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A Prototype Fiber-Optic Discrete Level-Sensor for Liquid Propane-Butane

Vladimir A. SVIRID, Victor de LEON, Sergei N. KHOTIAINTSEV

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Summary :

This paper describes a fiber-optic level sensor designed to measure the level of liquid propane-butane in a relatively short range (60 cm) in the top part of storage tanks at oil refineries with the purpose of monitoring the level of this product in the filled or slightly underfilled or overfilled tanks during various measuring operations. A discrete multi-element device employing novel refractometric transducers was selected because it yields both a large measurement range and high resolution. Several innovations offer a competitive advantage to industrial users: 1) Special micro-optical refractometric transducer; 2) Efficient and economical sensor multiplexing scheme; 3) Fast level-tracking operational algorithm. The vertical resolution of the sensor -1 cm, the maximum excess pressure in the tank -40 atm (4 MPa). The sensor has the spark-proof and explosion-proof design and optical fiber interface for the transmission of the output data. The sensor successfully measured liquid propane-butane level in storage tanks during numerous cycles of measuring operations.

Publication
IEICE TRANSACTIONS on Electronics Vol.E83-C No.3 pp.303-308
Publication Date
2000/03/25
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Issue on Optical Fiber Sensors)
Category
Physical and Mechanical Sensors

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