LYSIMETER Russian patent published in 2019 - IPC G01N33/24 

FIELD: measuring equipment.

SUBSTANCE: invention relates to a lysimeter, comprising tank (1) with soil monolith (2) communicating with a vertically mounted container (6), tray (5) and water level control elements, wherein vertically installed container (60) is divided into measuring tank (9) and drain well (10) by partition wall (80), in middle part of which there is hole (11) equipped with device for water discharge in form of siphon (15), descending branch of which is brought into drain well (10) towards the head of discharge pipe (17), wherein siphon (15) is fixed inside opening in shield 12. Is made with possibility of vertical fixed movement relative to opening in partition (8), wherein vertically installed container (6) is hydraulically communicated with container (1) tray (5) with soil monolith (2), cover (24) with graduated post (25) in the form of a scale and adjusting device in the form of screw (13), telescopic discharge branch pipe (16) with lower end, outlet hole of which is located in drain well (10) below discharge pipe outlet (17), at that, has siphon (15) start-up mechanism, telescopic pipe (16) is rigidly fixed in side wall of drain well (10), and siphon (15) descending branch can be fixed by means of screw (13) relative to drainage well (10) of the telescopic discharge pipe (16). Lysimeter is characterized by that it is equipped with movable vertical pipe (18) with membrane valve (20) with control aeration tube (21) and siphon (15), neck of which is connected by means of connecting pipe (23) to measuring vessel (9), wherein movable vertical pipe (18) is rigidly connected to movable shield (12), arranged in partition with adjusting device in form of screw (13), which is equipped with pointing arrow (26) opposite calibrated in accordance with irrigation period by taking into account biological characteristics of soil monolith (2) crops, is equipped with post (25) installed on cover (24) in form of a scale consisting of multicolored luminous counting and separating strips.

EFFECT: lysimeter has higher reliability and accuracy.

4 cl, 1 dwg