公开(公告)号：WO1998013806A1

公开(公告)日：1998-04-02

申请号：PCT/US1997016465

申请日：1997-09-17

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  ANDERSON, Stephen, D. ,  JOHNSON, Theodore, L. ,  JUNK, Brian, S. ,  ORMAN, Michael, A. ,  SCHNAARE, Theodore, H. ,  TETZLAFF, David, E.

IPC: G08C19/02

CPC classification number: H02M7/219 ,  G08C19/02 ,  Y10T307/858 ,  Y10T307/865

Abstract: A field instrument (10) includes an input circuit (26) having a transistor bridge rectifier (Q1, Q2, Q3, Q4) which is couplable to a power supply. The transistor bridge rectifier (Q1, Q2, Q3, Q4) is configured to provide power from the power supply to a remainder of the field instrument (10).

Abstract translation: 现场仪器（10）包括具有可与电源耦合的晶体管桥式整流器（Q1，Q2，Q3，Q4）的输入电路（26）。 晶体管桥式整流器（Q1，Q2，Q3，Q4）被配置为从电源向现场仪器（10）的其余部分提供电力。

公开(公告)号：WO1998006016A1

公开(公告)日：1998-02-12

申请号：PCT/US1997012178

申请日：1997-07-11

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  ZOU, Hehong ,  BRIGHAM, Scott, E.

IPC: G05B23/02

CPC classification number: G05B13/042

Abstract: A process control system (100) controls a non-self regulating process through a control output signal (u(t)) based on a set point YSET and a measured process variable (y(t)). The process control system includes a control circuit (102, 104, 106, 108) having a set point input, a process variable input and a control output. The control circuit generates the control output signal (u(t)) on the control output as a function of the set point YSET received on the set point input and the measured process variable (y(t)) received on the process variable input. An auto-tuning circuit (106) excites the process, estimates a process model based on an intersection between rising and falling asymptotes of the measured process variable (y(t)), and then tunes the control function to the process (110) based on the process model. The auto-tuning circuit obtains robust results, but is computationally simple such that the circuit can be implemented with hardware or software in low-power and low-memory applications, such as in field-mounted controllers.

Abstract translation: 过程控制系统（100）基于设定点YSET和测量过程变量（y（t））通过控制输出信号（u（t））来控制非自调节过程。 过程控制系统包括具有设定点输入，过程变量输入和控制输出的控制电路（102,104,106,108）。 控制电路根据在设定点输入端接收的设定值YSET和在过程变量输入端接收到的测量过程变量（y（t）），产生控制输出上的控制输出信号（u（t））。 自动调谐电路（106）激发该过程，基于测量的过程变量（y（t））的上升和下降渐近线之间的交点估计过程模型，然后基于过程（110）调整控制功能 在过程模型上。 自动调谐电路获得了强大的结果，但是计算上简单，因此电路可以在低功耗和低内存应用中的硬件或软件实现，如现场安装的控制器。

公开(公告)号：WO1997025595A1

公开(公告)日：1997-07-17

申请号：PCT/US1996020898

申请日：1996-12-31

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  WIKLUND, David, E. ,  BISCHOFF, Brian, J.

IPC: G01F01/46

CPC classification number: G01F1/46

Abstract: A transmitter (10) in a process control system for measuring flow rate measures total pressure (PTOT) and differential pressure (h) of process fluid flowing through a process pipe. The static pressure (PSTAT) is determined based upon the total pressure (PTOT). The calculated static pressure is used to determine the fluid density ( rho ) and the gas expansion factor (Y1) of the process fluid flowing in the pipe (12). This information is used to calculate flow rate (Q) of the process fluid.

Abstract translation: 用于测量流量的过程控制系统中的变送器（10）测量流过过程管道的工艺流体的总压力（PTOT）和压差（h）。 静压（PSTAT）是根据总压（PTOT）来确定的。 所计算的静压用于确定在管道（12）中流动的工艺流体的流体密度（rho）和气体膨胀系数（Y1）。 该信息用于计算过程流体的流量（Q）。

公开(公告)号：WO1997012347A1

公开(公告)日：1997-04-03

申请号：PCT/US1996014661

申请日：1996-09-13

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  FRICK, Roger, L. ,  SCHULTE, John, P. ,  TEWFIK, Ahmed, H.

