Welcome to lysimeter.com!

Purpose of this facility

to determine reference evapotranspiration (Eto)

Lysimeter type

WEIGHABLE MONOLITHIC LYSIMETER

Operating since

2006

Number of lysimeters

1

Size classification

standard

Exact size

1 m² x 1 m depth, cylindrical

Building material of container

Stainless steel

Feature of lysimeter bottom

Several suction cups in a filter layer

Lysimeter cellar (material)

at this type: measuring pit; lysimeter cellar nearby (concrete)

suction-controlled lysimeter

yes

Weighing equipment

3 load cells; precision: 0.01 mm

Seepage water determination

Suction cups; Weighing

Soil fraction(s)

Loamy sand

Soil type

Dystric Cambisol

Soil thickness in m

ca. 1 m; fine earth: 20 cm

Vegetation and cultivation

Grassland (mulch); no fertilizer used since 1987

Probes installed

Tensiometers, suction cups

Data logger; server, data base

yes

Other details (data formats etc.)

Datalogger: DT80, data are transmitted to the serve in the lysimeter cellar; data format: XLS and CSV

Further investigations or equipment

Parameters measured: lysimeter weight (1 min), seepage water (1 min), matric potential in lysimeter and undisturbed soil (10 min); rotating direction of the pump and time of rotating (sec/10 min)

Meteorological parameters

Separate weather station (METEOLY) at this lysimeter type measures temperature, precipitation, relative humidity, global radiation and wind velocity in in 2 m above surface.

Remarks

Matric potential in the indisturbed soil and in the lysimeter (in 95 cm depth) are equilibrated by a pump.