文章介绍了一种适宜近岸表层水域中测流用的流速仪,该仪器为旋桨式,受波浪影响小,动态特性好,可供测量海洋、港湾、江河、湖泊、水库、河口不同深度下(含表层)水流的速度和方向。作者根据测流中的实际问题,就流速仪的动态方程及其特性进行研究,并对转子式流速仪在水流中使用的局限性进行了探讨。 This paper introduces a current meter suitable for the measurement of currents in surface water near the shore. The instrument is of propeller type. It has little influence on the waves and good dynamic characteristics. It can measure the depth of ocean, harbor, river, lake, reservoir and estuary at different depths (Including surface) the speed and direction of water flow. Based on the actual problems in the flow measurement, the author studies the dynamic equation of the flowmeter and its characteristics, and discusses the limitations of the rotor-type flowmeter in water flow.