公开(公告)号：CA2113419A1

公开(公告)日：1993-03-04

申请号：CA2113419

申请日：1992-08-07

Applicant: ROSEMOUNT INC

Inventor： LONGSDORF RANDY J ,  NELSON RICHARD L

IPC: H02H9/06 ,  H02H3/22

Abstract: A protection circuit is provided for protecting sensitive electrical field instruments from a transient voltage strike and for ensuring that the instruments will meet safety approval during high potential voltage testing. The first and second wires of a two-wire circuit are connected to a first and second terminal respectively. A first surge arrestor electrically couples a first path between the first and second terminal. An impedance and a transient suppresor are connected in series and electrically couple a second path between the first and second terminal. The second path is coupled in parallel with the first path between the first and second terminal and is coupled closer to the internal components of the electrical instruments to be protected than is the first path. A second surge arrestor is electrically coupled between the second terminal and ground, and has a higher voltage breakdown potential than the first surge arrestsor.

公开(公告)号：WO2008045258B1

公开(公告)日：2008-07-24

申请号：PCT/US2007021242

申请日：2007-10-03

Applicant: ROSEMOUNT INC ,  HUISENGA GARRIE D ,  LONGSDORF RANDY J ,  LATTIMER DONALD R

Inventor： HUISENGA GARRIE D ,  LONGSDORF RANDY J ,  LATTIMER DONALD R

IPC: G05B23/02 ,  H04L1/24

CPC classification number: H04L1/24

Abstract: A diagnostic device (50) for coupling to a process control loop (18) includes digital communication circuitry (52) configured to receive a digital communication signal from the process control loop (18). The digital communication signal is a digitally modulated analog signal on the process control loop (18) which is modulated to a plurality of discrete analog signal levels representative of digital values. Diagnostic circuitry (54) diagnoses operation of the process control loop (18) which may include field devices of the process control loop based upon the digitally modulated analog signal.

公开(公告)号：WO2008045258A3

公开(公告)日：2008-05-29

申请号：PCT/US2007021242

申请日：2007-10-03

Applicant: ROSEMOUNT INC ,  HUISENGA GARRIE D ,  LONGSDORF RANDY J ,  LATTIMER DONALD R

Inventor： HUISENGA GARRIE D ,  LONGSDORF RANDY J ,  LATTIMER DONALD R

IPC: G05B23/02 ,  H04L1/24

CPC classification number: H04L1/24

Abstract: A diagnostic device (50) for coupling to a process control loop (18) includes digital communication circuitry (52) configured to receive a digital communication signal from the process control loop (18). The digital communication signal is a digitally modulated analog signal on the process control loop (18) which is modulated to a plurality of discrete analog signal levels representative of digital values. Diagnostic circuitry (54) diagnoses operation of the process control loop (18) which may include field devices of the process control loop based upon the digitally modulated analog signal.

Abstract translation: 用于耦合到过程控制回路（18）的诊断设备（50）包括被配置为从过程控制回路（18）接收数字通信信号的数字通信电路（52）。 数字通信信号是过程控制回路（18）上的数字调制模拟信号，其被调制为代表数字值的多个离散模拟信号电平。 诊断电路（54）基于数字调制的模拟信号来诊断过程控制回路（18）的操作，过程控制回路（18）可以包括过程控制回路的现场设备。

公开(公告)号：WO2006104712A3

公开(公告)日：2007-03-01

申请号：PCT/US2006009604

申请日：2006-03-16

Applicant: ROSEMOUNT INC ,  LONGSDORF RANDY J ,  HUISENGA GARRIE D ,  JOHNSON JAMES A

Inventor： LONGSDORF RANDY J ,  HUISENGA GARRIE D ,  JOHNSON JAMES A

IPC: G08C19/02 ,  G01R19/25

CPC classification number: G01R19/2509 ,  G05B19/0425 ,  G05B2219/25189 ,  G05B2219/25428 ,  G08C19/02

Abstract: A process device (12) is configured for coupling to a two wire process control loop (18) . Loop current output circuitry (60) is configured to apply an output current to the two wire process control loop (18) . Loop current verification circuitry (64) is coupled to the two wire process control loop (18) and configured to detect errors in the applied output current. At least a portion of the loop current verification circuitry (64) is independent from the loop current output circuitry (60) .

