 The Soil Analysis Sensor (including a soil moisture sensor) is one of the most modern sensor elements / probes for the accurate monitoring, recording and analysis of moisture, electrical conductivity and surrounding temperature in soils and other granular media.
This Universal Sensor (extension element) for our flexible data loggers (e.g. Thermofox Universal, Universal HUB, Materialfox,...) was developed especially for the analysis of granular substances like mineral soils. The probe is equipped with three highly-sophisticated sensor elements all operating simultaneously.
The moisture content of the soil (VWC = Volumetric Water Content in %) is determined by measuring the dielectric permittivity / dielectric constant ε = 1 (air) to ε = 80 (water) with a soil moisture sensor. This physical property of the soil varies greatly depending on the water content and is recognised worldwide as the standard for measuring the moisture in the soil and in other materials. The dielectric permittivity is measured using capacitive frequency domain technology at a frequency of 80 MHz.
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