Abstract
We report a fiber optic sensor to measure the level of free chlorine present in chlorinated water. The sensor is made of an optical fiber that has been suitably bent in the form of U-shape. The sensor produces its sensing action when the U-shape probe is dipped inside liquid samples. Sensing principle of the sensor is based on absorption of fiber optic evanescent light wave by surrounding liquid medium. Experimental observations have shown that sensitivity increases with decrease in wavelength of excitation light source. We found that resolution of the sensor varies from 2.7 to 5.5 mg/L at 430 nm wavelength. The proposed sensor has the potential to be a low-cost alternative device for measuring free chlorine level of chlorinated drinking water very precisely and accurately.
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Acknowledgements
The authors express their sincere thanks to Prof. T. Bezboruah, Head of the Department of ECT, Gauhati University, for providing infrastructure support and encouragement to this work. And, they are also thankful to Prof. Shakuntala Laskar and Asst. Prof. Bikamrjit Goswami of EEE Department, Assam Don Bosco University, Assam, India, for providing valuable suggestions during the work.
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Yesmin, S., Chetia, D., Basumatary, T., Singh, H.K. (2018). Fiber Optic Sensor for Detection of Chlorine Level in Water. In: Bera, R., Sarkar, S., Chakraborty, S. (eds) Advances in Communication, Devices and Networking. Lecture Notes in Electrical Engineering, vol 462. Springer, Singapore. https://doi.org/10.1007/978-981-10-7901-6_47
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DOI: https://doi.org/10.1007/978-981-10-7901-6_47
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