The Meteo-Lysimeter precisely measures precipitation, eva­po­transpiration and leachate. For this, the Lysimeter weighs in the gram range a certain mass of soil with a defined surface over an extended period of time and supplies you with precise data of

• water input like rain, dew, frost or snow,
• water output by evapotranspiration and leachate, and
• dthe change of soil water content.

Together with additionally measured meteorological data you can develop water balance models and determine potential evapotranspiration (ET0).
 
The key benefits of the Meteo-Lysimeter are:
1. You receive highly resolved and precise data of precipi­tation, evapotranspiration and leachate by direct measure­ment of soil weight and water weight.
2. The “true“ field evapotranspiration is determined, which really takes place on the respective soil surface under certain climatic and water conditions.
3. Also leachate amount and composition are gained under field-identical conditions, and stored for later analysis inside the easily accessible service well.
4. Precipitation is measured directly on the soil surface con­sidering real wind conditions, soil moisture and vegetation. A relatively large 1 square meter surface gives you the best possible precipitation data.
5. UMS Lysimeters supply information about the true water conversion processes taking place on the surface down to a selectable soil depth, with additional information about air humidity and temperature, solar radiation and wind.
 

Other advantages

• Field-identical water regime;
• Field-identical temperature regime in the Lysimeter;
• ET0 as continuously recorded reading calculated with the 12 cm grass cover algorithm;
• Connection to Ethernet, remote control by GSM or GPRS;
• An optional tool for snow measurement automatically offersadditional information about the water equivalent of snow;
• Standard Lysimeter height is 1.5 meters. If required a heightof up to 2 meters is available.
• The evapotranspiration determination is done by weightmeasurement, not by evapotranspiration models.

We configure the Meteo-Lysimeter according to your needs, take care of the complete installation of your station, and support you with extensive training and documentation.
 

Content of supply

• UMS Lysimeter cylinder with silicon carbide porous cups rake
• Precision weighing system
• 2 pcs. T8 Tensiometers for regulation and supervision
• Weighable 60 l leachate tank with controlled partialemptying to 40 l
• Enclosure MBR-1 with data logger DT80, reverse flow peristaltic pump and power supply unit
• Lysimeter concrete well shaft
• Service well shaft (Ø 2.35 m; height 2.3 m)
• Float switch pump with drainage system

Weather station including:

• RFT-2 air humidity sensor, calibrated at 97% rH
• Th2 temperature sensors: -20, -10, -5, +5, +50, +200 cm
• Thermal flux sensor in 20 cm
• GLOBAL pyranometer
• RM826 rain gauge
• 4 pcs. RS200 rain samplers
• A100-R wind speed sensor
• M2 mast with sensor mounts