Development History Of Flow Meters

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. The Venturi study used a Venturi tube to measure flow rate and published the research results in 1791.
In 1886, American Herschel used a Venturi tube to create a practical measuring device for measuring water flow.
In the early to mid-20th century, the original measurement principles gradually matured, and people no longer limited their thinking to the original measurement methods, but began new explorations.
In the 1930s, a method for measuring the flow rate of liquids and gases using sound waves emerged. However, significant progress was not made until the Second World War, when the Maxon flowmeter, which applied the acoustic circulation method, was introduced in 1955 to measure the flow rate of aviation fuels.
After the 1960s, measuring instruments began to develop towards precision and miniaturization.
With the rapid development of integrated circuit technology, ultrasonic (wave) flow meters with phase-locked loop technology have also been widely used. The widespread application of microcomputers has further improved the ability of flow measurement. For example, laser Doppler flow meters can process more complex signals after being applied to microcomputers.