Title :
A microwave system for humidity measurements
Author :
Gülmez, Yakup ; Özkan, Turgay ; Gülmez, Gülay ; Turhan, Enis
Author_Institution :
TUBITAK Ulusal Metroloji Enstitusu, Gebze, Turkey
Abstract :
A microwave humidity measurement system based on microwave resonance has been developed at TÜBİTAK UME (National Metrology Institute of Turkey). This technique is based on microwave resonance frequency detection of a cavity that is sensitive to permittivity of air and water content. We have designed a copper microwave cavity resonator, a microwave electronics and a software to measure relative permittivity of air. Experimental results show good agreement with traditional humidity measurements in the range from 25% RH to 80% RH.
Keywords :
humidity measurement; microwave detectors; microwave measurement; microwave resonators; permittivity; air permittivity; copper microwave cavity resonator; microwave electronics; microwave humidity measurement system; microwave resonance frequency detection; microwave system; relative permittivity; water permittivity; Cavity resonators; Humidity; Humidity measurement; Microwave measurements; Microwave oscillators; Microwave theory and techniques; Resonant frequency; Electromagnetic sensor; frequency domain method; microwave resonance; moisture measurements;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6251098
