Fibre-optic evanescent-wave field fluid concentration sensor

M. Fabian, E. Lewis, T. Newe, S. Lochmann

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

A fibre-optic fluid concentration sensor based on refractive index measurements is reported. Its working principle is validated for some simple aqueous primary alcohol mixtures, such as Acetone, Ethanol, Methanol, 1-Propanol, and 2-Pro-panol, covering a concentration range from 0%vol to 10%vol. With a simple and low cost LED based measurement setup a resolution of about 0.00005 refractive index units was achie-ved, which approximately corresponds to 0.2% methanol, 0.75% ethanol and acetone, and 0.05% 1- propanol and 2-propanol. Moreover, described sensing method is applicable for all fluids that show different refractive indices at different concentrations, which by far is the case for almost all fluids, since the refractive index of a mixture is related to its density.

Original languageEnglish
Title of host publication2009 6th International Multi-Conference on Systems, Signals and Devices, SSD 2009
DOIs
Publication statusPublished - 2009
Event2009 6th International Multi-Conference on Systems, Signals and Devices, SSD 2009 - Djerba, Taiwan, Province of China
Duration: 23 Mar 200926 Mar 2009

Publication series

Name2009 6th International Multi-Conference on Systems, Signals and Devices, SSD 2009

Conference

Conference2009 6th International Multi-Conference on Systems, Signals and Devices, SSD 2009
Country/TerritoryTaiwan, Province of China
CityDjerba
Period23/03/0926/03/09

Keywords

  • Acetone
  • Ethanol
  • Me-thanol
  • N-propanol
  • Optical fibre sensor
  • Refractive index

Fingerprint

Dive into the research topics of 'Fibre-optic evanescent-wave field fluid concentration sensor'. Together they form a unique fingerprint.

Cite this