公开(公告)号：CA2726601A1

公开(公告)日：2009-12-23

申请号：CA2726601

申请日：2009-06-17

Applicant: ROSEMOUNT INC

Inventor： KIELB JOHN A

IPC: G05B15/02 ,  G05B23/02

Abstract: A wireless adapter for use in a two- wire process control loop (22) includes wireless communication circuitry and first and second terminals configured to couple in series with the two-wire process control loop (22). A regulator (152) having a regulated input is coupled to the first terminal and an output. A shunt (154) is coupled to the output of the regulator (152) and is configured to provide power to the wireless communication circuitry. A feedback circuit (158) is configured to control current flowing from the regulator (152) to the shunt (154) as a function of a loop current flowing through the two- wire process control loop (22).

公开(公告)号：WO9610730A3

公开(公告)日：1996-05-30

申请号：PCT/US9511532

申请日：1995-09-11

Applicant: ROSEMOUNT INC

Inventor： MCCOY STEVEN J ,  SCHUMACHER MARK S ,  KIELB JOHN A ,  PALAN DONALD F ,  EDWARDS GRANT B ,  LONGSDORF RANDY J ,  TEMPLIN JAMES E

IPC: G01D3/08 ,  G01F23/284 ,  H02H9/00

CPC classification number: H02H9/008 ,  G01D3/08 ,  G01F23/284

Abstract: A barrier device (2) threadably mounts to a cabling aperture (24) on a field mounted transmitter (6). The field mounted transmitter (6) receives and transmits signals, and is wholly powered by a current loop circuit (14). The barrier device (2) has a conductive housing with at least a first (72) and a second (74) aperture and a pair of conductors (14) passing through the first aperture (72) of the barrier device (2), for connecting to a terminal block (4) in the transmitter (6). A pair of signal terminals (16, 18) are mounted in the second aperture (74) of the barrier device (6). The signal terminals (16, 18) are connectable to a handheld communicator, which is used to calibrate, monitor and test the transmitter (6). A barrier circuit (22) is mounted in the housing and is electrically connected between the signal terminals (16, 18) and the conductors (14).

公开(公告)号：WO2009154748A2

公开(公告)日：2009-12-23

申请号：PCT/US2009003616

申请日：2009-06-17

Applicant: ROSEMOUNT INC ,  KIELB JOHN A ,  WESTFIELD BRIAN L ,  ORTH KELLY M

Inventor： KIELB JOHN A ,  WESTFIELD BRIAN L ,  ORTH KELLY M

IPC: H04B1/04

CPC classification number: G05B19/4185 ,  G01D21/00 ,  G05B2219/31121 ,  G05B2219/33192 ,  G05B2219/34313 ,  G08C17/02 ,  Y02P80/114 ,  Y02P90/18 ,  Y02P90/86

Abstract: An adapter (300) for coupling to a process control transmitter (308) of the type used to monitor a process variable in an industrial process includes a first connection configured to couple to a first side of a two wire process control loop (302), a second connection configured to couple to a second side of the two wire process control loop (302) and in series with a first connection to a process control transmitter (308), and a third connection configured to couple to a second connection of the process control transmitter (308). Wireless communication circuitry is coupled to at least the third connection and is configured to provide wireless communication for the process control transmitter (308). Intrinsic safety circuitry (460) coupled to at least one of the first, second and third connections is configured to limit transfer of electrical energy to a value which is less than an intrinsic safety value.

Abstract translation: 用于耦合到用于监测工业过程中的过程变量的类型的过程控制发送器（308）的适配器（300）包括被配置为耦合到双线过程控制回路（302）的第一侧的第一连接， 第二连接，其被配置为耦合到所述两线制过程控制回路（302）的第二侧并且与到过程控制发送器（308）的第一连接串联，以及被配置为耦合到所述过程的第二连接的第三连接 控制发射机（308）。 无线通信电路耦合到至少第三连接，并且被配置为为过程控制发送器（308）提供无线通信。 耦合到第一，第二和第三连接中的至少一个的本质安全电路（460）被配置为将电能的传递限制为小于本征安全值的值。

公开(公告)号：BR9608434A

公开(公告)日：1999-03-02

申请号：BR9608434

申请日：1996-05-31

Applicant: ROSEMOUNT INC

Inventor： MANICOR SCOTT D ,  KIELB JOHN A ,  NELSON RICHARD L

IPC: G01F23/284 ,  G01S13/10

Abstract: A level transmitter for use in a process application measures height of a product in a tank. The level transmitter includes a microwave antenna directed into the tank. A low power microwave source sends a microwave signal through the microwave antenna. A low power microwave receiver receives a reflected microwave signal. Measurement circuitry coupled to the source and receiver initiates transmitting of the microwave signal and determines product height based upon the received, reflected signal. Output circuitry coupled to a two-wire process control loop transmits information related to product height over the loop. Power supply circuitry in the level transmitter coupled to the two-wire process control loop receives power from the loop which powers the level transmitter including the microwave source and the microwave receiver.

