Quantitative estimation of the influence of external vibrations on the measurement error of a coriolis mass-flow meter

Bert van de Ridder, Wouter Hakvoort, Johannes van Dijk, Joost Conrad Lötters, Andries de Boer

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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Abstract

In this paper the quantitative influence of external vibrations on the measurement value of a Coriolis Mass-Flow Meter for low flows is investigated, with the eventual goal to reduce the influence of vibrations. Model results are compared with experimental results to improve the knowledge on how external vibrations affect the measurement error. A Coriolis Mass-Flow Meter (CMFM) is an active device based on the Coriolis force principle for direct mass-flow measurements, independent of fluid properties, with a high accuracy, range-ability and repeatability. Besides the effect of the mass-flow on the mode shape of the tube, external vibrations can introduce motions that cannot be distinguished from the Coriolis force induced motion, thus introducing a measurement error. From a multi-axis flexible body model, the transfer function between external vibrations (e.g. floor vibrations) and the flow error, including the active filter characteristics, is derived. The floor vibrations are characterised with a PSD. Integrating the transfer function times the PSD over the whole frequency range results in an RMS flow error estimate. In an experiment predefined vibrations are applied on the casing of the CMFM (white noise spectra and VC norm spectra) and the error is determined. The experimental results corresponds with the model results. The agreement between model and measurements implies firstly that the influence of any floor vibration spectrum on the flow error, can be estimated and secondly that the performance of different CMFM designs can be compared and optimised by shaping their respective transfer functions.
Original languageEnglish
Title of host publicationProceedings of the 11th International Conference on Vibration Problems
EditorsZ. Dimitrovova, J.R. de Almeida
Place of PublicationLisbon, Portugal
PublisherSpringer
Pages1-10
ISBN (Print)978-989-96264-4-7
Publication statusPublished - 9 Sep 2013

Publication series

Name
PublisherSpringer

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Measurement errors
Transfer functions
Coriolis force
Active filters
Flow measurement
White noise
Fluids
Experiments

Keywords

  • METIS-298442
  • IR-89168

Cite this

van de Ridder, B., Hakvoort, W., van Dijk, J., Lötters, J. C., & de Boer, A. (2013). Quantitative estimation of the influence of external vibrations on the measurement error of a coriolis mass-flow meter. In Z. Dimitrovova, & J. R. de Almeida (Eds.), Proceedings of the 11th International Conference on Vibration Problems (pp. 1-10). Lisbon, Portugal: Springer.
van de Ridder, Bert ; Hakvoort, Wouter ; van Dijk, Johannes ; Lötters, Joost Conrad ; de Boer, Andries. / Quantitative estimation of the influence of external vibrations on the measurement error of a coriolis mass-flow meter. Proceedings of the 11th International Conference on Vibration Problems. editor / Z. Dimitrovova ; J.R. de Almeida. Lisbon, Portugal : Springer, 2013. pp. 1-10
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abstract = "In this paper the quantitative influence of external vibrations on the measurement value of a Coriolis Mass-Flow Meter for low flows is investigated, with the eventual goal to reduce the influence of vibrations. Model results are compared with experimental results to improve the knowledge on how external vibrations affect the measurement error. A Coriolis Mass-Flow Meter (CMFM) is an active device based on the Coriolis force principle for direct mass-flow measurements, independent of fluid properties, with a high accuracy, range-ability and repeatability. Besides the effect of the mass-flow on the mode shape of the tube, external vibrations can introduce motions that cannot be distinguished from the Coriolis force induced motion, thus introducing a measurement error. From a multi-axis flexible body model, the transfer function between external vibrations (e.g. floor vibrations) and the flow error, including the active filter characteristics, is derived. The floor vibrations are characterised with a PSD. Integrating the transfer function times the PSD over the whole frequency range results in an RMS flow error estimate. In an experiment predefined vibrations are applied on the casing of the CMFM (white noise spectra and VC norm spectra) and the error is determined. The experimental results corresponds with the model results. The agreement between model and measurements implies firstly that the influence of any floor vibration spectrum on the flow error, can be estimated and secondly that the performance of different CMFM designs can be compared and optimised by shaping their respective transfer functions.",
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author = "{van de Ridder}, Bert and Wouter Hakvoort and {van Dijk}, Johannes and L{\"o}tters, {Joost Conrad} and {de Boer}, Andries",
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van de Ridder, B, Hakvoort, W, van Dijk, J, Lötters, JC & de Boer, A 2013, Quantitative estimation of the influence of external vibrations on the measurement error of a coriolis mass-flow meter. in Z Dimitrovova & JR de Almeida (eds), Proceedings of the 11th International Conference on Vibration Problems. Springer, Lisbon, Portugal, pp. 1-10.

