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Thermal mass flow meter

About: Thermal mass flow meter is a research topic. Over the lifetime, 1759 publications have been published within this topic receiving 21878 citations.


Papers
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Patent
09 Sep 1982
TL;DR: In this article, an apparatus capable of selecting and controlling the mass flow rate of a gas to be substantially constant over extended periods of time at very low flow rates and very low gas partial pressures is disclosed.
Abstract: An apparatus capable of selecting and controlling the mass flow rate of a gas to be substantially constant over extended periods of time at very low flow rates and very low gas partial pressures is disclosed.

31 citations

Patent
23 May 1996
TL;DR: In this article, a fluid thermal mass flow meter including a composite flow tube having four tubular segments of high thermal conductivity formed in a length of tube made of a material having a relatively low thermal conductivities, a thin film element formed on the surface of and extending around each of the four tubeular segments, circuitry for incorporating the elements into a bridge circuit, and a housing for containing the flow tube, elements, and circuitry.
Abstract: A fluid thermal mass flow meter including a composite flow tube having four tubular segments of high thermal conductivity formed in a length of tube made of a material having a relatively low thermal conductivity, a thin film element formed on the surface of and extending around each of the four tubular segments, circuitry for incorporating the elements into a bridge circuit, and a housing for containing the flow tube, elements, and circuitry.

31 citations

Journal ArticleDOI
TL;DR: In this article, a dual-parameter measurement method of gas-liquid two-phase flow based on a dualcone meter is proposed, and the results show that it is efficient to utilize this dual-cone method for high GVF and low pressure gas-liqueflotation gas- liquid two phase flow measurement.

31 citations

Patent
17 May 1990
TL;DR: In this paper, a pneumatic equivalent of a low pass R C filter is used to decouple the high turbulence in the main flow through the venturi, averaging same and providing a scaled down profiled flow through sample tube for measurement by a transducer in the sample tube, the measurements having an accuracy of ±2% of reading.
Abstract: Improvements in a mass air flow meter for internal combustion engines are disclosed which comprise structure for improving the flow dynamics of the air flow through the sampling path including expansion of the dynamic range and increase of the signal to noise ratio resulting in improved engine performance, fuel efficiency, and emission control. Such structure includes a sample tube being tapered in decreasing area in the direction of air flow therethrough and a pneumatic equivalent of a low pass R C filter which decouples the high turbulence in the main flow through the venturi, averages same and provides a scaled down profiled flow through the sample tube for measurement by a transducer in the sample tube, the measurements having an accuracy of ±2% of reading.

31 citations

Journal ArticleDOI
TL;DR: In this article, the performance of orifice plates in real-time monitoring of oil, gas and water standard flow rates was investigated, and a multi-rate test was implemented in two production wells routed individually to a test separator.

31 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202312
202226
20212
20208
20194
201811