TY - GEN
T1 - Fibre-optic evanescent-wave field fluid concentration sensor
AU - Fabian, M.
AU - Lewis, E.
AU - Newe, T.
AU - Lochmann, S.
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
KW - Acetone
KW - Ethanol
KW - Me-thanol
KW - N-propanol
KW - Optical fibre sensor
KW - Refractive index
UR - http://www.scopus.com/inward/record.url?scp=67650517707&partnerID=8YFLogxK
U2 - 10.1109/SSD.2009.4956701
DO - 10.1109/SSD.2009.4956701
M3 - Conference contribution
AN - SCOPUS:67650517707
SN - 9781424443468
T3 - 2009 6th International Multi-Conference on Systems, Signals and Devices, SSD 2009
BT - 2009 6th International Multi-Conference on Systems, Signals and Devices, SSD 2009
T2 - 2009 6th International Multi-Conference on Systems, Signals and Devices, SSD 2009
Y2 - 23 March 2009 through 26 March 2009
ER -