic flow meter scale applied in agriculture?

Abstract: ultrasonic flowmeter scale applied in agriculture? Information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. As is known to all, China is an agricultural country, agricultural water conservancy engineering also has been the development of the national key object. The development of agriculture depends on water conservancy irrigation and therefore without water flow measurement. At present our country adopt zui measuring instrument is advanced. More flow meter manufacturers choose model price quote you are welcome to inquire, here is how ultrasonic flowmeter scale applied in agriculture? The article details. As is known to all, China is an agricultural country, agricultural water conservancy engineering also has been the development of the national key object. The development of agriculture depends on water conservancy irrigation and therefore without water flow measurement. At present our country adopt zui advanced measuring instrument is ultrasonic flowmeter, the speed area measurement method, measurement method is the use of ultrasonic flowmeter based on water flow channels of average flow velocity multiplied by the cross-sectional area, the water flow velocity is generally through in certain pipeline installation of ultrasonic flowmeter to measure. Measurement generally has three kinds: one is the velocity distribution law; The second is 0. 6 h method; Three is 0. 2H～0. 8 h method. Velocity distribution method is to use ultrasonic flowmeter between water surface and the bottom of the canal choose different points to measure the velocity, and then by the speed curve of the vertical surface of the measured points, according to the speed curve defined area is divided by the depth, calculate the average speed of water flow; 0. 6 h to measure the water below 0. 6 h deep single point velocity, and assumes that this value is the average of all the speed; 0. 2H～0. 8 h method of measurement is 0 under surface water. 2 h and 0. The flow rate of the depth of 8 h 2 o 'clock, this is the average of the two readings can estimate for average velocity value. The three measuring methods is the use of ultrasonic flowmeter measurement in a particular area at the average speed of water flow, choose the measuring results of different survey points may be different. European countries require when measuring at least five measuring points, and the United States believes that measure 2 points enough. The number of sounding depends on the width of the channel. Frequency sounding in Europe for 5 ~ 15, for 8 to 18 in the United States. Number of measurement error is by sounding and determined in the measurement of each time, the speed - Area of the average error is less than 6%. Flow measurement can also be used in the farmland irrigation using electromagnetic flowmeter. Ultrasound technology is by measuring across the channel to calculate the velocity of ultrasonic transmission time, transmitter and receiver points placed on the opposite side of the channel, the wave of the Angle between the path and in the direction of flow in 45 & deg; ~ 60度; Within the scope. Makes the geometrical relation between towards upstream and downstream direction of the sound pulse time lag. While the use of electromagnetic flowmeter was established using conductive current artificial magnetic field, then measured across the water on both sides of the synthetic measurement results. Electromagnetic flowmeter is generally composed of excitation spool and a pair of electrodes measuring system. Although ultrasonic flowmeter and electromagnetic flowmeter can be used in farmland irrigation water in flow measurement in the system, but in practical application, consider using the environment etc, most of the ultrasonic flowmeter is used for measurement. Above is all there is in this article, you are welcome to inquire me manufacturer flowmeter selection, quotation, etc.

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