Fluid flow meter using thermal tracers

Fluid flows through a conduit. To measure flow speed the fluid is heated at a heating location in the conduit with a time-dependent heating strength. A speed of sound in fluid flowing in the conduit is measured at a plurality of sensing locations downstream from said heating location. The flow speed...

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Bibliographic Details
Main Authors VOLKER, ARNO WILLEM FREDERIK, BLOKLAND, HUIBERT, HUNTER, THEODOOR PETER MARTIJN, GEERS, LEON FERDINAND GERARD
Format Patent
LanguageEnglish
French
German
Published 07.10.2009
Subjects
MEASURING
MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL
METERING BY VOLUME
PHYSICS
TESTING
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Summary:Fluid flows through a conduit. To measure flow speed the fluid is heated at a heating location in the conduit with a time-dependent heating strength. A speed of sound in fluid flowing in the conduit is measured at a plurality of sensing locations downstream from said heating location. The flow speed of the fluid is determined from a delay with which the time dependence is detected in the sound speeds measured at said sensing locations. In an embodiment a frequency of the variation of heating strength that is used to determine the flow speed is selected automatically dependent on the flow speed and/or other circumstances.
Bibliography:Application Number: EP20080153980