DEVICE TO CONTROL WATER BALANCE OF SOIL Russian patent published in 2016 - IPC G01N33/24 A01G25/16 E02D1/06 

FIELD: machine building.

SUBSTANCE: lysimeter includes a vessel with a monolith of soil hydraulically connected with a level control vessel, a release unit connected to a water supply source, a control unit with an electro-switching circuit and connected to it electromagnetic sensors of water levels in a level control vessel. Source is made as a vessel with a level sensor connected to the control unit and connected to it a pipeline with a hydraulic pump connected to the control unit. Level control vessel is made from a closed reservoir divided in the middle part by a partition, in its lower part there is an additional chamber. Lower part of the chamber has a filtering coating from a geotextile material arranged above the screen. Tray of the chamber is hydraulically connected to a vessel with the soil monolith. On the partition there is a pump arranged above. Spool-valve mechanism is arranged able to be connected with the chamber cavity with atmosphere and with the control input is connected through an electromagnet with a software unit, inputs of which are connected to a level sensor, and output - with the pump. Unit is equipped with devices of setting duration of periodic opening and closing of the spool valve.

EFFECT: technical result is reduction of material consumption.

1 cl, 2 dwg, 1 tbl