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Design and performance assessment of a plastic optical fibre-based sensor for measuring water turbidity

Bilro, L. ; Prats, S. ; Pinto, J. L. ; Keizer, J. J. ; Nogueira, R.N.

Measurement Science and Technology Vol. 21, Nº 10, pp. 107001 - 4pp., August, 2010.

ISSN (print): 0957-0233
ISSN (online): 1361-6501

Scimago Journal Ranking: 0,67 (in 2010)

Digital Object Identifier: 10.1088/0957-0233/21/10/107001

A turbidity sensor based on a plastic optical fibre is presented. The sensor is based on transmission and 90◦ scattering variations with the total suspended particles in a solution. Transmitted and scattered output signals were characterized and evaluated for different configurations for a large range of clay concentrations. The developed system, in comparison with the OBS-3+ standard system, is more robust, of low cost and has a user-friendly design. A good correlation between the systems was accomplished.