Development of high-precision automatic evaporation monitoring device

This study proposed a novel liquid level measurement mode, which applies high-precision liquid level measurement sensors to the measurement of water surface evaporation. Through a data acquisition controller, the entire process of monitoring water surface evaporation, including changes in evaporator water level, rainfall, replenishment, and drainage, is collected, recorded, and transmitted, achieving fully automatic online and accurate measurement of water surface evaporation. The device adopts automatic replenishment and drainage mode and advanced sensing measurement technology, which can effectively avoid the observation error caused by overflow and rainfall. According to the application data of the device in a hydrological station, the device has a higher qualified rate than the artificial observation of daily evaporation, which can replace the artificial observation of water surface evaporation method and improve the efficiency of hydrological monitoring.