A Two-Element Ceramic Sensor for Matric Potential and Salinity Measurements
1978
Scholl, David G.
A two-element ceramic sensor was developed to produce optimum electrical response both to soil water matric potential and salinity. A spring-loaded housing was developed for the elements for either drill-hole or pit-face placement. The sensors were calibrated under various matric potential, salinity, and temperature conditions. An initial field test with 72 sensors was conducted under irrigated coal mine spoil conditions. Laboratory and field results indicated reasonable instrument precision over a wide range of matric potential and salinity. The correlation between sensor output and water content in the field was best where the mean of several sensors was used.
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