公开(公告)号：US09175993B2

公开(公告)日：2015-11-03

申请号：US14038117

申请日：2013-09-26

Applicant: Rosemount Inc.

Inventor： Kirk Allan Hunter ,  Jordan Dennis Lucht ,  Jared James Dreier ,  Bruce David Rovner ,  Tim Scott Lemke

IPC: G01F1/58 ,  G01F1/60 ,  H04B10/80

CPC classification number: G01F1/60 ,  G01F1/58 ,  G01F1/588 ,  G05B2219/15133 ,  G05B2219/25458 ,  H04B10/801 ,  H04B10/802

Abstract: An industrial process control field device includes a process variable transducer configured to sense or control a process variable. Field device circuitry is configured to couple to the process variable transducer and communicate information related to the process variable to another location. The field device circuitry includes an optical isolator having transmit circuitry on a first side of a galvanic isolation configured to transmit an optical signal which is pulsed on and off across the isolation. Receive circuitry is located on a second side of galvanic isolation and configured to receive the optical signal with an optical sensor. The optical sensor enters an “on” state when it receives a pulse and is otherwise in an “off” state. The receive circuitry provides a secondary side output based upon the received optical signal. The receive circuitry enters in a low power state when the optical sensor is in the “off” state.

Abstract translation: 工业过程控制现场设备包括被配置为感测或控制过程变量的过程变量变换器。 现场设备电路被配置为耦合到过程变量传感器并将与过程变量相关的信息传递到另一位置。 现场设备电路包括光隔离器，其具有在电隔离器的第一侧上的发射电路，其被配置为传输跨越隔离物脉冲通过和关闭的光信号。 接收电路位于电隔离的第二侧，并被配置为用光学传感器接收光信号。 当光学传感器接收到脉冲并处于“关闭”状态时，该光学传感器进入“接通”状态。 接收电路基于所接收的光信号提供次级侧输出。 当光学传感器处于“关闭”状态时，接收电路进入低功率状态。

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

CPC classification number: G01F1/588 ,  G01F1/60

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。

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

IPC: G01F1/60 ,  G01F1/58

CPC classification number: G01F1/588 ,  G01F1/60

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。

公开(公告)号：US20150082904A1

公开(公告)日：2015-03-26

申请号：US14037983

申请日：2013-09-26

Applicant: Rosemount Inc.

Inventor： Kirk Allan Hunter ,  Jordan Dennis Lucht ,  Jared James Dreier ,  Bruce David Rovner

IPC: G01F1/60 ,  G01J1/44

CPC classification number: G01F1/60 ,  G01D21/00 ,  G01F1/588 ,  G01J1/44 ,  H04Q2209/88

Abstract: An industrial process variable transmitter includes a process variable sensor configured to sense a process variable. Measurement circuitry is coupled to the process variable sensor and provides a measured output as a function of the process variable. Output circuitry includes a loop connection configured to couple to a process control loop. An optical sensor receives the measured output from the measurement circuitry. A switching device applies pulses to the process control loop in response to an output from the optical sensor. Power supply circuitry powers the optical sensor, a comparator, and/or the switching device with power received from the process control loop and loop connection.

Abstract translation: 工业过程变量变送器包括被配置为感测过程变量的过程变量传感器。 测量电路耦合到过程变量传感器，并提供作为过程变量的函数的测量输出。 输出电路包括被配置为耦合到过程控制回路的回路连接。 光学传感器接收来自测量电路的测量输出。 开关装置响应于来自光学传感器的输出将脉冲施加到过程控制回路。 电源电路为光学传感器，比较器和/或具有从过程控制回路和回路连接接收的功率的开关器件供电。

公开(公告)号：US09228869B2

公开(公告)日：2016-01-05

申请号：US14037983

申请日：2013-09-26

Applicant: Rosemount Inc.

Inventor： Kirk Allan Hunter ,  Jordan Dennis Lucht ,  Jared James Dreier ,  Bruce David Rovner

IPC: G01F1/56 ,  G01F1/716 ,  G01P5/08 ,  G01F1/60 ,  G01D21/00 ,  G01F1/58 ,  G01J1/44

CPC classification number: G01F1/60 ,  G01D21/00 ,  G01F1/588 ,  G01J1/44 ,  H04Q2209/88

Abstract: An industrial process variable transmitter includes a process variable sensor configured to sense a process variable. Measurement circuitry is coupled to the process variable sensor and provides a measured output as a function of the process variable. Output circuitry includes a loop connection configured to couple to a process control loop. An optical sensor receives the measured output from the measurement circuitry. A switching device applies pulses to the process control loop in response to an output from the optical sensor. Power supply circuitry powers the optical sensor, a comparator, and/or the switching device with power received from the process control loop and loop connection.

Abstract translation: 工业过程变量变送器包括被配置为感测过程变量的过程变量传感器。 测量电路耦合到过程变量传感器，并提供作为过程变量的函数的测量输出。 输出电路包括被配置为耦合到过程控制回路的回路连接。 光学传感器接收来自测量电路的测量输出。 开关装置响应于来自光学传感器的输出将脉冲施加到过程控制回路。 电源电路为光学传感器，比较器和/或具有从过程控制回路和回路连接接收的功率的开关器件供电。

公开(公告)号：US20150082907A1

公开(公告)日：2015-03-26

申请号：US14038117

申请日：2013-09-26

Applicant: Rosemount Inc.

Inventor： Kirk Allan Hunter ,  Jordan Dennis Lucht ,  Jared James Dreier ,  Bruce David Rovner ,  Tim Scott Lemke

IPC: G01F1/60

CPC classification number: G01F1/60 ,  G01F1/58 ,  G01F1/588 ,  G05B2219/15133 ,  G05B2219/25458 ,  H04B10/801 ,  H04B10/802

Abstract: An industrial process control field device includes a process variable transducer configured to sense or control a process variable. Field device circuitry is configured to couple to the process variable transducer and communicate information related to the process variable to another location. The field device circuitry includes an optical isolator having transmit circuitry on a first side of a galvanic isolation configured to transmit an optical signal which is pulsed on and off across the isolation. Receive circuitry is located on a second side of galvanic isolation and configured to receive the optical signal with an optical sensor. The optical sensor enters an “on” state when it receives a pulse and is otherwise in an “off” state. The receive circuitry provides a secondary side output based upon the received optical signal. The receive circuitry enters in a low power state when the optical sensor is in the “off” state.

Abstract translation: 工业过程控制现场设备包括被配置为感测或控制过程变量的过程变量变换器。 现场设备电路被配置为耦合到过程变量传感器并将与过程变量相关的信息传递到另一位置。 现场设备电路包括光隔离器，其具有在电隔离器的第一侧上的发射电路，其被配置为传输跨越隔离物脉冲通过和关闭的光信号。 接收电路位于电隔离的第二侧，并被配置为用光学传感器接收光信号。 当光学传感器接收到脉冲并处于“关闭”状态时，该光学传感器进入“接通”状态。 接收电路基于所接收的光信号提供次级侧输出。 当光学传感器处于“关闭”状态时，接收电路进入低功率状态。