微波测定颗粒物料中水分的一种新的密度无关函数

IEEE Instrumentation and Measurement Technology Conference Sensing, Processing, Networking. IMTC Proceedings Pub Date : 1997-05-19 DOI:10.1109/IMTC.1997.604032

S. Trabelsi, A. Kraszewski, S. Nelson

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引用次数: 23

摘要

提出了一种新的密度无关函数，用于微波介电测量颗粒材料的水分含量。该函数的定义是基于体积密度与相对复介电常数的两个分量之间存在一个简单的关系，以及用tan /spl / delta/表示的介电体能量平衡原理。在微波频率、温度、密度和水分含量的广泛范围内，该方法对颗粒状材料小麦的有效性和适用性得到了证明。

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A new density-independent function for microwave moisture content determination in particulate materials

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 /spl delta/. Its validity and applicability are shown for a granular material, wheat, over broad ranges of microwave frequencies, temperatures, densities and moisture contents.

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IEEE Instrumentation and Measurement Technology Conference Sensing, Processing, Networking. IMTC Proceedings

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