IPC: G08C19/02

CPC classification number: G08C19/10 ,  G08C19/02

Abstract: A transmitter (10) in a process control system includes input/output circuitry (74) for coupling to a process control loop (12). A first sensor (40L) having a first impedance is responsive to a first sensed parameter. A second sensor (40H) having a second impedance is responsive to a sensed parameter. First and second excitation signals (S1, S2) are applied to the first and second sensors (40L, 40H). A summing node (44) sums the outputs (OL, OH) of the first and second sensors (40L, 40H). An analog to digital converter (54) provides a digital output representative of the summed signals. Digital signal processing circuitry (70) coupled to the analog to digital converter (54) provides an output related to the outputs (OL, OH) of the first and second sensors (40L, 40H) to the input/output circuitry (72) for transmission over the process control loop (12).

Abstract translation: 过程控制系统中的发射器（10）包括用于耦合到过程控制回路（12）的输入/输出电路（74）。 具有第一阻抗的第一传感器（40L）响应于第一感测参数。 具有第二阻抗的第二传感器（40H）响应感测参数。 第一和第二激励信号（S1，S2）被施加到第一和第二传感器（40L，40H）。 求和节点（44）对第一和第二传感器（40L，40H）的输出（OL，OH）求和。 模数转换器（54）提供代表求和信号的数字输出。 耦合到模拟数字转换器（54）的数字信号处理电路（70）提供与第一和第二传感器（40L，40H）的输出（OL，OH）相关的输出到输入/输出电路（72），用于 传输过程控制回路（12）。

公开(公告)号：WO1997012211A1

公开(公告)日：1997-04-03

申请号：PCT/US1996015297

申请日：1996-09-25

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  PALAN, Donald, F. ,  MILLER, Jon, D.

IPC: G01F23/284

CPC classification number: H01Q1/225 ,  G01F23/284 ,  G01S13/88 ,  H01P1/08 ,  H01Q1/22 ,  H01Q13/02 ,  H01Q19/08

Abstract: A level sensor assembly (14) is mounted on a flange (24) surrounding a port (16) of a tank (10), and has a waveguide adapter (30, 40) for transmitting microwave energy from a source of microwave energy to an aperture (50) of an antenna (48) on the interior of the tank (34). The waveguide includes apertures (38, 46) that carry microwaves to the antenna (48). A mechanical barrier (54) in a portion (46) of the aperture (38, 46) prevents escape of a fluid under pressure or liquid from the interior of the tank (10), and also serves to reduce impedance mismatch between the air, vapor, or liquid filled waveguide and antenna apertures (38, 46, 50). The adapter (30, 40) includes an adapter plate (40) having a second waveguide aperture (38). The aperture (38) has a process sealed mechanical barrier (62) mounted coaxially with the mechanical barrier (54).

Abstract translation: 水平传感器组件（14）安装在围绕罐（10）的端口（16）的凸缘（24）上，并且具有用于将微波能量从微波能量源传输到波导适配器（30,40）的波导适配器（30,40） 在罐（34）内部的天线（48）的孔（50）。 波导包括将微波携带到天线（48）的孔（38,46）。 孔（38,46）的一部分（46）中的机械屏障（54）防止流体在压力或液体从罐（10）的内部逸出，并且还用于减少空气， 蒸汽或液体填充的波导和天线孔（38,46,50）。 适配器（30,40）包括具有第二波导孔（38）的适配器板（40）。 孔（38）具有与机械屏障（54）同轴安装的过程密封机械屏障（62）。

公开(公告)号：WO1996041243A1

公开(公告)日：1996-12-19

申请号：PCT/US1996008128

申请日：1996-05-31

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  WESTFIELD, Brian, L. ,  ANDERSON, Stephen, D. ,  LOUWAGIE, Bennett, L. ,  PIECHOWSKI, Todd, A.

