Abstract

A microwave dielectric method for nondestructive instantaneous determination of bulk density and moisture content of pine pellets is presented. The method is based on measurement of dielectric properties,and , at microwave frequencies. Bulk density was determined from a complex-plane representation of the dielectric properties and does not require moisture content and temperature to be known. Moisture content was determined from measured and independent of bulk density with a density-independent calibration function. The standard error of calibration for bulk density was about 0.02 g/cm3 and that of moisture content was about 0.4%.

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