EVAPRO Integrated Smart Automated Evaporation Sensing System Class A is a next-generation automated US Class A evaporation monitoring system developed for continuous, unattended measurement of open-water evaporation at hydrological and meteorological stations. Designed for environmental monitoring, the system replaces labour-intensive manual observations with a high-accuracy, IoT-enabled monitoring platform that improves data reliability, operational efficiency, and maintenance management. It integrates a stainless-steel US Class A evaporation pan with an innovative compact stilling well housing a non-contact laser water-level sensor capable of measuring water-level variations with up to 0.01 mm resolution, providing highly stable and repeatable measurements without mechanical wear. The system incorporates intelligent automation features, including scheduled automatic water replacement using electronically controlled solenoid valves to reduce algae growth, minimize contamination, and maintain measurement consistency. An integrated DAQ system performs real-time data acquisition, local storage, and cloud transmission for continuous monitoring, remote diagnostics, and historical data analysis. A transparent manual ruler enables rapid visual verification and field calibration without interrupting operation. EVAPRO is powered by a standalone solar energy system, enabling long-term deployment at remote locations with minimal maintenance requirements. Its robust stainless-steel construction, hardwood resak support platform, and fauna-protection design ensure reliable operation under harsh tropical environments. The modular stilling well assembly can be easily attached or detached, simplifying transportation, installation, cleaning, and servicing. The system complies with international hydrological monitoring practices based on the WMO US Class A evaporation standard and supports applications including irrigation scheduling, drought assessment, reservoir management, climate studies, and water-resources planning. By integrating precision laser sensing, automated maintenance, intelligent telemetry, and user-friendly verification features into a single platform, EVAPRO significantly improves evaporation data quality while reducing field visits, operating costs, and long-term maintenance, making it an ideal smart monitoring solution for government agencies, research institutions, and environmental monitoring networks.