IPC: G05B19/042

CPC classification number: G05B19/0423 ,  G05B19/4185 ,  G05B2219/25189 ,  G05B2219/25191 ,  G05B2219/31121 ,  G05B2219/31126 ,  G05B2219/31135 ,  G05B2219/33197 ,  Y02P90/18

Abstract: Conversion circuitry (40) for use in a process control system (10) is adapted for coupling to a primary process control loop (26). Digital receiver circuitry (46, 52) in the conversion circuitry (40) receives a digital signal transmitted over the primary process control loop (26) from a field transmitter (22) and responsively provides a digital output. A microprocessor (50) receives the digital output and responsively provides a secondary loop control output. Secondary loop control circuitry (62) for coupling to a secondary process control loop (58) receives the secondary loop control output from the microprocessor (50) and responsively controls current flowing through the secondary process control loop (58). The current flowing through the secondary process control loop (58) is related to the digital signal transmitted by the field transmitter (22).

Abstract translation: 用于过程控制系统（10）的转换电路（40）适于耦合到主过程控制回路（26）。 转换电路（40）中的数字接收器电路（46,52）从现场发射器（22）接收通过主要过程控制回路（26）发送的数字信号，并且响应地提供数字输出。 微处理器（50）接收数字输出并且响应地提供辅助回路控制输出。 用于耦合到次级过程控制回路（58）的二次回路控制电路（62）接收来自微处理器（50）的次级回路控制输出，并且响应地控制流过次级过程控制回路（58）的电流。 流过二级过程控制回路（58）的电流与由现场发射机（22）发送的数字信号有关。

公开(公告)号：WO1996034264A1

公开(公告)日：1996-10-31

申请号：PCT/US1996005721

申请日：1996-04-24

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  OLSON, Mark, H. ,  JOST, Michael, B. ,  BISCHOFF, Brian, J. ,  MOSER, Thomas, M.

IPC: G01L09/00

CPC classification number: G01L19/148 ,  G01L19/0084 ,  G01L19/0636 ,  G01L19/0645 ,  G01L19/0663 ,  G01L19/143 ,  G01L19/147

Abstract: A pressure transmitter (10) includes an isolator mounting assembly (12, 150) for isolating process fluid from an interior cavity (22) of the pressure transmitter (10). The isolator mounting assembly (12, 150) includes an isolator plug (66, 152) for receiving the process fluid line pressure and coupling the line pressure to a sensor cavity (32) formed by a header (68, 154) joined to a distal end of the plug (66, 152). A ring member (70) is attached to the header (68, 154) and the distal end of the plug (66, 152) to reinforce the joint formed between the isolator plug (66, 152) and the header (68, 154). In another embodiment, the isolator mounting assembly (150) includes a base (154) and a support (181) having first and second opposed ends (190, 202). The first end (190) is rigidly bonded to the pressure sensor (184) while an epoxy joint (200) joins the second end (202) of the support (181) to the base (154).

Abstract translation: 压力变送器（10）包括用于将过程流体与压力变送器（10）的内部空腔（22）隔离的隔离器安装组件（12,150）。 隔离器安装组件（12,150）包括隔离器插头（66,152），用于接收过程流体管线压力，并将管路压力耦合到由连接到远端的集管（68,154）形成的传感器腔（32） 插头（66,152）的端部。 环形构件（70）附接到集管（68,154）和插塞（66,152）的远端，以加强形成在隔离器插头（66,152）和插头（68,154）之间的接头， 。 在另一个实施例中，隔离器安装组件（150）包括具有第一和第二相对端（190,202）的基座（154）和支撑件（181）。 第一端（190）刚性地结合到压力传感器（184），而环氧接头（200）将支撑件（181）的第二端（202）连接到基座（154）。

公开(公告)号：WO1996018091A1

公开(公告)日：1996-06-13

申请号：PCT/US1995015769

申请日：1995-12-05

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  PETRICH, William, E. ,  BRODEN, David, A. ,  SUNDET, Paul, C.

IPC: G01L19/00

CPC classification number: F16K27/0263 ,  G01L19/0015 ,  Y10T137/87249 ,  Y10T137/87885

Abstract: A manifold (10) includes a body having generally planar inlet surface (14). The inlet surface (14) includes a first inlet (16) and a second inlet (18) adapted for coupling to a pressurized process fluid. An outlet surface (22) on the manifold (10) is adapted for coupling to a co-planar transmitter and is at angle relative to the inlet surface (14). The manifold (10) includes an equalizing valve surface (24) opposite the outlet surface (22), and a perimeter therebetween. The outlet surface (22) includes first and second outlets (26, 28) in fluid communication with the first and second inlets (16, 18), respectively.

