Title :
A new density-independent function for microwave moisture content determination in particulate materials
Author :
Trabelsi, Samir ; Kraszewski, Andrzej W. ; Nelson, Stuart O.
Author_Institution :
U.S. Dept. of Agric., Athens, GA, USA
Abstract :
A new density-independent function for moisture content determination from microwave dielectric measurements on particulate materials is proposed. The definition of this function is based on the existence of a simple relationship between the bulk density and the two components of the relative complex permittivity and the principle of energy balance in dielectrics expressed by tan δ. Its validity and applicability are shown for a granular material, wheat, over broad ranges of microwave frequencies, temperatures, densities and moisture contents
Keywords :
calibration; microwave measurement; moisture measurement; permittivity measurement; bulk density; density-independent function; dielectric measurements; energy balance; granular material; microwave moisture content determination; particulate materials; relative complex permittivity; wheat; Density measurement; Dielectric losses; Dielectric materials; Electromagnetic measurements; Fluctuations; Food industry; Microwave ovens; Moisture measurement; Permittivity; Temperature dependence;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1997. IMTC/97. Proceedings. Sensing, Processing, Networking., IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-3747-6
DOI :
10.1109/IMTC.1997.604032
