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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
17 Mar 1975
TL;DR: In this article, a two-stage fluid flow control valve system employing feedback such that the rate of flow of fluid through the load connections follows an input signal very closely over a wide dynamic range.
Abstract: A two-stage fluid flow control valve system employing feedback such that the rate of flow of fluid through the load connections follows an input signal very closely over a wide dynamic range. The system employs poppet valves as flow sensors in the return line. The rate of flow of fluid through these sensors is a non-linear function of the pressure thereacross such that the change in pressure drop resulting from a given displacement from a set flow rate is greater at low ranges of flow than at high ranges. The result is closer control at low rates of flow where such control is normally more difficult to achieve.

5 citations

Journal ArticleDOI
TL;DR: In this article, the authors investigated three methods for response time determination: a jump of temperature induced by electric heating, a gas velocity step made by a membrane burst and acoustic phase shifts between sound velocity and sound pressure.

5 citations

Patent
21 Sep 2005
TL;DR: In this article, the system and method sensor processor display flow rate gas control for heat treating using flow rate measuring based upon mass gas flow rate conditions using Flow rate valves and sensors to control the heat treating furnace and the gas atmosphere therein.
Abstract: The system and method sensor processor display flow rate gas control for heat treating using flow rate measuring based upon mass gas flow rate conditions using flow rate valves and sensors (36) to control the heat treating furnace and the gas atmosphere therein (10).

5 citations

Patent
18 Jun 2004
TL;DR: In this paper, an electromagnetic flow meter is described which can be used to measure flow in low conductivity fluids, for example alcohol, turpentine, oil or other organic solvents.
Abstract: An electromagnetic flow meter is disclosed which can be used to measure flow in low conductivity fluids, for example alcohol, turpentine, oil or other organic solvents In one embodiment, the electromagnetic flow meter includes an elongate flow conduit having a direction of elongation corresponding to a direction of fluid flow, magnetic field generating means for generating a magnetic field across the flow conduit and potential sensing electrodes for sensing a potential generated by the magnetic field in a fluid flowing through the conduit Both the field generating means and the potential sensing electrodes of the flow meter are elongate in the direction of flow

5 citations


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