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Magnetic flowmeter with noise adaptive dead time

A dead time, flowmeter technology, applied in the application of electromagnetic flowmeter to detect fluid flow, volume/mass flow generated by electromagnetic effect, volume measurement, etc., can solve the problem of signal noise sensitivity and so on

Pending Publication Date: 2021-03-16
MICRO MOTION INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, some environments are more sensitive to signal noise

Method used

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  • Magnetic flowmeter with noise adaptive dead time
  • Magnetic flowmeter with noise adaptive dead time
  • Magnetic flowmeter with noise adaptive dead time

Examples

Experimental program
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Embodiment Construction

[0011] figure 1 A typical environment 100 for a magnetic flow meter 102 is illustrated. Magnetic flow meter 102 is coupled to a process line, which is schematically illustrated at line 104 and is also coupled to control valve 112 . Magnetic flow meter 102 is configured to provide a flow output related to process fluid flow through line 104 during the process. Examples of such fluids include slurries and liquids in chemical processing plants, pulp processing plants, pharmaceutical processing plants and other fluid processing plants.

[0012] The magnetic flow meter 102 includes an electronics housing 120 connected to the flow tube 108 . Magnetic flowmeter 102 output is configured for transmission over a relatively long distance to a controller or indicator via process communication link 106 . In a typical processing plant, communication link 106 may employ digital communication protocols, analog communication signals, or a combination thereof. The same or additional process...

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Abstract

A magnetic flowmeter includes at least one coil configured to generate a magnetic field within a process fluid flow. A pair of electrodes is configured to detect an electromotive force within the process fluid flow in response to the magnetic field. Measurement circuitry is operably coupled to the pair of electrodes and configured to provide an indication of the detected electromotive force. A processor is coupled to the measurement circuitry and is configured to receive the indication of the detected electromotive force and an indication of process noise. The processor is configured to changea dead time parameter based on the indication of process noise and provide a process fluid flow output based on the indication of detected electromotive force and the dead time parameter.

Description

technical field [0001] The present invention relates to magnetic flow meters and methods of operating magnetic flow meters. Background technique [0002] Magnetic flow meters (or magnetic gauges) measure flow by applying Faraday's law (electromagnetic effect). Magnetic flowmeters excite one or more coils by passing an excitation current through a field winding, thereby generating a magnetic field across an electrically isolated flow of conductive process fluid. An electromotive force (EMF) is generated by the flowing process fluid passing through the magnetic field. The induced voltage (potential) across the flowing process fluid and relative to the rest of the process fluid can be readily measured by one or more conductive electrodes in contact with the flowing process fluid. Volume flow is proportional to the flow velocity and the cross-sectional area of ​​the flow tube. The flow rate is proportional to the electrode voltage potential (EV), which is proportional to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/58G01F15/00
CPCG01F1/58G01F15/00G01D3/032G01F1/60G01F15/003G01F1/584G01F1/588
Inventor 斯科特·R·福斯安德鲁·T·克莱恩
Owner MICRO MOTION INC