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Conductivity Instrumentation for In Situ Measurement of Soil Salinity
Author(s) -
Enfield C. G.,
Evans D. D.
Publication year - 1969
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1969.03615995003300050044x
Subject(s) - transducer , conductivity , instrumentation (computer programming) , materials science , water content , moisture , electrical resistivity and conductivity , in situ , porosity , range (aeronautics) , platinum , metre , environmental science , soil science , composite material , geotechnical engineering , electrical engineering , geology , chemistry , meteorology , engineering , physics , computer science , operating system , biochemistry , catalysis , astronomy
A transducer has been developed which is capable of assessing, in situ , the electrical conductivity of soil water. The transducer is constructed of porous glass with platinum electrodes and operates over the entire field moisture range. The transducer is accurate to within 10% when measured with an associated soild state meter in a conductivity range of 1–20 millimhos/cm @ 25C and a temperature range of 5–45C. Typically, the time required to achieve 63% of equilibrium response, in aqueous solutions, is less than 2 hours.