The Demonstration Lysimeter, "PL", is a unit designed by EDIBON to measure the evapotranspiration using the water balance method.
The Demonstration Lysimeter, "PL", is a unit designed by EDIBON to measure the evapotranspiration using the water balance method.
The unit consists of two independent lysimeters that allows the user to perform two practical exercises at the same time. Water losses or increases of the analyzed soil can be measured by two inclined-tube manometers.
Each lysimeter consists of a square-based vessel with a hydraulic device inside that, connected to the graduated tubes, allows the user to observe changes in the water level.
There is a vessel on each hydraulic device. Each vessel is filled with soil to plant the vegetation in order to analyze their evapotranspiration
Two lids are included to cover the top of the vessels, so water losses by evaporation are reduced and only transpiration is studied. ,
There is a tank and a pipe to fill the hydraulic device with water so that it transfers the pressure exerted by the weight of each vessel to both graduated tubes.
Besides, a set of weights to calibrate the manometric tubes in function of the weight change to which the hydraulic device is subjected are supplied with the unit.
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