流量仪表是一种重要的能源计量器具,也是属于过程自动化装置中非常重要的一种仪表,在电力、石油、冶金等多个重要的国民经济领域都被广泛使用。本文首先对流量仪表在产品类型、计量原理、选型标准、影响因素等方面作出介绍;然后针对比较难以解决的小流量低压瓦斯、液化石油气等能源的流量测量问题,探索分析了实用、可行的选型方法。 Flow meter is an important energy measuring instrument, and also a very important instrument in the process automation device. It is widely used in many important national economy fields such as electricity, petroleum, metallurgy and so on. This paper first introduces the flowmeter in terms of product type, measurement principle, selection criteria, influencing factors and so on; and then for the relatively difficult flow measurement problems of low-pressure gas, liquefied petroleum gas and other low-pressure gas, explores the practical and feasible The selection method.