Abstract translation: 处理装置（12）被配置为耦合到双线过程控制回路（18）。 环路电流输出电路（60）被配置为向双线过程控制回路（18）施加输出电流。 环路电流验证电路（64）耦合到两线制过程控制回路（18）并被配置为检测所施加的输出电流中的误差。 环路电流验证电路（64）的至少一部分与环路电流输出电路（60）无关。

公开(公告)号：WO2005052881A3

公开(公告)日：2006-02-02

申请号：PCT/US2004037289

申请日：2004-11-08

Applicant: ROSEMOUNT INC

Inventor： LONGSDORF RANDY J ,  DAVIS DALE S ,  HEDTKE ROBERT C ,  NELSON SCOTT D

IPC: G05B19/042 ,  G05B9/02 ,  G05B23/02

CPC classification number: G05B19/0425 ,  G05B9/02 ,  G05B2219/24008 ,  G05B2219/24125 ,  G05B2219/25006 ,  G05B2219/25014 ,  G05B2219/25428

Abstract: A process device (100) is configured to meet a desired Safety Integrity Level (SIL). A device interface (310) is configured to couple to the process device and provide an output related to operation of a component of the process device. A component monitor (314) monitors operation of the component with and identifies a safety event of the component. A safety response module (318) responds to a safety event of the component in accordance with a safety response.

Abstract translation: 处理装置（100）被配置为满足期望的安全完整性水平（SIL）。 设备接口（310）被配置为耦合到过程设备并且提供与处理设备的组件的操作相关的输出。 组件监视器（314）监视组件的操作并识别组件的安全事件。 安全响应模块（318）根据安全响应响应组件的安全事件。

公开(公告)号：WO2006039170A3

公开(公告)日：2006-06-01

申请号：PCT/US2005033893

申请日：2005-09-20

Applicant: ROSEMOUNT INC ,  LONGSDORF RANDY J ,  DAVIS DALE S

Inventor： LONGSDORF RANDY J ,  DAVIS DALE S

IPC: G05B23/02

CPC classification number: G05B23/027

Abstract: A process device (12) for coupling to a two-wire process control loop (18) includes diagnostic circuitry (64) configured to identify a failure or reduced level of performance or provide a prediction of a future failure or reduced level of performance. An output coupled to the two-wire process control loop (18) is configured to provide an analog output on the loop (18) related to an output from the diagnostic circuitry (64). A method is also provided.

Abstract translation: 用于耦合到二线过程控制回路（18）的过程设备（12）包括诊断电路（64），其被配置为识别故障或降低的性能水平或者提供未来故障或降低的性能水平的预测。 耦合到二线过程控制回路（18）的输出被配置为在与诊断电路（64）的输出相关的环路（18）上提供模拟输出。 还提供了一种方法。

公开(公告)号：WO2005033639A3

公开(公告)日：2005-06-02

申请号：PCT/US2004031678

申请日：2004-09-27

Applicant: ROSEMOUNT INC

Inventor： LONGSDORF RANDY J ,  BLUMEYER CHAD C

IPC: G05B23/02

CPC classification number: G05B23/027

Abstract: An process device (12) for use in an industrial process control or monitoring system is configured to couple to a process. A vibration sensor (80) is configured to sense vibrations (70). Diagnostic circuitry (82) provides a diagnostic output based upon the sensed vibrations.

Abstract translation: 用于工业过程控制或监视系统的过程设备（12）被配置为耦合到过程。 振动传感器（80）构造成感测振动（70）。 诊断电路（82）基于感测到的振动提供诊断输出。

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：EP0598830A4

公开(公告)日：1994-03-28

申请号：EP92918335

申请日：1992-08-07

Applicant: ROSEMOUNT INC

Inventor： LONGSDORF RANDY J ,  NELSON RICHARD L

IPC: H02H9/06

CPC classification number: H02H9/06

Abstract: A protection circuit is provided for protecting sensitive electrical field instruments from a transient voltage strike and for ensuring that the instruments will meet safety approval during high potential voltage testing. The first and second wires (52, 54) of a two-wire circuit are connected to a first and second terminal respectively. A first surge arrestor electrically couples a first path between the first and second terminal. An impedance (100, 102) and a transient suppressor (90) are connected in series and electrically couple a second path between the first and second terminal. The second path is coupled in parallel with the first path between the first and second terminal and is coupled closer to the internal components of the electrical instruments to be protected than is the first path. A second surge arrestor (106) is electrically coupled between the second terminal and ground, and has a higher voltage breakdown potential than the first surge arrestor (94).

Abstract translation: 提供一个保护电路，用于保护敏感电场仪器不受瞬时电压冲击，并确保仪器在高电压电压测试期间符合安全认证。 双线电路的第一和第二导线（52,54）分别连接到第一和第二端子。 第一浪涌避雷器电联接第一和第二端子之间的第一路径。 阻抗（100,102）和瞬态抑制器（90）串联连接并电耦合第一和第二端子之间的第二路径。 第二路径与第一和第二端子之间的第一路径并联耦合，并且比第一路径更靠近要被保护的电气仪器的内部组件耦合。 第二电涌放电器（106）电耦合在第二端子和地之间，并具有比第一电涌放电器（94）更高的击穿电压。