A microwave system for humidity measurements

Author

Gülmez, Yakup ; Özkan, Turgay ; Gülmez, Gülay ; Turhan, Enis

Author_Institution

TUBITAK Ulusal Metroloji Enstitusu, Gebze, Turkey

fYear

2012

fDate

1-6 July 2012

Firstpage

652

Lastpage

653

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements (CPEM), 2012 Conference on

Conference_Location

Washington, DC

ISSN

0589-1485

Print_ISBN

978-1-4673-0439-9

Type

conf

DOI

10.1109/CPEM.2012.6251098

Filename

6251098