Abstract translation: 歧管（10）包括具有大致平面的入口表面（14）的主体。 入口表面（14）包括适于联接到加压工艺流体的第一入口（16）和第二入口（18）。 歧管（10）上的出口表面（22）适于联接到共面发射器并且相对于入口表面（14）成角度。 歧管（10）包括与出口表面（22）相对的均衡阀表面（24）和其间的周长。 出口表面（22）分别包括与第一和第二入口（16,18）流体连通的第一和第二出口（26,28）。

公开(公告)号：WO1996010734A1

公开(公告)日：1996-04-11

申请号：PCT/US1995012203

申请日：1995-09-12

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  KIELB, John, A. ,  LONGSDORF, Randy, J. ,  EDWARDS, Grant, B. ,  PALAN, Donald, F.

IPC: G01F23/284

CPC classification number: G01F23/284

Abstract: A level sensor (10) for use in a process application measures height (L) of a product (14) in a tank (12). The level meter (10) includes a microwave feedhorn (18) directed into the tank (12), an electronics housing (16) spaced apart from the feedhorn (18) and a microwave waveguide (20) extending therebetween. A microwave transducer (50) in the housing (16) couples to the waveguide (20) and sends and receives microwave signals. A microprocessor (30) in the housing (16) identifies echoes from the microwave signals which are generated and sensed by the microwave transducer (50). The microprocessor (30) determines height (L) of the product (14) based upon a microwave echo from the product (14) and a microwave echo from the feedhorn (18). The microprocessor (30) compensates for the effect of propagation delay through the waveguide (20) on height measurements with the feedhorn echo and provides (18). The microprocessor (30) compensates for the effect of propagation delay through the waveguide (20) on height measurements with the feedhorn echo and provides an output related to height (L) of the product (14) in the tank (12).

Abstract translation: 用于过程应用的液位传感器（10）测量罐（12）中的产品（14）的高度（L）。 液位计（10）包括引导到罐（12）中的微波馈电喇叭（18），与馈电喇叭（18）间隔开的电子器件壳体（16）和在它们之间延伸的微波波导（20）。 壳体（16）中的微波换能器（50）耦合到波导（20）并发送和接收微波信号。 壳体（16）中的微处理器（30）识别由微波换能器（50）产生和感测的微波信号的回波。 微处理器（30）基于来自产品（14）的微波回声和来自馈源（18）的微波回声来确定产品（14）的高度（L）。 微处理器（30）补偿通过波导（20）的传播延迟对带有反馈喇叭回波的高度测量的影响，并提供（18）。 微处理器（30）补偿通过波导（20）的传播延迟对具有馈源喇叭回波的高度测量的影响，并提供与罐（12）中的产品（14）的高度（L）相关的输出。

公开(公告)号：WO1996005493A1

公开(公告)日：1996-02-22

申请号：PCT/US1995009487

申请日：1995-07-27

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  PETERSEN, Eric, P.

IPC: G01L07/08

CPC classification number: G01L19/0645

Abstract: A weld ring (30) for a pressure transmitter (11) welded to a corrosion resistant material (18) at one section (40) of the ring, and welded to a different material at a second section (42) of the weld ring (30). The sections (40, 42) of the weld ring (30) are made of different materials compatible with the materials to which they weld. The sections (40, 42) of the weld ring (30) are explosion welded together to provide a pressure tight, highly reliable interface bond between the two sections (40, 42). The materials of the two sections (40, 42) are essentially incompatible for high temperature fusion welding.

Abstract translation: 一种用于压力变送器（11）的焊接环（30），其在所述环的一个部分（40）处焊接到耐腐蚀材料（18）上，并且在所述焊接环的第二部分（42）处焊接到不同的材料 30）。 焊接环（30）的部分（40,42）由与其焊接的材料相容的不同材料制成。 焊接环（30）的部分（40,42）被爆炸焊接在一起，以在两个部分（40,42）之间提供压力紧密，高度可靠的界面结合。 两段（40,42）的材料对于高温熔焊基本上是不兼容的。