Unit designed to study and understand the water retentivity principles, in terms of soil suction, as well as for the derivation of characteristic curves of the ground´s humidity.Basically it is composed by:- Suction system, composed by a water circuit (including a water tank), that is impelled by a pump that makes the water flow through a water jet pump, that sucks the water of the soil container. It has a pressure meter.- Soil container, it is composed by a cylindrical tank that contains the wet sand. Inside of the sand you must introduce the soil samples and the water volume meters. It also has a pressure meter and an air inlet (to pressure the environment).
This unit is available as computer controlled
1.- To understand the relationship between water retentivity and soil.
2.- To understand the basic principles of water retentivity in terms of soil
3.- Derive soil moisture characteristic curves for several soils
4.- Effect of the atmospheric pressure.suction.