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Working principle of ultrasonic water meters-S.H.Meters

Views: 2     Author: Site Editor     Publish Time: 2023-05-18      Origin: Site

Working principle of ultrasonic water meter


 Ultrasonic water meter is a new type of water meter that detects the time difference caused by changes in velocity during the propagation of ultrasonic sound beams in water, analyzes and processes the flow rate of the effluent, and further calculates the flow rate of the effluent. What is the working principle of an ultrasonic water meter? What are the advantages and disadvantages of ultrasonic water meters?

The ultrasonic water meter adopts the time difference method to measure the flow, that is, a ultrasonic transducer is installed at the upstream and downstream of the measuring channel (pipe section) for mutual transmission and reception of ultrasonic signals.


 Due to the superposition of ultrasonic signals and water flow signals, the propagation speed of sound waves varies between forward and backward flow. Therefore, the operating time of ultrasonic signals emitted by different transducers in water varies. By measuring the difference in time, the flow velocity of the fluid can be calculated, which can then be converted into flow rate to achieve flow measurement.

There are two transducers at the top of the flow tube. The A transducer emits an ultrasonic signal (downstream) to the B transducer, while the B transducer emits an ultrasonic signal (upstream) to the A transducer. The upstream and downstream ultrasonic signals form a certain time difference during transmission,


 Using the calculation chip on the integrator, calculate the flow rate of the meter based on the calibrated cross-sectional area of the pipe diameter and the length of the standard measuring pipe.

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