Specification device for water status of soil, and method for same
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United States of America Patent
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May 10, 2016
Grant Date -
May 30, 2013
app pub date -
Jun 14, 2011
filing date -
Jun 17, 2010
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Abstract
Contacting a pair of electrodes with soil, applying an alternate current input electric signal to one of the pair of electrodes, comparing a phase of an output electric signal from the other of the pair electrodes with a phase of the input electric signal; and determining the concentration of the ionic solute included in the solvent according to a difference of the phases. The difference of the phases is not dependent on the water content. An electrical conductivity is proportional to a water content and ion concentration, thereby, the water content of soil is available according to the measured electrical conductivity, while determining the ion concentration.
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