Quantitative estimation of the influence of external vibrations on the measurement error of a coriolis mass-flow meter. / van de Ridder, Bert; Hakvoort, Wouter; van Dijk, Johannes; Lötters, Joost Conrad; de Boer, Andries.

Proceedings of the 11th International Conference on Vibration Problems. ed. / Z. Dimitrovova; J.R. de Almeida. Lisbon, Portugal : Springer, 2013. p. 1-10.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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T1 - Quantitative estimation of the influence of external vibrations on the measurement error of a coriolis mass-flow meter

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AU - de Boer, Andries

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N2 - In this paper the quantitative influence of external vibrations on the measurement value of a Coriolis Mass-Flow Meter for low flows is investigated, with the eventual goal to reduce the influence of vibrations. Model results are compared with experimental results to improve the knowledge on how external vibrations affect the measurement error. A Coriolis Mass-Flow Meter (CMFM) is an active device based on the Coriolis force principle for direct mass-flow measurements, independent of fluid properties, with a high accuracy, range-ability and repeatability. Besides the effect of the mass-flow on the mode shape of the tube, external vibrations can introduce motions that cannot be distinguished from the Coriolis force induced motion, thus introducing a measurement error. From a multi-axis flexible body model, the transfer function between external vibrations (e.g. floor vibrations) and the flow error, including the active filter characteristics, is derived. The floor vibrations are characterised with a PSD. Integrating the transfer function times the PSD over the whole frequency range results in an RMS flow error estimate. In an experiment predefined vibrations are applied on the casing of the CMFM (white noise spectra and VC norm spectra) and the error is determined. The experimental results corresponds with the model results. The agreement between model and measurements implies firstly that the influence of any floor vibration spectrum on the flow error, can be estimated and secondly that the performance of different CMFM designs can be compared and optimised by shaping their respective transfer functions.

AB - In this paper the quantitative influence of external vibrations on the measurement value of a Coriolis Mass-Flow Meter for low flows is investigated, with the eventual goal to reduce the influence of vibrations. Model results are compared with experimental results to improve the knowledge on how external vibrations affect the measurement error. A Coriolis Mass-Flow Meter (CMFM) is an active device based on the Coriolis force principle for direct mass-flow measurements, independent of fluid properties, with a high accuracy, range-ability and repeatability. Besides the effect of the mass-flow on the mode shape of the tube, external vibrations can introduce motions that cannot be distinguished from the Coriolis force induced motion, thus introducing a measurement error. From a multi-axis flexible body model, the transfer function between external vibrations (e.g. floor vibrations) and the flow error, including the active filter characteristics, is derived. The floor vibrations are characterised with a PSD. Integrating the transfer function times the PSD over the whole frequency range results in an RMS flow error estimate. In an experiment predefined vibrations are applied on the casing of the CMFM (white noise spectra and VC norm spectra) and the error is determined. The experimental results corresponds with the model results. The agreement between model and measurements implies firstly that the influence of any floor vibration spectrum on the flow error, can be estimated and secondly that the performance of different CMFM designs can be compared and optimised by shaping their respective transfer functions.

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SN - 978-989-96264-4-7

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BT - Proceedings of the 11th International Conference on Vibration Problems

A2 - Dimitrovova, Z.

A2 - de Almeida, J.R.

PB - Springer

CY - Lisbon, Portugal

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van de Ridder B, Hakvoort W, van Dijk J, Lötters JC, de Boer A. Quantitative estimation of the influence of external vibrations on the measurement error of a coriolis mass-flow meter. In Dimitrovova Z, de Almeida JR, editors, Proceedings of the 11th International Conference on Vibration Problems. Lisbon, Portugal: Springer. 2013. p. 1-10