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1.发明授权公开(公告)号：US09395221B2
公开(公告)日：2016-07-19
申请号：US14037915
申请日：2013-09-26
Applicant: Rosemount 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.
Abstract translation: 用于测量管道中的工艺流体的流量的磁流量计包括与配置为向过程流体施加磁场的配管相邻的磁性线圈。 第一和第二电极设置在管内并且电耦合到过程流体并且被配置为感测由于施加的磁场和过程流体的流动而在过程流体中感应的电动势（EMF）。 输入电路耦合到第一和第二电极并提供与所感测的EMF相关的输出。 耦合到输入电路的诊断电路被配置为识别饱和相关状况并且响应地提供诊断输出。 在另一个实施例中，饱和度防止电路防止输入电路的饱和。
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2.发明申请公开(公告)号：US20140260662A1
公开(公告)日：2014-09-18
申请号：US13826839
申请日：2013-03-14
Applicant: ROSEMOUNT INC.
Inventor： Steven Bruce Rogers , Bruce D. Rovner , Scot Ronald Foss
IPC: G01F1/58
Abstract: A magnetic flowmeter comprises a pipe section for process flow, a coil for generating a magnetic field across the pipe section, a current source for energizing the coil to generate the magnetic field at a coil drive frequency, and electrodes for sensing voltage induced across the process flow by the magnetic field. A processor calculates a function of the sensed voltage and generates a flow output based on the function. The processor adjusts an operating parameter of the flowmeter, such as electrode voltage sampling period, the coil drive frequency, or a phase shift, as a function of a sensed electrode-to-electrode or electrode-to-ground complex impedance.
Abstract translation: 磁流量计包括用于工艺流程的管段，用于在管段上产生磁场的线圈，用于激励线圈以产生线圈驱动频率的磁场的电流源，以及用于感测整个过程感应电压的电极 流过磁场。 处理器计算感测电压的功能，并根据该功能生成流量输出。 处理器根据感测到的电极对电极或电极对地面复阻抗来调节流量计的操作参数，例如电极电压采样周期，线圈驱动频率或相移。
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公开(公告)号：US10663331B2
公开(公告)日：2020-05-26
申请号：US14037937
申请日：2013-09-26
Applicant: Rosemount Inc.
Inventor： Scot Ronald Foss , Jared James Dreier , Samuel Ethan Messenger , Kirk Allan Hunter
Abstract: A magnetic flowmeter includes circuitry for sensing coil current, coil voltage, or coil resistance. Based on the sensed coil current, voltage, or resistance, a digital processor determines whether a power limit or a coil current limit is exceeded and either halts operation until it receives a new configuration with a new coil current setpoint, or determines a new coil current setpoint itself and adjusts the magnetic flowmeter to that new coil current setpoint.
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公开(公告)号：US20150082906A1
公开(公告)日：2015-03-26
申请号：US14037937
申请日：2013-09-26
Applicant: Rosemount Inc.
Inventor： Scot Ronald Foss , Jared James Dreier , Samuel Ethan Messenger , Kirk Allan Hunter
IPC: G01F1/58
Abstract: A magnetic flowmeter includes circuitry for sensing coil current, coil voltage, or coil resistance. Based on the sensed coil current, voltage, or resistance, a digital processor determines whether a power limit or a coil current limit is exceeded and either halts operation until it receives a new configuration with a new coil current setpoint, or determines a new coil current setpoint itself and adjusts the magnetic flowmeter to that new coil current setpoint.
Abstract translation: 磁流量计包括用于感测线圈电流，线圈电压或线圈电阻的电路。 基于检测到的线圈电流，电压或电阻，数字处理器确定是否超过功率极限或线圈电流限制，并停止运行，直到其接收到具有新线圈电流设定值的新配置，或确定新的线圈电流 设定值本身并将磁流量计调整到新的线圈电流设定值。
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Patent Agency Ranking
公开(公告)号：US09696188B2
公开(公告)日：2017-07-04
申请号：US13826839
申请日：2013-03-14
Applicant: Rosemount Inc.
Inventor： Steven Bruce Rogers , Bruce D. Rovner , Scot Ronald Foss
Abstract: A magnetic flowmeter comprises a pipe section for process flow, a coil for generating a magnetic field across the pipe section, a current source for energizing the coil to generate the magnetic field at a coil drive frequency, and electrodes for sensing voltage induced across the process flow by the magnetic field. A processor calculates a function of the sensed voltage and generates a flow output based on the function. The processor adjusts an operating parameter of the flowmeter, such as electrode voltage sampling period, the coil drive frequency, or a phase shift, as a function of a sensed electrode-to-electrode or electrode-to-ground complex impedance.
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公开(公告)号：US09163968B2
公开(公告)日：2015-10-20
申请号：US14038065
申请日：2013-09-26
Applicant: Rosemount Inc.
