The micro direct scale soil evapotranspiration meter is developed by our company in the fields of modern electronic technology, soil physics, and microclimate. It is used to measure the transpiration and evaporation of farmland and groundwater-A more systematic and comprehensive standard experimental equipment developed and produced for soil water conversion. It studies the water consumption patterns of crops and the water transport and transformation patterns in SPAC systems by recording and analyzing the water cycle of the tested soil (undisturbed soil or artificially prepared experimental soil). The instrument adopts an advanced high-resolution weighing system, equipped with an intelligent data collector and signal sensor, which can simultaneously detect the small changes in water transpiration, evaporation, leakage and temperature of the measured soil over time. Corresponding parameters such as air humidity, lighting, precipitation, etc. are analyzed, processed, recorded, and stored in real-time online, achieving high-speed, accurate, and user-friendly data collection, greatly improving work efficiency and reducing labor intensity. Suitable for long-term monitoring of hydrological cycles in ecosystems such as farmland, grasslands, forests, and river wetlands.

System composition and overall structure

The complete system of the micro scale soil evapotranspiration meter can be divided into two parts: hardware and software, with a total of three components:

lMeasurement part: composed of soil box, weighing system platform, and supporting sensors, etc

lData transmission part: composed of data conversion module, amplifier, and power supply system, etc

lTerminal display part: composed of data collector, main controller, supporting software, and LCD screen, etc

Overall structure of micro direct scale soil permeameter