公开(公告)号：WO1995006857A1

公开(公告)日：1995-03-09

申请号：PCT/US1994009421

申请日：1994-08-18

Applicant: ROSEMOUNT, INC.

Inventor： ROSEMOUNT, INC. ,  ROVNER, Bruce, D. ,  COURSOLLE, Thomas, P.

IPC: G01F01/60

CPC classification number: G01F1/60 ,  G01F1/002

Abstract: An electromagnetic fluid flowmeter (26) includes empty pipe detection circuitry. The empty pipe detection circuitry applies a common mode asynchronous signal into a pair of electrodes (16A, 16B) in the flowmeter (26). Impedance of fluid is determined by measuring the magnitude of the asynchronous signal between an electrode (16A, 16B) and electrical ground. Impedance is used to determine an empty pipe condition.

Abstract translation: 电磁流体流量计（26）包括空管检测电路。 空管检测电路将共模异步信号施加到流量计（26）中的一对电极（16A，16B）中。 通过测量电极（16A，16B）和电气接地之间的异步信号的大小来确定流体的阻抗。 阻抗用于确定空管状态。

公开(公告)号：WO2015142532A1

公开(公告)日：2015-09-24

申请号：PCT/US2015/018880

申请日：2015-03-05

Applicant: ROSEMOUNT INC.

Inventor： ROVNER, Bruce, D. ,  MESSENGER, Samuel, E. ,  DREIER, Jared, J. ,  BEYL, John, C.

IPC: G01F1/56

CPC classification number: G01F1/60 ,  G01F1/586

Abstract: A flowtube assembly (200) for a magnetic flowmeter (102) is provided. The flowtube assembly (200) includes a flowtube (202) configured to receive a flow of process fluid. A magnetic core (224) is mounted relative to the flowtube (202) and includes a plurality of layers (300) of a magnetically permeable material. Each layer (300) is substantially planar and is electrically insulated from others of the plurality of layers (300). A coil (216) is disposed to generate a magnetic field having field lines that are substantially orthogonal to the plane of each layer (300).

Abstract translation: 提供了一种用于磁流量计（102）的流管组件（200）。 流量管组件（200）包括配置成接收工艺流体流的流量管（202）。 磁芯（224）相对于流量管（202）安装并且包括多个可渗透材料层（300）。 每个层（300）基本上是平面的并且与多个层（300）中的其它层电绝缘。 设置线圈（216）以产生具有与每层（300）的平面基本正交的场线的磁场。

公开(公告)号：WO2012021482A1

公开(公告)日：2012-02-16

申请号：PCT/US2011/047024

申请日：2011-08-09

Applicant: ROSEMOUNT INC. ,  ROVNER, Bruce, D. ,  FOSS, Scot, R.

Inventor： ROVNER, Bruce, D. ,  FOSS, Scot, R.

IPC: G01F1/60

CPC classification number: G01F1/72 ,  G01F1/60

Abstract: A process variable transmitter (10) includes a sensor drive controller (22) that outputs a sensor drive signal that is used to drive a sensor (22) that senses a process variable. The sensor drive controller (20) changes the frequency of the sensor drive signal to avoid frequencies and associated harmonics at which noise occurs and which could interfere with the sensor signal.

Abstract translation: 过程变量发送器（10）包括传感器驱动控制器（22），其传送用于驱动感测过程变量的传感器（22）的传感器驱动信号。 传感器驱动控制器（20）改变传感器驱动信号的频率，以避免发生噪声的频率和相关谐波，并且可能干扰传感器信号。

公开(公告)号：WO1990013860A1

公开(公告)日：1990-11-15

申请号：PCT/US1990002178

申请日：1990-04-20

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  ROVNER, Bruce, D.

IPC: G05D16/00

CPC classification number: G05D16/2013 ,  Y10T137/7761

Abstract: A current-to-pressure converter (50) sets line pressure to a desired pressure indicated by the current. A circuit (56) senses the line pressure and the current, receives compensation, and outputs a compensated difference between line and desired pressures. A first driver circuit (64) provides actuator drive based on the compensated output. The actuator (68) controls the line pressure, but presents a temperature sensitive, reactive load to the actuator drive. A simulated load (76) simulates a resistive part of the actuator load. A second driver (78) provides simulated drive to the simulated load. The second driver (78) generates the compensation which simulates actuator drive parameters, but is isolated from reactive effects and temperature sensitivity of the actuator (68).