Inventor： Scot Ronald Foss , Jared James Dreier
CPC classification number: G01F1/588 , G01F1/58 , G01F1/60 , G01F15/02 , G01F15/022 , G01F25/0007 , G01R31/02
Abstract: A magnetic flowmeter includes a flowtube arranged to receive a flow of process fluid. A coil is positioned proximate the flowtube and arranged to apply a magnetic field to the process fluid in response to a drive current alternating direction. First and second electrodes are arranged to sense a voltage potential in the process fluid in response to the applied magnetic field. The voltage potential is indicative of flow rate of process fluid through the flowtube. A sensor is coupled to the first and second current paths which has a sensor output related to the drive current. Diagnostic circuitry provides a diagnostic output as a function of a transient change in the sensor output when current flowing through the coil alternates direction.
Abstract translation: 磁流量计包括布置成接收工艺流体流的流管。 线圈被定位在流管附近，并且布置成响应于驱动电流交替方向向过程流体施加磁场。 第一和第二电极布置成响应于所施加的磁场感测过程流体中的电压电位。 电压电位表示通过流量管的工艺流体的流量。 传感器耦合到具有与驱动电流相关的传感器输出的第一和第二电流路径。 当电流流过线圈交替方向时，诊断电路提供诊断输出作为传感器输出瞬态变化的函数。
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公开(公告)号：US20150177035A1
公开(公告)日：2015-06-25
申请号：US14136955
申请日：2013-12-20
Applicant: Rosemount Inc.
Inventor： Bruce D. Rovner , Scot Ronald Foss , Steven B. Rogers
IPC: G01F1/58
CPC classification number: G01F1/584 , G01D21/00 , G01F1/58 , G01F1/60 , G01F25/0007 , G05B13/00 , G06F17/40 , G06F19/00
Abstract: A magnetic flowmeter includes a flowtube with electrodes and field coil and a transmitter that automatically determines an operating setpoint for the magnetic flowmeter based upon sensed coil inductance, sensed coil resistance, a power rating for the transmitter, the flowtube, or both, and selected performance criteria.
Abstract translation: 磁流量计包括具有电极和励磁线圈的流量计和发射器，其基于感测的线圈电感，感测线圈电阻，发射器的额定功率，流量计或两者自动确定用于磁流量计的操作设定值，以及选择的性能 标准
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公开(公告)号：US20150082909A1
公开(公告)日：2015-03-26
申请号：US14038065
申请日：2013-09-26
Applicant: Rosemount Inc.
Inventor： Scot Ronald Foss , Jared James Dreier
CPC classification number: G01F1/588 , G01F1/58 , G01F1/60 , G01F15/02 , G01F15/022 , G01F25/0007 , G01R31/02
Abstract: A magnetic flowmeter includes a flowtube arranged to receive a flow of process fluid. A coil is positioned proximate the flowtube and arranged to apply a magnetic field to the process fluid in response to a drive current alternating direction. First and second electrodes are arranged to sense a voltage potential in the process fluid in response to the applied magnetic field. The voltage potential is indicative of flow rate of process fluid through the flowtube. A sensor is coupled to the first and second current paths which has a sensor output related to the drive current. Diagnostic circuitry provides a diagnostic output as a function of a transient change in the sensor output when current flowing through the coil alternates direction.
Abstract translation: 磁流量计包括布置成接收工艺流体流的流管。 线圈被定位在流管附近，并且布置成响应于驱动电流交替方向向过程流体施加磁场。 第一和第二电极布置成响应于所施加的磁场感测过程流体中的电压电位。 电压电位表示通过流量管的工艺流体的流量。 传感器耦合到具有与驱动电流相关的传感器输出的第一和第二电流路径。 当电流流过线圈交替方向时，诊断电路提供诊断输出作为传感器输出瞬态变化的函数。
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公开(公告)号：US20150082905A1
公开(公告)日：2015-03-26
申请号：US14037915
申请日：2013-09-26
Applicant: Rosemount Inc.
Inventor： Scot Ronald Foss , Bruce David Rovner , Jared James Dreier
IPC: G01F1/58
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.
Abstract translation: 用于测量管道中的工艺流体的流量的磁流量计包括与配置为向过程流体施加磁场的配管相邻的磁性线圈。 第一和第二电极设置在管内并且电耦合到过程流体并且被配置为感测由于施加的磁场和过程流体的流动而在过程流体中感应的电动势（EMF）。 输入电路耦合到第一和第二电极并提供与所感测的EMF相关的输出。 耦合到输入电路的诊断电路被配置为识别饱和相关状况并且响应地提供诊断输出。 在另一个实施例中，饱和度防止电路防止输入电路的饱和。
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