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Zero-flow offset variation in ultrasonic clamp-on flowmeters due to inhomogeneity and nonlinearity of pipe materials

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10.1109/TIM.2017.2731018
 
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hdl:2117/111146

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Millán Blasco, OliverMés informacióMés informacióMés informació
Salazar Soler, JorgeMés informacióMés informacióMés informació
Chávez Domínguez, Juan AntonioMés informacióMés informacióMés informació
Turó Peroy, AntonioMés informacióMés informacióMés informació
García Hernández, Miguel J.Més informacióMés informació
Document typeArticle
Defense date2017-11
Rights accessRestricted access - publisher's policy
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
Abstract
The objective of this paper is to measure the zero-flow offset variation in ultrasonic Clamp-on flowmeters produced by using pipes made of materials with a nonhomogeneous and nonlinear behavior. The evaluation of this phenomenon has been tested by the experimental measurement, the experiments consist of measuring the variation in the flow measurement when in ``no-flow condition,'' the transducers are moved along the pipe. Experimental results reveal that the reciprocity criterion is not fulfilled when nonhomogeneous and nonlinear pipe materials are used. Consequently, in these types of pipes materials, it is necessary to calibrate the offset when transducers are installed, and probably will need recalibration if the transducers are displaced to another position on the pipe. However, in installations, where it is not possible to stop flow in order to calibrate, the flowmeter will have an error in the measured value and this error will depend on the acoustic characteristics of the pipe material.
CitationMillan, O., Salazar, J., Chavez-Dominguez, J. A., Turo, A., Garcia, M. Zero-flow offset variation in ultrasonic clamp-on flowmeters due to inhomogeneity and nonlinearity of pipe materials. "IEEE transactions on instrumentation and measurement", Novembre 2017, vol. 66, núm. 11, p. 2845-2851. 
URIhttp://hdl.handle.net/2117/111146
DOI10.1109/TIM.2017.2731018
ISSN0018-9456
Publisher versionhttp://ieeexplore.ieee.org/document/8007251/
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  • GSS - Grup Sistemes Sensors - Articles de revista [13]
  • Departament d'Enginyeria Electrònica - Articles de revista [1.664]
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