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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
申请人： Rosemount Inc.
摘要： 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.
摘要翻译： 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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公开(公告)号：US10075246B2
公开(公告)日：2018-09-11
申请号：US14037852
申请日：2013-09-26
申请人： Rosemount Inc.
CPC分类号： H04B10/802 , H05K1/0256 , H05K1/0274 , H05K3/0047 , H05K3/32 , H05K2201/09036 , H05K2201/10121 , H05K2201/10545 , Y10T29/4913
摘要： An optical isolator is provided. The optical isolator includes a printed circuit board having a first surface and a second surface opposite the first surface. The printed circuit board has a recess extending only partially through the board. The first photoelement has an active surface and is mounted relative to the first surface of the printed circuit board. A second photoelement has an active surface and is mounted relative to the second surface. The second photoelement is configured to interact with the first photoelement. At least one of the first and second photoelements has its active surface disposed at least partially in the recess. A portion of the printed circuit board is interposed between the first and second photoelements.
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公开(公告)号：US20150083942A1
公开(公告)日：2015-03-26
申请号：US14037852
申请日：2013-09-26
申请人： Rosemount Inc.
CPC分类号： H04B10/802 , H05K1/0256 , H05K1/0274 , H05K3/0047 , H05K3/32 , H05K2201/09036 , H05K2201/10121 , H05K2201/10545 , Y10T29/4913
摘要： An optical isolator is provided. The optical isolator includes a printed circuit board having a first surface and a second surface opposite the first surface. The printed circuit board has a recess extending only partially through the board. The first photoelement has an active surface and is mounted relative to the first surface of the printed circuit board. A second photoelement has an active surface and is mounted relative to the second surface. The second photoelement is configured to interact with the first photoelement. At least one of the first and second photoelements has its active surface disposed at least partially in the recess. A portion of the printed circuit board is interposed between the first and second photoelements.
摘要翻译： 提供光隔离器。 光隔离器包括具有第一表面和与第一表面相对的第二表面的印刷电路板。 印刷电路板具有仅部分延伸穿过该板的凹部。 第一光电元件具有有源表面并相对于印刷电路板的第一表面安装。 第二光电元件具有活性表面并相对于第二表面安装。 第二光元件配置成与第一光电元件相互作用。 第一和第二光电元件中的至少一个具有至少部分地设置在凹部中的其活性表面。 印刷电路板的一部分介于第一和第二光电元件之间。
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4.发明申请INDUSTRIAL PROCESS VARIABLE TRANSMITTER WITH ISOLATED POWER SCAVENGING INTRINSICALLY SAFE PULSE OUTPUT CIRCUITRY 有权具有隔离电源的工业过程变量变送器本质安全脉冲输出电路公开(公告)号：US20150082904A1
公开(公告)日：2015-03-26
申请号：US14037983
申请日：2013-09-26
申请人： Rosemount Inc.
CPC分类号： G01F1/60 , G01D21/00 , G01F1/588 , G01J1/44 , H04Q2209/88
摘要： 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.
摘要翻译： 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。
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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
申请人： Rosemount Inc.
摘要： 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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6.发明授权Industrial process variable transmitter with isolated power scavenging intrinsically safe pulse output circuitry 有权具有隔离电源的工业过程变量变送器本征安全脉冲输出电路公开(公告)号：US09228869B2
公开(公告)日：2016-01-05
申请号：US14037983
申请日：2013-09-26
申请人： Rosemount Inc.
CPC分类号： G01F1/60 , G01D21/00 , G01F1/588 , G01J1/44 , H04Q2209/88
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20150082907A1
公开(公告)日：2015-03-26
申请号：US14038117
申请日：2013-09-26
申请人： Rosemount Inc.
发明人： Kirk Allan Hunter , Jordan Dennis Lucht , Jared James Dreier , Bruce David Rovner , Tim Scott Lemke
IPC分类号： G01F1/60
CPC分类号： G01F1/60 , G01F1/58 , G01F1/588 , G05B2219/15133 , G05B2219/25458 , H04B10/801 , H04B10/802
摘要： 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.
摘要翻译： 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。
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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
申请人： Rosemount Inc.
IPC分类号： G01F1/58
摘要： 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.
摘要翻译： 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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公开(公告)号：US09175993B2
公开(公告)日：2015-11-03
申请号：US14038117
申请日：2013-09-26
申请人： Rosemount Inc.
发明人： Kirk Allan Hunter , Jordan Dennis Lucht , Jared James Dreier , Bruce David Rovner , Tim Scott Lemke
CPC分类号： G01F1/60 , G01F1/58 , G01F1/588 , G05B2219/15133 , G05B2219/25458 , H04B10/801 , H04B10/802
摘要： 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.
摘要翻译： 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。
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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
申请人： Rosemount Inc.
CPC分类号： G01F1/588 , G01F1/58 , G01F1/60 , G01F15/02 , G01F15/022 , G01F25/0007 , G01R31/02
摘要： 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.
摘要翻译： 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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