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Measurement of Dielectric Properties for Moisture Determination of Dextrins
Author(s) -
Boruch M.,
Brzeziński S.,
Palka A.,
Pierzgalski T.
Publication year - 1988
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.19880401007
Subject(s) - dielectric , voltmeter , capacitance , water content , capacitor , moisture , vibrator (electronic) , constant voltage , materials science , composite material , analytical chemistry (journal) , voltage , chemistry , acoustics , electrical engineering , optoelectronics , chromatography , physics , electrode , geotechnical engineering , engineering
Dielectric properties of dextrins were investigated. The experiments performed enabled to determine the relationship between the moisture content of white and yellow dextrins, the capacitance of the measuring capacitor filled up with dextrins and the coefficient of dielectric losses tg ± measured for various frequencies of applied voltage. A measuring capacitor for quick measurement of moisture of powdered materials was constructed. To ensure constant density of material in the measuring region, an electromagnetic vibrator was employed. The sensor was used for moisture determination of white and yellow dextrins. The results obtained showed the linear relationship between the moisture content and the voltmeter readings. Based on this relations, a measuring system for moisture determination of dextrins was designed and built.