Seven-Rod Dielectric Sensor for Determination of Soil Moisture in Small Volumes
Proceedings , Volume 15; doi:10.3390/proceedings2019015049
Abstract: The paper presents the performance of a seven-rod dielectric probe for determination of soil dielectric permittivity using FEM simulations as well as FDR and TDR measurements. The volume of the sensitivity zone of the tested probe was assessed basing on the simulations and measurement in liquids. The probe was also tested in two soils, sandy loam and silt loam. The obtained results suggested that the seven-rod probe can be used to accurately measure the dielectric permittivity spectrum in a small sample volume of about 8 cm3 in a frequency range from 20 MHz to 200 MHz.
Keywords: TDR / dielectric spectroscopy / FDR
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