公开(公告)号：WO2016003801A1

公开(公告)日：2016-01-07

申请号：PCT/US2015/037991

申请日：2015-06-26

Applicant: ROSEMOUNT INC.

Inventor： ROVNER, Bruce, D. ,  ROGERS, Steven, B.

IPC: G01F1/56 ,  G01F15/00

CPC classification number: G01F1/584 ,  G01F1/586 ,  G01F1/588

Abstract: A flowtube assembly (10) for a magnetic flowmeter is provided. The flowtube assembly (10) includes a tube (12) extending from a first mounting flange (14) to a second mounting flange (16). Each of the first and second mounting flanges (14,16) has a pipe flange facing surface (15, 17) for mounting to a respective pipe flange. A coil chamber (42) is disposed outside the tube (12), between the first and second mounting flanges (14,16). The coil chamber (42) has at least one coil (40) located inside that is configured to generate a magnetic field within the tube (12). A liner/electrode module (22) is positioned within the tube (12) and has a non- conductive liner, at least one electrode (50, 51) and at least one electrode conductor (76,78). The non-conductive liner extends from the first mounting flange (14) to the second mounting flange (16). The at least one electrode (50, 51) is positioned in the non-conductive liner to interact with a conductive process fluid. The electrode conductor (76,78) extends from the at least one electrode (50, 51) to an interconnect tab (24) disposed adjacent the pipe facing flange surface of one of the first and second mounting flanges (14,16). The liner/electrode module (22) is positionable within the tube (12).

Abstract translation: 提供一种用于磁流量计的流管组件（10）。 流管组件（10）包括从第一安装凸缘（14）延伸到第二安装凸缘（16）的管（12）。 第一和第二安装凸缘（14,16）中的每一个具有用于安装到相应的管道凸缘的管状法兰面对表面（15,17）。 在第一和第二安装凸缘（14,16）之间的管（12）的外侧设置有线圈室（42）。 线圈室（42）具有位于其内的至少一个线圈（40），其被配置成在管（12）内产生磁场。 衬套/电极模块（22）定位在管（12）内并且具有非导电衬垫，至少一个电极（50,51）和至少一个电极导体（76,78）。 非导电衬套从第一安装凸缘（14）延伸到第二安装凸缘（16）。 至少一个电极（50,51）被定位在非导电衬垫中以与导电工艺流体相互作用。 所述电极导体（76,78）从所述至少一个电极（50,51）延伸到邻近所述第一和第二安装凸缘（14,16）之一的面向对面的法兰表面设置的互连突片（24）。 衬套/电极模块（22）可定位在管（12）内。

公开(公告)号：WO1992002066A1

公开(公告)日：1992-02-06

申请号：PCT/US1991005109

申请日：1991-07-19

Applicant: ROSEMOUNT INC.

Inventor： ROSEMOUNT INC. ,  ROVNER, Bruce, D.

IPC: H02H09/02

CPC classification number: H02H11/002 ,  H02H9/008 ,  H02H9/025

Abstract: A process control instrument (10) receiving a DC current from a two wire loop (11, 43) having overcurrent protection (16, 52) and reverse current protection (20, 54) circuits interposed between a two wire loop (11, 43) and a process control device (24) for reducing the incidence of damage or degradation to the process control device (24) from excessive and reverse polarity currents from the loop. The overcurrent protection circuit (16, 52) comprises device current flowing through a first current sensing circuit (34, 60) which generates a first output which controls impedance of a current diverting circuit (38, 62). The impedance of the current diverting circuit controls the flow of a shunt current shunted back to the two wire loop (11, 43). Shunt current flowing through a second current sensing circuit (13, 50) generates a second output which controls impedance of a first variable impedance circuit (32, 70). The first variable impedance circuit (32, 70) conducts the device current and limits device current flowing through the process control device (24) to a predetermined range. A potential sensing circuit (18, 94) in the reverse current protection circuit (20, 54) senses a potential induced across the process control device (24) and generates a third output which is indicative of polarity of device current. The third output controls impedance of a second variable impedance circuit (30, 56) which also conducts the device current. The second variable impedance circuit (30, 56) reduces the flow of reverse polarity current through the process control device (24) while having little effect on normal operation of the process control instrument (10).

