Flow measurement is an important part of scientific measurement

Flow measurement is an important part of scientific measurement, and water flow measurement is one of the most important content. It plays an important role in trade settlement, energy measurement, process control, and environmental protection. In recent years, with the global scarcity of energy and water resources, with the launch of key national projects such as the South-to-North Water Diversion, and with the continuous improvement of legal measurement, the society's requirements for water measurement have become higher and higher. Therefore, researching and exploring water meters or flow meters suitable for various use conditions in our country under the new situation, expanding their flow measurement range, extending the working life of water meters, and improving the degree of intelligence of the meters have become the unremitting pursuit of researchers in the water meter industry.

Water meter is the most widely used flow meter with simple structure among various flow meters, and it is also the most important legal meter. According to the latest international standards and international recommendations, water meters are defined and divided according to their usage, that is, any flow meter with cumulative flow display used to measure potable cold water in closed pipelines is a water meter, which includes us In the usual concept, there are flow meters based on mechanical principles, such as rotary-wing water meters, screw-wing water meters, and piston water meters, as well as flow meters based on electronic or electromagnetic principles, such as electromagnetic flow meters, ultrasonic flow meters, and so on. In addition, the water meter with electronic device is a water meter with various auxiliary devices added to the mechanical water meter to meet the needs of management and control, such as various prepaid water meters and electronic remote water meters. Overall, the connotation of the water meter is much richer than before. In actual work, with the development and maturity of electronic technology, electronic water meters and water meters with electronic devices are playing an increasingly important role. The commercialization of water resources, the development of the "one household, one meter" project, and the implementation of water-saving policies such as stepped water prices have further promoted the development of such water meters.