Soil Water Potential Sensors

(Electronic interpretation of the water available to plants)

Water potential describes the force that drives water movement. It is the most fundamental and essential measurement in soil physics. A water potential sensor is a solid-state electrical resistance sensing device that is used to measure soil water tension. As the tension changes with water content the resistance changes as well. That resistance can be measured using a water potential Sensor. The sensor consists of a pair of highly corrosion resistant electrodes. A current is applied to the sensor to obtain a resistance value. The readout unit or datalogger correlates the resistance to centibars (cb) or kilopascals (kPa) of soil water tension.

Tensiomark By Ecotech

Gypsum Block By SoilMoisture


Matric potential sensor covering complete measuring range (pF 0-7; 1-10.000.000 hPa). Is maintenance-free and frost resistant. Unlimited measuring range (no measurement gaps in summer due to dehydration).Fast response to moisture changes.Measurement of soil temperature (only in SDI-12-mode)

Gypsum Block

A gypsum block, also known as a gypsum soil moisture sensor or gypsum moisture block, is a type of instrument used for measuring soil moisture content in agricultural and environmental applications. It operates based on the principle of electrical resistance and is a widely used tool for monitoring soil moisture levels. Click for more details.