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The working principle of ultrasonic water meters
What is the working principle of an ultrasonic water meter?
The ultrasonic water meter uses the time-difference method to measure flow rate: an ultrasonic transducer is installed upstream and downstream of the measurement channel (pipe section) to transmit and receive ultrasonic signals to and from each other.
Because the ultrasonic signal is superimposed on the flow signal, the propagation speed of sound waves differs upstream and downstream. Consequently, the travel times of the ultrasonic signals transmitted through water by different transducers also vary. By measuring this time difference, the fluid’s flow velocity can be calculated and then converted into a flow rate, thereby enabling flow measurement.
There are two sensors at the top of the flow tube. Transducer A transmits an ultrasonic signal to transducer B (downstream), while transducer B transmits an ultrasonic signal to transducer A (upstream). During transmission, there is a certain time difference between the downstream and upstream ultrasonic signals.
Given the calibrated pipe diameter cross-sectional area and the standard measurement pipe length, the flow rate of the flowmeter is calculated by the computing chip on the integrator.
Longzhida Company Successfully Hosted the Victory Parade Commemorating the War of Resistance.
Longzhida Company Successfully Hosted the Victory Parade Commemorating the War of Resistance.
Today is a day that every Chinese person should solemnly remember—the 80th anniversary of the victory of the Chinese People’s War of Resistance Against Japanese Aggression and the World Anti-Fascist War.
On July 2, Chengde Longzhida Company held a meeting with the Sino-German Institute. After thorough discussions between the two sides, Mr. Bai, General Manager of Longzhida Company, and the faculty team from the Sino-German Institute reached a consensus: Longzhida Company officially entrusted the Sino-German Institute to carry out the design and R&D work for a new type of ultrasonic water meter.
On May 30, Longzhida Company successfully held an exceptionally meaningful event titled “Welcoming the Eighth ‘National Science and Technology Workers’ Day’: Promoting the Spirit of Scientists.”
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