The Measuring Velocity Meter for Current in The River

Abstract

In Thailand, The Royal Irrigation Department is responsible for managing water availability. There are many instruments are used to read the data to obtain the needed hydrological data. The instruments that it has applied to measure the velocity of the tide are the flow velocity meters A-OTT C31 that compatible with the audio and numerical displayer Z 41-00. They have been used for 30 years, (1988 - 2018). the design of a flow velocity meter for tides in the river using Arduino was presented in this research. It was designed to use as a substitute for the audio and numerical displayer Z 41-00 that were broken.