Advances for density-independent moisture measurement: a review

Klaus Kupfer

doi:10.1117/12.390659

6 July 2000 Advances for density-independent moisture measurement: a review

Klaus Kupfer

Proceedings Volume 4129, Subsurface Sensing Technologies and Applications II; (2000) https://doi.org/10.1117/12.390659
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

During the calibration of dielectric moisture measurement methods the complex value of permittivity will be assigned to the moisture content determined by the oven dry method. The measured complex value of permittivity will be influenced by the moisture content, by density variations, and salt content. In the microwave range different methods exist to increase the accuracy of moisture measurement in production processes and at the analysis of structural conditions. The most promising methods to reduce the influence of the density use a multi-parameter-measurement at one or more frequencies in the range of radio frequencies or microwaves. This trend is a result of developing opportunities in instrumentation design and production of numerous microwave components and fast computer equipment.

Citation Download Citation

Klaus Kupfer "Advances for density-independent moisture measurement: a review", Proc. SPIE 4129, Subsurface Sensing Technologies and Applications II, (6 July 2000); https://doi.org/10.1117/12.390659

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