Electrically passive acoustic-resonance-level gauge

Denis Donlagic

doi:10.1117/12.349726

31 May 1999 Electrically passive acoustic-resonance-level gauge

Denis Donlagic

Proceedings Volume 3670, Smart Structures and Materials 1999: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials; (1999) https://doi.org/10.1117/12.349726
Event: 1999 Symposium on Smart Structures and Materials, 1999, Newport Beach, CA, United States

Abstract

This paper presents a novel electrically passive level gauge suitable for use under industrial and other extreme conditions. The method exploits acoustics resonance of one- dimensional gas resonator. A low cost interferometric fiber- optic microphone is proposed as an acoustic pressure sensor and the acoustic power is delivered to the resonator by the acoustic waveguide. The distances over 120 m between the electrically passive sensor and the electrically active controller were experimentally demonstrated. The proposed method proves to be very robust and useful under heavy operating conditions.

Citation Download Citation

Denis Donlagic "Electrically passive acoustic-resonance-level gauge", Proc. SPIE 3670, Smart Structures and Materials 1999: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials, (31 May 1999); https://doi.org/10.1117/12.349726

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