Title :
Universal calibration for microwave moisture sensors for granular materials
Author :
Trabelsi, Samir ; Nelson, Stuart O. ; Kraszewski, Andrzej W.
Author_Institution :
Dept. of Agric., Agric. Res. Service, Athens, GA, USA
Abstract :
A universal calibration method for microwave moisture sensors for granular materials is presented. The method is based on measurement of the dielectric properties and the use of a complex-plane representation of the normalized complex permittivity. Effectiveness of this method in moisture content prediction is tested for granular materials presenting significant structural and compositional differences. A single moisture calibration equation is given at 9.46 GHz and 24°C for wheat, oats and soybeans
Keywords :
calibration; electric sensing devices; granular materials; microwave measurement; moisture measurement; permittivity measurement; 24 C; 9.46 GHz; complex permittivity measurement; dielectric properties; granular materials; microwave moisture sensor; oats; soybeans; universal calibration; wheat; Calibration; Composite materials; Dielectric materials; Dielectric measurements; Equations; Materials testing; Microwave sensors; Microwave theory and techniques; Moisture; Permittivity measurement;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2001. IMTC 2001. Proceedings of the 18th IEEE
Conference_Location :
Budapest
Print_ISBN :
0-7803-6646-8
DOI :
10.1109/IMTC.2001.929512
