Patent
Multi-sensor mass flow meter along with method for accomplishing same
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TLDR
In this article, a method for measuring fluid flow rate over a wide range of flow rates is proposed, where measurements comprising data of one mark from at least two sensor readings plus one other time event are combined to determine the reported flow rate.Abstract:
A device for measuring fluid flow rates over a wide range of flow rates The invention is particularly adapted for use in micro-fluidic systems including fluids administration to a body of a patient The device operates by producing characteristics variations in the fluid, or pulses, that are subsequently sensed by more than one detector spaced apart from the point of creation of the mark to derive a flow rate Each pulse comprises a small fluid volume, whose characteristics are different from the mean characteristics of the fluid, such as by composition variations created by electrochemical means, such as by electrolysis of a solvent, electrolysis of a dissolved species, or electrodialysis of a dissolved ionic species, or a thermal variation created by focused electromagnetic radiation The device comprises at least two detectors (also sometimes referred to as sensors) to improve the accuracy of the measurement in varying flow rates, to compensate for errors resulting from the drift of the pulses in the fluid, to compensate for varying or unstable flow rates, and to establish a positive signal for sub-range flow A method of measuring fluid flow rate is proposed where measurements comprising data of one mark from at least two sensor readings plus one other time event are combined to determine the reported flow rateread more
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References
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Patent
High accuracy signal processing for magnetic flowmeter
TL;DR: A magnetic flowmeter for measuring flow of a conductive fluid includes a flow tube assembly adapted to receive a fluid flow and a coil configured to apply a magnetic field in the fluid flow through the flow tube as discussed by the authors.
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Electromagnetic flow probe
TL;DR: An electromagnetic flow probe for measuring fluid flow is described in this paper, featuring interchangeable magnet and electrode lumen structures, and a complex electrode lead pattern is incorporated in a lumen unit through which the fluid flow was conducted.
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In line electromagnetic flow measurement transducer
TL;DR: An electromagnetic type fluid flow meter for measurements of conductive fluids which utilizes an interchangeable disposable electrode sensor assembly with a common magnetic drive assembly is described in this paper, where a tubular member adapted to be connected into a flow line and an electrical connector for providing external electrical connections to electrodes.
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Subsurface tagging system with wired tubulars
TL;DR: In this article, a downhole system and methods including tags configured to provide distinguishable identifiers are set for selective release to a subsurface location, and signal data associated with the detected tags is conveyed to the surface.