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The Study on Amended Method for the Measurement of Humidity with Microwave Cavity Sensor

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Abstract:

While measuring the steam humidity using microwave cylindrical cavity, thanks to the thermal expansion effect of metal, the resonant frequency changes as temperature changes. Such phenomenon reduces the measurement accuracy. This paper analyses the phenomenon, and discusses an amended calculation method which will increase the test accuracy. Compared with lab test results, this amended method becomes more convictive.

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Periodical:

Advanced Materials Research (Volumes 468-471)

Pages:

1384-1388

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.468-471.1384

Citation:

Cite this paper

Online since:

February 2012

Authors:

Shu E Zhang, Guo Peng Li

Keywords:

Cavity, Microwave, Resonant Frequency, Thermal Expansion

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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References

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