Sensors 2009, 9(10), 8311-8335; doi:10.3390/s91008311
Review

Turbidimeter Design and Analysis: A Review on Optical Fiber Sensors for the Measurement of Water Turbidity

Received: 22 July 2009; in revised form: 17 September 2009 / Accepted: 18 September 2009 / Published: 20 October 2009
(This article belongs to the Section Physical Sensors)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Turbidimeters operate based on the optical phenomena that occur when incident light through water body is scattered by the existence of foreign particles which are suspended within it. This review paper elaborates on the standards and factors that may influence the measurement of turbidity. The discussion also focuses on the optical fiber sensor technologies that have been applied within the lab and field environment and have been implemented in the measurement of water turbidity and concentration of particles. This paper also discusses and compares results from three different turbidimeter designs that use various optical components. Mohd Zubir and Bashah and Daraigan have introduced a design which has simple configurations. Omar and MatJafri, on the other hand, have established a new turbidimeter design that makes use of optical fiber cable as the light transferring medium. The application of fiber optic cable to the turbidimeter will present a flexible measurement technique, allowing measurements to be made online. Scattered light measurement through optical fiber cable requires a highly sensitive detector to interpret the scattered light signal. This has made the optical fiber system have higher sensitivity in measuring turbidity compared to the other two simple turbidimeters presented in this paper. Fiber optic sensors provide the potential for increased sensitivity over large concentration ranges. However, many challenges must be examined to develop sensors that can collect reliable turbidity measurements in situ.
Keywords: optical fiber sensor; particles; scattered light; turbidimeter; turbidity
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MDPI and ACS Style

Bin Omar, A.F.; Bin MatJafri, M.Z. Turbidimeter Design and Analysis: A Review on Optical Fiber Sensors for the Measurement of Water Turbidity. Sensors 2009, 9, 8311-8335.

AMA Style

Bin Omar AF, Bin MatJafri MZ. Turbidimeter Design and Analysis: A Review on Optical Fiber Sensors for the Measurement of Water Turbidity. Sensors. 2009; 9(10):8311-8335.

Chicago/Turabian Style

Bin Omar, Ahmad F.; Bin MatJafri, Mohd Z. 2009. "Turbidimeter Design and Analysis: A Review on Optical Fiber Sensors for the Measurement of Water Turbidity." Sensors 9, no. 10: 8311-8335.

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