公开(公告)号：EP2603778A1

公开(公告)日：2013-06-19

申请号：EP11758589.3

申请日：2011-08-09

Applicant: Rosemount, Inc.

Inventor： ROVNER, Bruce, D. ,  FOSS, Scot, R.

IPC: G01F1/60

Abstract: A process variable transmitter includes a sensor drive controller that outputs a sensor drive signal that is used to drive a sensor that senses a process variable. The sensor drive controller changes the frequency of the sensor drive signal to avoid frequencies and associated harmonics at which noise occurs and which could interfere with the sensor signal.

公开(公告)号：EP0540634B1

公开(公告)日：1996-08-28

申请号：EP91913991.5

申请日：1991-07-19

Applicant: ROSEMOUNT INC.

Inventor： ROVNER, Bruce, D.

IPC: H02H9/02

CPC classification number: H02H11/002 ,  H02H9/008 ,  H02H9/025

Abstract: A process control instrument (10) receiving a DC current from a two wire loop (11, 43) having overcurrent protection (16, 52) and reverse current protection (20, 54) circuits interposed between a two wire loop (11, 43) and a process control device (24) for reducing the incidence of damage or degradation to the process control device (24) from excessive and reverse polarity currents from the loop. The overcurrent protection circuit (16, 52) comprises device current flowing through a first current sensing circuit (34, 60) which generates a first output which controls impedance of a current diverting circuit (38, 62). The impedance of the current diverting circuit controls the flow of a shunt current shunted back to the two wire loop (11, 43). Shunt current flowing through a second current sensing circuit (13, 50) generates a second output which controls impedance of a first variable impedance circuit (32, 70). The first variable impedance circuit (32, 70) conducts the device current and limits device current flowing through the process control device (24) to a predetermined range. A potential sensing circuit (18, 94) in the reverse current protection circuit (20, 54) senses a potential induced across the process control device (24) and generates a third output which is indicative of polarity of device current. The third output controls impedance of a second variable impedance circuit (30, 56) which also conducts the device current. The second variable impedance circuit (30, 56) reduces the flow of reverse polarity current through the process control device (24) while having little effect on normal operation of the process control instrument (10).

公开(公告)号：EP0490898B1

公开(公告)日：1995-06-21

申请号：EP90908082.2

申请日：1990-04-20

Applicant: ROSEMOUNT INC.

Inventor： ROVNER, Bruce, D.

IPC: G05D16/00

CPC classification number: G05D16/2013 ,  Y10T137/7761

Abstract: A current-to-pressure converter (50) sets line pressure to a desired pressure indicated by the current. A circuit (56) senses the line pressure and the current, receives compensation, and outputs a compensated difference between line and desired pressures. A first driver circuit (64) provides actuator drive based on the compensated output. The actuator (68) controls the line pressure, but presents a temperature sensitive, reactive load to the actuator drive. A simulated load (76) simulates a resistive part of the actuator load. A second driver (78) provides simulated drive to the simulated load. The second driver (78) generates the compensation which simulates actuator drive parameters, but is isolated from reactive effects and temperature sensitivity of the actuator (68).

公开(公告)号：EP0490898A1

公开(公告)日：1992-06-24

申请号：EP90908082.0

申请日：1990-04-20

Applicant: ROSEMOUNT INC.

Inventor： ROVNER, Bruce, D.

IPC: G05B13 ,  G05B17 ,  G05D16

CPC classification number: G05D16/2013 ,  Y10T137/7761

Abstract: Un convertisseur (50) courant/pression établit une pression voulue, indiquée par le courant, dans un conduit. Un circuit (56) détecte la pression dans le conduit et le courant, reçoit une compensation et produit une différence compensée entre la pression voulue et la pression dans la ligne. Un premier circuit d'entraînement (64) assure l'entraînement de l'organe d'actionnement sur la base de la sortie compensée. L'organe d'actionnement (68) règle la pression dans le conduit mais renvoie une charge thermosensible de réaction au circuit d'entraînement de l'organe d'actionnement. Une charge simulée (76) simule une partie de résistance de la charge de l'organe d'actionnement. Un deuxième circuit d'entraînement (78) assure un entraînement simulé de la charge simulée. Le deuxième circuit d'entraînement (78) génère une composition qui simule des paramètres d'entraînement de l'organe d'actionnement mais est isolé par rapport aux effects de réaction et à la sensibilité thermique de l'organe d'actionnement (68).