Topic
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.
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Patent•
01 Aug 1988
TL;DR: A Coriolis mass flow meter for determining the mass flow rates of fluids passed through twin flow tubes which are oscillated by a driver in a tuning fork fashion so as to be distorted by mass flow rate of the fluid passing through the tubes with the distortion measured by sensors as mentioned in this paper.
Abstract: A Coriolis mass flow meter apparatus for determining the mass flow rates of fluids passed through twin flow tubes which are oscillated by a driver in a tuning fork fashion so as to be distorted by the mass flow rate of the fluid passing through the tubes with the distortion measured by sensors; where, sensor and driver components are mounted to each of the flow tubes so that the masses of the components and the structures used to mount the components to the flow tubes results in a center of gravity which is located on the axes about which each flow tube is distorted by generated Coriolis forces.
41 citations
TL;DR: In this paper, four different sensing techniques are discussed based on capacitive, electrostatic, microwave and nucleonic principles with regard to their homogeneous sensing characteristics, and the mass flow rate of randomly distributed solids flowing in pneumatic conveyors is measured.
41 citations
Patent•
08 Sep 2000
TL;DR: In this article, the authors proposed a method and a sensor for improved mass flow measurement, where at least one material-specific parameter is measured in order to characterise the heat transmission behavior of the gas and is used to correct the mass flow measurements.
Abstract: The invention relates to a method and a sensor (15, 9, 14) for improved mass flow measurement. In known thermal mass flow sensors, a gas flow (7) is heated with a heating element (4) and the mass flow is determined from the temperature difference between two thermoelements (5, 6). According to the invention, at least one material-specific parameter is measured in order to characterise the heat transmission behaviour of the gas (8) and is used to correct the mass flow measurement. Said material-specific parameter is preferably a heat conductivity λ, a heat capacity c, a product of heat capacity and density c*ς and/or a diffusivity α. The special sensor (9) that is provided for measuring λ and/or c or c*ς is structured similarly to the mass flow sensor (15) but is exposed to a current-free part (8a) of the medium (8). The advantages of the invention are e.g., better precision, even for unknown or variable thermal properties of the gas (8).
41 citations
TL;DR: In this article, the authors proposed a new method of two-phase flow metering based on the use of dual-modality system and multidimensional data fusion, which is used in combination with a commercial off-the-shelf EMF to measure the volumetric flow rate of each constituent phase.
41 citations
Patent•
03 Oct 1986
TL;DR: A Coriolis-type mass flow meter which uses two parallel, omega-shaped conduits and deduces mass flow rate from changes in the phase difference of signals from sensors at the outboard curved portions of the conduits as mentioned in this paper.
Abstract: A Coriolis-type mass flow meter which uses two parallel, omega-shaped conduits and deduces mass flow rate from changes in the phase difference of signals from sensors at the outboard curved portions of the conduits which measure the relative positions of the conduits' sizes.
40 citations