Flowmeter plays an important role in the scientific research of national economy and national defense construction. This paper introduces the types and principles of current mainstream flowmeter, analyzes their advantages and disadvantages and application scope, looks forward to the development trend of flow detection technology, analyzes the development direction of flowmeter in the future, and puts forward corresponding suggestions.

    As the embodiment of target or condition attribute, information is represented by some kind of data signal. The measurement of hydrodynamics fluidity is a complicated measurement method for the main parameters of civil and industrial production.

    With the development trend of industry in our country, higher and higher regulations are put forward for the measurement of fluid fluidity.

    In recent years, because of the emergence of the intelligent management system of air pollution and environmental protection and energy saving, the quality and total amount of on-the-spot information, whose processing technology is the key, are increasingly concerned. Only to achieve accurate measurement, can we achieve energy saving and energy consumption has a foundation. As a key parameter in social economy, flow detector is more and more necessary.

    With the development of industrial technology, modern flow measurement technology changes with each passing day. According to various measuring principles, more than 100 kinds of flow meters are produced and used. According to the division of technology, the existing flowmeter can be divided into two categories: traditional flowmeter and new technology flowmeter.

    Traditional flowmeter mainly includes orifice flowmeter, nozzle flowmeter, venturi flowmeter, volumetric flowmeter, turbine flowmeter, electromagnetic flowmeter, rotameter, etc.