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

Author

Trabelsi, Samir ; Kraszewski, Andrzej W. ; Nelson, Stuart O.

Author_Institution

US Dept. of Agric., Athens, GA, USA

Volume

47

Issue

1

fYear

1998

fDate

2/1/1998 12:00:00 AM

Firstpage

127

Lastpage

132

Abstract

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

Keywords

agriculture; computerised instrumentation; density measurement; microwave measurement; moisture measurement; permittivity measurement; bulk density; error analysis; microwave frequencies; microwave method; moisture content measurement; on-line determination; particulate materials; relative complex permittivity; wheat; Density measurement; Dielectric materials; Dielectric measurements; Frequency measurement; Microwave frequencies; Microwave measurements; Microwave theory and techniques; Moisture measurement; Particle measurements; Permittivity measurement;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.728804

Filename

728804