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公开(公告)号：US20240280390A1
公开(公告)日：2024-08-22
申请号：US18582923
申请日：2024-02-21
Applicant: Micro Motion, Inc.
Inventor： Bruce David Rovner , Kirk Allan Hunter , Jared James Dreier , Scot Ronald Foss , Samuel Ethan Messenger
Abstract: A magnetic flow meter for measuring flow of a process fluid in a pipe, the flow meter includes a magnetic coil disposed adjacent to the pipe configured to apply a magnetic field to the process fluid. First and second electrodes disposed within the pipe which are electrically coupled to the process fluid and configured to sense an electromotive force (EMF) induced in the process fluid due to the applied magnetic field and flow of the process fluid and responsively provide respective first and second electrode signals. Output circuitry coupled to the first and second electrodes provides an output related to the sensed EMF. Diagnostic circuitry provides an electrode referenced diagnostic signal. A method is also provided.
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公开(公告)号：US20210072053A1
公开(公告)日：2021-03-11
申请号：US16587886
申请日：2019-09-30
Applicant: MICRO MOTION, INC.
Inventor： Masoud Ameri , Scot Ronald Foss , Jared James Dreier
Abstract: A magnetic flowmeter includes a flow tube assembly, an electromotive force (EMF) sensor, a power amplifier, a current sampling circuit, and a controller. The flow tube assembly receives the fluid flow, and includes a coil configured to receive a coil current and induce an EMF in the fluid flow that is proportional to the flow rate. The EMF sensor generates an output indicating the induced EMF. The power amplifier is configured to generate unfiltered current pulses at a first frequency. The power amplifier includes a low pass filter that attenuates the unfiltered current pulses to form coil current pulses at a second frequency that form the coil current. The current sampling circuit samples the coil current pulses at a sampling frequency. The controller is configured to change a relationship between the sampling frequency and the first frequency, and adjust the coil current based on the samples.
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Patent Agency Ranking
公开(公告)号：US20160290844A1
公开(公告)日：2016-10-06
申请号：US15181994
申请日：2016-06-14
Applicant: Micro Motion, Inc.
Inventor： Scot Ronald Foss , Bruce David Rovner , Jared James Dreier
Abstract: A magnetic flowmeter for measuring flow of a process fluid in a pipe includes a magnetic coil disposed adjacent to the pipe configured to apply a magnetic field to the process fluid. First and second electrodes are disposed within the pipe and electrically coupled to the process fluid and configured to sense an electromotive force (EMF) induced in the process fluid due to the applied magnetic field and flow of the process fluid. Input circuitry is coupled to the first and second electrodes and provides an output related to the sensed EMF. Diagnostic circuitry coupled to the input circuitry is configured to identify a saturation related condition and responsively provide a diagnostic output. In another embodiment, saturation prevention circuitry prevents saturation of the input circuitry.
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公开(公告)号：US10935402B2
公开(公告)日：2021-03-02
申请号：US16123495
申请日：2018-09-06
Applicant: Micro Motion, Inc.
Inventor： Scot Ronald Foss , Andrew Thomas Kline
Abstract: A magnetic flow meter includes electrode sensors generating a sensor signal indicative of flow of a liquid through a conduit. A noise identification module identifies a noise level in the sensor signal and a contaminant identification module uses the noise level to determine whether there is a contaminant in the liquid in the conduit.
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公开(公告)号：US09952075B2
公开(公告)日：2018-04-24
申请号：US15181994
申请日：2016-06-14
Applicant: Micro Motion, Inc.
Inventor： Scot Ronald Foss , Bruce David Rovner , Jared James Dreier
Abstract: A magnetic flowmeter for measuring flow of a process fluid in a pipe includes a magnetic coil disposed adjacent to the pipe configured to apply a magnetic field to the process fluid. First and second electrodes are disposed within the pipe and electrically coupled to the process fluid and configured to sense an electromotive force (EMF) induced in the process fluid due to the applied magnetic field and flow of the process fluid. Input circuitry is coupled to the first and second electrodes and provides an output related to the sensed EMF. Diagnostic circuitry coupled to the input circuitry is configured to identify a saturation related condition and responsively provide a diagnostic output. In another embodiment, saturation prevention circuitry prevents saturation of the input circuitry.
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公开(公告)号：US11181404B2
公开(公告)日：2021-11-23
申请号：US16587886
申请日：2019-09-30
Applicant: Micro Motion, Inc.
Inventor： Masoud Ameri , Scot Ronald Foss , Jared James Dreier
Abstract: A magnetic flowmeter includes a flow tube assembly, an electromotive force (EMF) sensor, a power amplifier, a current sampling circuit, and a controller. The flow tube assembly receives the fluid flow, and includes a coil configured to receive a coil current and induce an EMF in the fluid flow that is proportional to the flow rate. The EMF sensor generates an output indicating the induced EMF. The power amplifier is configured to generate unfiltered current pulses at a first frequency. The power amplifier includes a low pass filter that attenuates the unfiltered current pulses to form coil current pulses at a second frequency that form the coil current. The current sampling circuit samples the coil current pulses at a sampling frequency. The controller is configured to change a relationship between the sampling frequency and the first frequency, and adjust the coil current based on the samples.
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公开(公告)号：US20200080877A1
公开(公告)日：2020-03-12
申请号：US16123495
申请日：2018-09-06
Applicant: Micro Motion, Inc.
Inventor： Scot Ronald Foss , Andrew Thomas Kline
Abstract: A magnetic flow meter includes electrode sensors generating a sensor signal indicative of flow of a liquid through a conduit. A noise identification module identifies a noise level in the sensor signal and a contaminant identification module uses the noise level to determine whether there is a contaminant in the liquid in the conduit.
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