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Characterization of and correction for pressure-measurement installation
KTH, School of Engineering Sciences (SCI), Mechanics, Fluid Physics. KTH, School of Industrial Engineering and Management (ITM), Centres, Competence Center for Gas Exchange (CCGEx). CCGEx.ORCID iD: 0000-0003-0976-2004
2017 (English)Report (Other academic)
Abstract [en]

A method to experimentally determine the dynamic characteristics of pressure measurement installations has been developed and tested. The method involves pressurising a volume enclosed by a rubber membrane until the membrane burst, generating a negative pressure step. The natural frequency and damping ratio of the system can then be found through analysis of the step response of the measurement system.

An example showing how it is possible to compensate for the dynamic characteristics of the installation, for qualitative measurements of highly dynamic processes is also given. This is done by modelling the system as an acoustic oscillator. Since the model requires that the time derivative of the signal is taken it amplifies noise in the signal, meaning that the quantitative values of the corrected measurements should be handled with care.

Place, publisher, year, edition, pages
2017. , p. 11
Series
TRITA-MEK, ISSN 0348-467X ; 2017.11
Keywords [en]
Pressure measurements, installation characteristics
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-215136ISBN: 978-91-7729-569-3 (electronic)OAI: oai:DiVA.org:kth-215136DiVA, id: diva2:1146596
Note

QC 20171016

Available from: 2017-10-03 Created: 2017-10-03 Last updated: 2017-10-16Bibliographically approved

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Winroth, P. Marcus
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CiteExportLink to record
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  • apa
  • ieee
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  • de-DE
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Output format
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