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Introduction to the development of flow meters

The development of flow measurement can be traced back to ancient water conservancy projects and urban water supply systems. The ancient Roman Caesar era has used orifice plates to measure the amount of drinking water for residents. Around 1000 BC, ancient Egypt used the sputum method to measure the flow of the Nile. The water level of the famous bottle in the Dujiangyan water conservancy project in China is used to observe the water level. In the 17th century, Toceffi laid the theoretical foundation of the differential pressure flowmeter, which is a milestone in flow measurement. Since then, prototypes of many types of meters for flow measurement in the 18th and 19th centuries have begun to take shape, such as helium, tracer, pitot tube, venturi, volume, turbine, and target flow meters. In the 20th century, the demand for flow measurement in the process industry, energy metering, and urban public utilities increased sharply. /|1, prompting the rapid development of instruments, the rapid development of microelectronics technology and computer technology has greatly promoted the upgrading of instruments, and the new flowmeters have mushroomed. Emerged. So far, hundreds of flow meters have been reported to be on the market, and many difficult problems in field use are expected to be solved. Flowmeters can now be divided into electromagnetic flowmeters, vortex flowmeters, orifice flowmeters, special flowmeters, etc.

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