Measurement of air moisture by the phosphorescence lifetime of a sol-gel based sensor

Author

Campo, J.C. ; Pérez, M.A. ; González, M. ; Ferrero, F.J.

Author_Institution

Dept. de Ingenieria Electr. y Electron., Oviedo Univ., Spain

Volume

1

fYear

2000

fDate

2000

Firstpage

273

Abstract

Air moisture is an important parameter in several industrial processes. Most of the sensors to measure air moisture are based on changes of the electrical properties of some materials. There are also optical sensors based on changes in the color and infrared sensor based on the high absorption of the water compared to other substances. In this paper, we present another type of optical sensor based on the measurement of phosphorescence lifetime of Al-Ferron in sol-gel support and using optical fibers to guide the light. The performance of the sensor has been evaluated by passing different wet streams through the sensor

Keywords

fibre optic sensors; humidity sensors; moisture measurement; phosphorescence; radiative lifetimes; sol-gel processing; Al-Ferron; Stern-Volmer equation; air moisture measurement; fiber optic sensor; humidity sensor; optical fiber light guiding; optical sensor; phosphorescence lifetime; sensor performance; sol-gel based sensor; sol-gel glass matrix; triplet lifetime; Absorption; Chemical sensors; Electrons; Humidity measurement; Moisture measurement; Optical fibers; Optical scattering; Optical sensors; Phosphorescence; Wavelength measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2000. IMTC 2000. Proceedings of the 17th IEEE

Conference_Location

Baltimore, MD

ISSN

1091-5281

Print_ISBN

0-7803-5890-2

Type

conf

DOI

10.1109/IMTC.2000.846866

Filename

846866