Development of Fiber Optic Differential Pressure Sensor Used for BOD Measurement in Sugar and Allied Industry
M. L. Dongare
M. L. Dongare, Department of Electronic Science Annasaheb Awate College Manchar, Pune University, Pune, India.
Manuscript received on September 27, 2013. | Revised Manuscript received on October 18, 2013. | Manuscript published on October 30, 2013. | PP: 171-173 | Volume-3, Issue-1, October 2013. | Retrieval Number: A2204103113/2013©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: An attempt has been made to develop prototype instruments with Fiber optic differential pressure sensor (FODPS ) and its use for measuring Biological Oxygen Demand (BOD) in the effluent from sugar factories and distilleries. Design of fiber optic based differential pressure sensor (FODPS) using intensity modulation technique is reported in this paper. A corrugated diaphragm based differential pressure sensor with a fiber optic probe to record this deformation/displacement of the diaphragm is designed, optimized and fabricated. In FODPS, diaphragm act as a reflector. A flexible disc of plastic is used as a diaphragm to convert the measuring pressure to the deflection of diaphragm. Concentric corrugations are designed to linearise the deflections according to pressure. Reference and measuring pressures are applied to control and experimental headspaces respectively. As the pressure changes in the experimental head space, the diaphragm is deform and displaces, and distance between fiber tip and plane of diaphragm changes and thus resultant reading is proportional to the differential pressure. An attempt has been made to develop prototype instruments with Fiber optic differential pressure sensor (FODPS) and its use for measuring Biological Oxygen Demand (BOD) in the effluent from sugar factories and distilleries.
Keywords: BOD, FODPS, Fiber, Distillery, Sensor.