A microwave method for on-line determination of bulk density and moisture content of particulate materials

被引：101
|
作者：
Trabelsi, S [1 ]
Kraszewski, AW [1 ]
Nelson, SO [1 ]
机构：
[1] ARS, USDA, Richard B Russell Agr Res Ctr, Athens, GA 30604 USA
来源：
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 1998年 / 47卷 / 01期
关键词：
bulk density measurement; dielectric properties; microwave measurement; moisture content measurement; particulate materials;
D O I：
10.1109/19.728804
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A new method for simultaneous and independent on-line determination of bulk density and moisture content in particulate materials by measurements of the relative complex permittivity is proposed, The bulk density is determined, based on a representation in the complex plane of relative complex permittivity normalized to bulk density, For moisture content determination, a new density-independent function, exclusively dependent on the dielectric properties, is used. Results obtained from measurements on wheat over broad ranges of microwave frequencies, temperatures, densities, and moisture contents are presented.
引用
收藏
页码：127 / 132
页数：6
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