What is the working principle of ultrasonic flowmeter

The ultrasonic flowmeter utilizes the principle of low voltage and multi-pulse time difference, and uses high-precision and ultra-stable double-balanced signal differential transmission and differential reception digital detection technology to measure the sound wave transmission time in the downstream and upstream directions, and calculate the flow rate according to the time difference. Ultrasonic flowmeter has the characteristics of good stability, small zero drift, high measurement accuracy, wide range ratio, and strong anti-interference. Among them, the plug-in type and external clamp type ultrasonic flowmeter are widely used in various industries due to their advantages of convenient installation and high measurement accuracy. Clamp-on ultrasonic flowmeter Working principle of the ultrasonic flowmeter: When the ultrasonic beam propagates in the liquid, the flow of the liquid will cause a slight change in the propagation time, and the change in the propagation time is proportional to the flow rate of the liquid. At zero flow, both sensors take exactly the same amount of time to transmit and receive sound waves (the only technology that can actually measure zero flow), and when the liquid is flowing, the travel time of the sound wave in the upstream direction is longer than the sound wave travel time in the downstream direction.

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