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Method and devices use in flow measurement
Luleå University of Technology, Department of Computer Science, Electrical and Space Engineering, Embedded Internet Systems Lab.ORCID iD: 0000-0002-4133-3317
(English)Patent (Other (popular science, discussion, etc.))
Abstract [en]

PCT No. PCT/SE96/00661 Sec. 371 Date Nov. 13, 1997 Sec. 102(e) Date Nov. 13, 1997 PCT Filed May 22, 1996 PCT Pub. No. WO96/37758 PCT Pub. Date Nov. 28, 1996In flow measurement, a measurement signal essentially representing the instantaneous flow rate is determined with the aid of a flow transducer (2) in a flowmeter (1). In order to check whether the flowmeter measures correctly or not, the noise in the measurement signal from the transducer (2) is analyzed. To be more specific, one or more distribution values for the measurement signal are determined and compared with predetermined reference values that have been determined for operating conditions for which the flow transducer is intended. If this comparison reveals that the existing operating conditions differ from those for which the flowmeter is intended, a frequency spectrum for the measurement signal may be determined and compared with reference spectra that have been determined for various known operating conditions, thereby to identify the existing operating conditions. If these are identified, the function of the flowmeter may be corrected on line with the aid of predetermined correction data.

National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-36884Local ID: ac00e4e0-d873-11db-a1bf-000ea68e967bOAI: oai:DiVA.org:ltu-36884DiVA: diva2:1010331
Patent
US US5932812, WO9637758 (A1), EP0880681 (A1), EP0880681 (A0), SE9501895 (L), SE510296 (C2) (1999-08-03)
Note

Godkänd; 1999; 20060926 (ysko)

Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-09-22Bibliographically approved

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