Function

The power needed by the roots to extract water from the soil. In dry soil, water is sucked from the tube through the ceramic tip and sucked back again after watering. This causes different vacuum pressures in the tube which can be measured and displayed at the push of a button.

Very Easy to use

Low values (below 50 mbar) = wet soil

High values (above 200 mbar) = dry soil

The drier the soil, the higher the value!