History Of Flowmeter Development

As early as 1738, Swiss Daniel Bernoulli used the differential pressure method to measure water flow based on the first Bernoulli equation. Later, the Italian G.B. Venturi studied the use of venturi tubes to measure flow and published the results in 1791.
In 1886, the American Herschel applied the Venturi control to become a practical measuring device for measuring water flow.
From the early to the middle of the 20th century, the original measurement principles gradually matured, and people no longer limited their thinking to the original measurement methods, but began a new exploration.
In the 1930s, there was a discussion of the method of measuring the flow rate of liquids and gases with sound waves, but the method of measuring the flow rate with sound waves did not make much progress until the Second World War, and it was not until 1955 that the Maxson flowmeter with the acoustic cycle method was introduced to measure the flow rate of aviation fuel.
After the 1960s of the 20th century, measuring instruments began to develop in the direction of precision and miniaturization.
With the rapid development of integrated circuit technology, ultrasonic (wave) flowmeter with phase-locked loop technology has also been widely used, and the wide application of microcomputer has further improved the ability of flow measurement, such as laser Doppler flowmeter application of microcomputer, can handle more complex signals.