人类为了开发利用海洋,对海流进行了长期的观测研究。从原始的漂流瓶,到遥控自记的海流计,已经发明创造了一百多种测流仪器。早期出现的海流计多是机械式的。厄克曼海流计就是纯机械式海流计之一。厄克曼海流计是一次性测量仪,为了能在海洋中长期连续观测并自记海流,苏联研制生产了一系列印刷海流计。 In order to exploit and utilize the sea, mankind has conducted long-term observational studies on the current. From the original drift bottle to the remote-controlled self-recording flow meter, more than 100 types of flow measurement instruments have been invented. The early occurrence of the current meter is mostly mechanical. The Erkeman current meter is one of the purely mechanical currents. The Urgman current meter is a one-time measuring instrument. In order to be able to continuously observe and record the currents in the ocean for a long period of time, the Soviet Union has developed and produced a series of printed current meters.