Water meter structure and measuring principle

Abstract: the water meter structure and measuring principle of information produced by excellent flow meter, flow meter manufacturer to offer you the quotation. 1 battery power ultrasonic water meter characteristics and measuring principle and installation requirement of 9 y) 1. 1 meter characteristics of battery power ultrasonic water meter medium velocity range 0. 01 ~ 32. Accuracy (00 m/s, 0. 5 to 1) , no any activity of mechanical parts, no pressure loss and wear, has the measurement precision. More flow meter manufacturers choose model price quote you are welcome to inquire, here is water meter structure and measuring principle, the article details. 1 battery power ultrasonic water meter characteristics and measuring principle and installation requirement of 9 y) 1. 1 meter characteristics of battery power ultrasonic water meter medium velocity range 0. 01 ~ 32. Accuracy (00 m/s, 0. 5 to 1) , no any activity of mechanical parts, no pressure loss and wear, with precision don't change for a long time and stable running, reliable characteristic, users do not need to set parameters, can install at any Angle. Standard single battery can work continuously for six years, optional battery can work continuously for more than 10 years. Atc state automatically enter power saving mode, full tube state into normal measurement mode automatically. Water meter structure and measuring principle of battery power ultrasonic water meter measuring principle is the use of ultrasonic transducer ultrasonic and its spread in the water, sound waves in the water, the downstream direction transmission speed increases, reverse flow direction is reduced, the same propagation distance have different propagation time, when the ultrasonic wave propagation in flow water produce speed difference, the speed difference is proportional to the velocity of water. Water meter by the transducer, circuit and flow, according to the cumulative system composition, such as ultrasonic transmitting transducer converts electrical energy into ultrasonic energy, and launch it to the flow in the body, the receiver, the received ultrasonic signal amplified by electronic circuit and converted to represent the flow of electrical signal display and integrating supply, flow measurement was realized. Ultrasonic flowmeter 1. 3 meter installation and application note w5 ~ ultrasonic meter, want to choose the part of the uniform fluid flow field distribution, ensure adequate straight section length and the speed of the fluid to form stable distribution. General requirements before the straight pipe length is 10 times the pipe diameter, the straight pipe length is 5 times the pipe diameter. In addition, try to stay away from the machine pumps and valves, if organic pump, former straight pipe length is 50 times the pipe diameter, if there is a flow control valve, former straight pipe length is 30 times the pipe diameter, if straight pipe length can not meet the requirements, measurement accuracy will be reduced. 一) Pipe parameters. Ultrasonic water meter installed on the old line, be sure to get the parameters of the pipeline accurately, such as pipe diameter, wall thickness, etc. , to ensure accurate measurement results. b） Installation method. As the air bubbles and impurities in the pipeline have reflection and the attenuation of ultrasonic signals, to make a big measurement error, when installed so must choose the correct installation. Ultrasonic water meter in inclined and horizontal pipe installation, should be installed level, can make bubbles together above the pipe, so big impurities flow across the bottom of the pipe, as far as possible make ultrasonic water meter probe into horizontal and 45 # Angle range. In addition, ultrasonic water meter installation site should have certain back pressure, ensure that the pipe filled with fluid, no air bubbles or less bubbles to ensure the accuracy of measurement. Signal strength and signal goodness of inspection. Signal strength said probe signal intensity, upstream and downstream signal goodness of said two transmission direction of signal peak, will help the judge the fine degree of the received signal. ） Transport time and transport time of inspection. Ultrasonic transmission time said the average transmission time, upstream and downstream transmission time said ultrasonic transmission time lag. The two signals is the main basis of ultrasonic water meter calculation velocity, especially the transmission lag zui reaction ultrasonic water meter is stable. If the two signals is not stable, should check whether appropriate, sensor probe installation points set data is correct. e) Application note. Installation is unreasonable is the main reason for the ultrasonic water meter does not work. To determine the need to consider the location when the installation, in addition to guarantee enough, downstream straight pipe, especially pay attention to the transducer as far as possible to avoid a frequency conversion governor, pump and the occasion of pollution such as power supply. Timely nuclear school is to ensure that the ultrasonic accurate measurement: the premise of adhering to the one-china principle to a school, namely ultrasonic water meter for each new installation nuclear school during debugging, make sure to choose a good, installed, measurement standard; To run online ultrasonic water meter flow mutation occurs, use the portable ultrasonic flowmeter for nuclear, timely find out the reason of this flow of mutation is sure ultrasonic water meter failure or flow has changed.

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