公开(公告)号：WO2015047579A1

公开(公告)日：2015-04-02

申请号：PCT/US2014/051073

申请日：2014-08-14

Applicant: ROSEMOUNT INC.

Inventor： FOSS, Scot Ronald ,  DREIER, Jared James ,  MESSENGER, Samuel Ethan ,  HUNTER, Kirk Allan

IPC: G01F1/58 ,  G01F1/60

CPC classification number: G01F1/60 ,  G01F25/0007

Abstract: A magnetic flowmeter 10 includes circuitry 46, 48 for sensing coil current, coil voltage, or coil resistance. Based on the sensed coil current, voltage, or resistance, a digital processor 22 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 10 to that new coil current setpoint.

Abstract translation: 磁流量计10包括用于感测线圈电流，线圈电压或线圈电阻的电路46,48。 基于检测到的线圈电流，电压或电阻，数字处理器22确定是否超过功率极限或线圈电流极限，并且停止运行，直到其接收到具有新的线圈电流设定点的新配置，或者确定新的线圈 电流设定值本身，并将磁流量计10调整到新的线圈电流设定值。

公开(公告)号：WO2015094419A1

公开(公告)日：2015-06-25

申请号：PCT/US2014/051075

申请日：2014-08-14

Applicant: ROSEMOUNT INC.

Inventor： ROVNER, Bruce D. ,  FOSS, Scot Ronald ,  ROGERS, Steven B.

IPC: G01F1/58 ,  G01F1/60

CPC classification number: G01F1/584 ,  G01D21/00 ,  G01F1/58 ,  G01F1/60 ,  G01F25/0007 ,  G05B13/00 ,  G06F17/40 ,  G06F19/00

Abstract: A magnetic flowmeter (10) includes a flowtube (10A) with electrodes (16A, 16B) and field coil (18A, 18B) and a transmitter (10B) that automatically determines an operating setpoint for the magnetic flowmeter (10) based upon sensed coil inductance, sensed coil resistance, a power rating for the transmitter (10B), the flowtube (10A), or both, and selected performance criteria.

Abstract translation: 磁流量计（10）包括具有电极（16A，16B）和励磁线圈（18A，18B）的流量管（10A）和根据感测线圈自动确定磁流量计（10）的工作设定点的发射器（10B） 电感，感测线圈电阻，发射器（10B），流量管（10A）或两者的额定功率，以及选定的性能标准。

公开(公告)号：WO2014159865A1

公开(公告)日：2014-10-02

申请号：PCT/US2014/025357

申请日：2014-03-13

Applicant: ROSEMOUNT INC.

Inventor： ROGERS, Steven Bruce ,  ROVNER, Bruce D. ,  FOSS, Scot Ronald

IPC: G01F1/56 ,  G01F1/60

CPC classification number: G01F1/60 ,  G01F1/58

Abstract: A magnetic flowmeter 10 comprises a pipe section 12 for process flow, a coil 18A, 18B for generating a magnetic field across the pipe section 12, a current source 24 for energizing the coil to generate the magnetic field at a coil drive frequency, and electrodes 16A, 16B for sensing voltage induced across the process flow by the magnetic field. A processor 22 calculates a function of the sensed voltage and generates a flow output based on the function. The processor 22 adjusts an operating parameter of the flowmeter 10, 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10包括用于工艺流程的管段12，用于在管段12上产生磁场的线圈18A，18B，用于激励线圈以产生线圈驱动频率的磁场的电流源24和电极 用于感测通过磁场在工艺流程上感应的电压的16A，16B。 处理器22计算感测电压的功能，并且基于该功能产生流量输出。 处理器22根据检测到的电极对电极或电极对地面复阻抗来调节流量计10的操作参数，例如电极电压采样周期，线圈驱动频率或相移。