Multi-sensor system using plastic optical fibers for intrinsically safe level measurements

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Show simple item record Vázquez García, María Carmen Gonzalo, Ana B. Vargas Palma, Salvador Elías Montalvo García, Julio 2009-04-17T13:02:01Z 2009-04-17T13:02:01Z 2004-05-06
dc.identifier.bibliographicCitation Sensors and Actuators A, Vol. 116, p. 22 - 32, 2004
dc.description.abstract A system for measuring liquid level in multiple tanks using optical fibe technology has been developed. Oil fiel service industry or any sector requiring liquid level measurements in flammabl atmospheres can be benefite from this intrinsically safe technology. The device used a single lens for the emitting and receiving fibe and it is based on amplitude variations as a function of the liquid distance and not in time of fligh or phase detection. Being the firs fiber-opti liquid level sensor with those characteristics for long ranges (>200 cm). A simple model to describe their behavior has been derived and tested on two prototypes. A Monte-Carlo method is used to fi the experimental data and obtain the model parameters. High accuracy between experimental data and fitte curve is obtained. The prototypes have a good linearity, better than 1.5% FS (full scale). Sensor heads are made of plastic optical fiber (POF) that are easy to handle, flexible and economical. They are excited by 650 nm lasers, housed in ST-connectors to obtain compact and rough prototypes. Optical multiplexing is used to increase the measuring safety area. Frequency division multiplexing is used to address each sensor head. A discussion about the influenc of tilts and aberrations is also included.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Elsevier
dc.rights © Elsevier
dc.subject.other Fibre optics
dc.subject.other Liquid level measurement
dc.subject.other Sensors
dc.subject.other Oil industry
dc.title Multi-sensor system using plastic optical fibers for intrinsically safe level measurements
dc.type article PeerReviewed
dc.description.status Publicado
dc.subject.eciencia Electrónica
dc.identifier.doi 10.1016/j.sna.2004.03.035
dc.rights.accessRights openAccess
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