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超声波流量计是一种非接触式测量仪表，由一次传感元件和二次显示仪表组成。它具有安装方便，无须对管道进行机械加工，不影响被测介质的流态，节约能源等优点。从管壁外测量管道内流动液体的流量是其它测量方法所不能及的特点，在大流量测量时其优点尤为明显。本文就时差法超
Ultrasonic flowmeter is a non-contact measuring instrument, consisting of a sensing element and secondary display instrument. It has the advantages of convenient installation, no need to machine the pipeline, does not affect the flow of measured medium, save energy and so on. Measuring the flow of liquid flowing inside the pipe from the outside of the pipe wall is a feature that can not be achieved by any other measurement method. This is particularly advantageous when measuring large flow rates. This article on the time difference method