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Extended step-out length fiber Bragg grating interrogation system for condition monitoring of electrical submersible pumps

Fusiek, G. and Niewczas, P. and McDonald, J.R. (2005) Extended step-out length fiber Bragg grating interrogation system for condition monitoring of electrical submersible pumps. Optical Engineering, 44 (3). pp. 1-10. ISSN 0091-3286

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Abstract

We present details of the design and laboratory evaluation of the fiber Bragg grating (FBG) interrogation system developed specifically for condition monitoring of electrical submersible pumps (ESPs). The system, based on the microelectromechanical systems (MEMS) Fabry-Pæ#169;rot tunable filter, is capable of interrogating several FBG sensors placed around an ESP unit and configured to measure static and dynamic parameters, e.g., temperature, vibration signature and/or instantaneous voltage, and current. Sensor interrogation over the extended step-out length distance of 24 km is demonstrated in the laboratory in a simple experiment of multipoint dynamic strain monitoring in a vibrated cantilever beam.