Patent ID: 11860147
Assignee: UNIVERSITA' DI PISA
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A device for determining the real evapotranspiration of a vegetated surface of a soil, the device comprising:
a porous evaporator, at least one portion of which has resistance to a water vapor flow depending on a parameter of the porous evaporator, the porous evaporator having an upper surface exposed to the atmosphere,
a tank of liquid water underlying said porous evaporator to which said tank is connected by a suction tube, and provided with a meter for measuring water level,
a sensor for measuring a soil humidity value, and
a CPU that controls said parameter on which the resistance to the water vapor flow through said porous evaporator depends, in dependence on the soil humidity value detected by said sensor.