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Detection of pulsating flows in an ultrasonic flow meter
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.ORCID iD: 0000-0002-4133-3317
2002 (English)In: Proceedings of the 8th International Symposium on District Heating and Cooling, 2002Conference paper, Published paper (Refereed)
Abstract [en]

Transit-time ultrasonic flowmeters present advantages for district heating applications, since they are accurate, non-intrusive, and cheap. However, such flowmeters are sensitive to velocity profile variations since the flow rate is measured in the volume area between two ultrasonic transducers. Ultrasonic flowmeters are therefore sensitive to installation effects. Installation effects could be either static or dynamic. A pulsating flow is a dynamic installation effect. In the field, the diagnostic can only be performed with the measured flow rate. Flow measurements with and without pulsating flow have been recorded in a flow meter calibration facility. The detection of a pulsating flow can be made by using Hinich's harmogram. It is possible to detect harmonics that emerge from the noise by using the harmogram.

Place, publisher, year, edition, pages
2002.
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Industrial Electronics
Identifiers
URN: urn:nbn:se:ltu:diva-32604Local ID: 725761e0-e83d-11db-b9a9-000ea68e967bOAI: oai:DiVA.org:ltu-32604DiVA: diva2:1005838
Conference
International Symposium on District Heating and Cooling : 14/08/2002 - 16/08/2002
Projects
Fjärrvärme
Note

Godkänd; 2002; 20070328 (pekkari)

Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved

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fulltext(528 kB)15 downloads
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Authority records BETA

van Deventer, JanDelsing, Jerker

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CiteExportLink to record
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Citation style
  • apa
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  • nn-NB
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Output format
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