公开(公告)号：MX9709323A

公开(公告)日：1998-02-28

申请号：MX9709323

申请日：1996-05-31

Applicant: ROSEMOUNT INC

Inventor： KIELB JOHN A ,  NELSON RICHARD L ,  MANICOR SCOTT D

IPC: G01F23/284 ,  G01S13/10

Abstract: Un transmisor de nivel (10) para utilizarse en una aplicacion de proceso mide la altura de un producto (14) en un tanque (12). El transmisor de nivel (10) incluye una antena microonda (18) dirigida al tanque (10). Una fuente de microonda de baja energía (70) envía una señal de microonda a través de la antena de microonda (18). Un receptor de microonda de baja energía (70) recibe una seña de microonda reflejada. El conjunto de circuito de medicion (42) que se acopla a la fuente y al receptor, inicia la transmision de la señal de microonda y determina la altura del producto basado en la señal reflejada y recibida. El conjunto de circuitos de salida (48,56) acoplado a un circuito de control de proceso de dos alambres (20) transmite informacion relacionada a la altura del producto hacia el circuito (20) el cual da energía al transmisor de nivel (10) incluyendo la fuente de microonda y el receptor de microonda (70).

公开(公告)号：AT109295T

公开(公告)日：1994-08-15

申请号：AT87906717

申请日：1987-09-24

Applicant: ROSEMOUNT INC

Inventor： KIELB JOHN A ,  NELSON RICHARD L ,  PEDERSON DAVID L

IPC: G08C19/02 ,  G08C19/04 ,  H04M11/04

Abstract: An existing analog two-wire transmitter (11) has a sensor module (35), and analog circuits (23) which provide an output representative of a sensed process variable, such as pressure, to a two-wire current loop (14). At least portions of the analog circuit (23) are removed and replaced with apparatus including a digital converter (52) that digitally calculates the transmitter output using the same current range in the current loop (14) and calculating corrections for obtaining linearity of the output.

公开(公告)号：DK297588A

公开(公告)日：1988-06-01

申请号：DK297588

申请日：1988-06-01

Applicant: ROSEMOUNT INC

Inventor： KIELB JOHN A ,  NELSON RICHARD L ,  PEDERSON DAVID L

IPC: G08C19/02 ,  G08C19/00

Abstract: An existing analogue two-wire transmitter 11 has a sensor module 35, and analogue circuits 23 which provide an output signal representative of a sensed process variable, such as, for example, pressure, to a two-wire current loop 14. At least a part of the analogue circuit 23 is removed and replaced with apparatus including a digital converter 52 that digitally calculates the transmitter output signal using the same current range in the current loop 14 and calculating corrections for obtaining linearity of the output signal.

公开(公告)号：CA2726534A1

公开(公告)日：2009-12-23

申请号：CA2726534

申请日：2009-06-17

Applicant: ROSEMOUNT INC

Inventor： KIELB JOHN A ,  WESTFIELD BRIAN L

IPC: H04L12/40 ,  G05B19/418

Abstract: A wireless adapter for use with a two-wire process control loop (22) is configured to couple to a process field device (12) in an industrial process control system. The wireless adapter (30) is coupled to the two-wire process control loop (22) and provides wireless communication to the process field device (12). The adapter (30) includes first and second loop terminals configured to couple in series with the two-wire process control loop (22). Wireless communication circuitry (155) is coupled to the first and second loop terminals and is adapted to provide wireless communication to the process field device (12). Loop current bypass circuitry (164) is electrically connected between the first and second loop terminals and is configured to provide a loop current path therebetween in response to an open circuit in wireless communication circuitry (155).

公开(公告)号：CA2196749A1

公开(公告)日：1996-04-11

申请号：CA2196749

申请日：1995-09-11

Applicant: ROSEMOUNT INC

Inventor： MCCOY STEVEN J ,  SCHUMACHER MARK S ,  KIELB JOHN A ,  PALAN DONALD F ,  EDWARDS GRANT B ,  LONGSDORF RANDY J ,  TEMPLIN JAMES E

IPC: G01D3/08 ,  G01F23/284 ,  H02H9/00 ,  G01D11/24 ,  G08C19/00 ,  G08C19/16

Abstract: A barrier device (2) threadably mounts to a cabling aperture (24) on a field mounted transmitter (6). The field mounted transmitter (6) receives and transmits signals, and is wholly powered by a current loop circuit (14). The barrier device (2) has a conductive housing with at least a first (72) and a second (74) aperture and a pair of conductors (14) passing through the first aperture (72) of the barrier device (2), for connecting to a terminal block (4) in the transmitter (6). A pair of signal terminals (16, 18) are mounted in the second aperture (74) of the barrier device (6). The signal terminals (16, 18) are connectable to a handheld communicator, which is used to calibrate, monitor and test the transmitter (6). A barrier circuit (22) is mounted in the housing and is electrically connected between the signal terminals (16, 18) and the conductors (14).

公开(公告)号：CA1334994C

公开(公告)日：1995-03-28

申请号：CA548261

申请日：1987-09-30

Applicant: ROSEMOUNT INC

Inventor： KIELB JOHN A ,  NELSON RICHARD L ,  PEDERSON DAVID L

IPC: G08C19/02 ,  G08C19/04

Abstract: An existing analog two-wire transmitter has a sensor module, an analog excitation circuit, and an analog detector circuit which provides an output representative of a sensed process variable, such a pressure, to a two-wire current loop. The analog detection circuit is removed and replaced with apparatus including a digital converter that digitally calculates the transmitter's output. The output is improved by calculating correction for linearity. The analog excitation circuit may also be replaced with a replacement excitation circuit. The replacement excitation circuit and the digital converter can be energized in series to control energization current. A charge pump can be coupled to the loop to balance the current in the series circuit. The digital converter can also provide electrical span and zero adjustments.