27 November 2001 Comparison of density-independent methods for moisture measurement using microwave free-space technique
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Abstract
This paper compares our proposed new method to the former methods for density-independent moisture measurement using microwave free-space technique. The measurement setups and the published results of the two methods are summarized and compared. The methods are compared in the aspects of accuracy and moisture range based on the measurements for the same samples of green tea and timber. It is shown that the accuracy by the new method is better than that by the former method for both materials in the moisture range from 2 to 30%. The results also indicates that the new method has the feature to be able to measure wide moisture range. The new method measures moisture content up to 42% for green tea, in contrast to the former method, by which the maximum measurable moisture content is approximately 30%.
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Yangjun Zhang, Yangjun Zhang, Seichi Okamura, Seichi Okamura, } "Comparison of density-independent methods for moisture measurement using microwave free-space technique", Proc. SPIE 4491, Subsurface and Surface Sensing Technologies and Applications III, (27 November 2001); doi: 10.1117/12.450172; https://doi.org/10.1117/12.450172
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