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    PROCESS DEVICE WITH SUPERVISORY OVERLAYER
    1.
    发明专利
    PROCESS DEVICE WITH SUPERVISORY OVERLAYER 未知

    公开(公告)号：CA2545129C

    公开(公告)日：2015-03-17

    申请号：CA2545129

    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

    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.

    PROCESS CONTROL LOOP CURRENT VERIFICATION
    3.
    发明专利
    PROCESS CONTROL LOOP CURRENT VERIFICATION 未知

    公开(公告)号：CA2599369A1

    公开(公告)日：2006-10-05

    申请号：CA2599369

    申请日：2006-03-16

    Applicant: ROSEMOUNT INC

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

    IPC: G08C19/02 ,  G01R19/25

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

    BARRIER DEVICE
    4.
    发明专利
    BARRIER DEVICE 未知

    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).

    DEDICATED PROCESS DIAGNOSTIC DEVICE
    5.
    发明申请
    DEDICATED PROCESS DIAGNOSTIC DEVICE 审中-公开
    专用过程诊断装置

    公开(公告)号：WO2007139843A3

    公开(公告)日：2008-02-14

    申请号：PCT/US2007012317

    申请日：2007-05-23

    Applicant: ROSEMOUNT INC ,  LONGSDORF RANDY J ,  NELSON SCOTT D ,  DAVIS DALE S ,  NELSON RICHARD L ,  JOHNSON AMY K ,  BROWN GREGORY C

    Inventor： LONGSDORF RANDY J ,  NELSON SCOTT D ,  DAVIS DALE S ,  NELSON RICHARD L ,  JOHNSON AMY K ,  BROWN GREGORY C

    IPC: G08C19/02 ,  G08B23/00

    CPC classification number: G01F1/50 ,  G01F15/00 ,  G05B19/0428 ,  G05B2219/24033 ,  G08C19/02

    Abstract: A field mountable dedicated process diagnostic device (100) is used for diagnosing operation of an industrial control or monitoring system. An input (102) is configured to receive at least one process signal (112A-N) related to operation of the industrial process. A memory (44) contains diagnostic program instructions configured to implement a diagnostic algorithm using the process signal. The diagnostic algorithm is specific to the industrial process. A microcontroller (42) performs the diagnostic program instructions and responsively diagnoses operation of the process based upon the process signal.

    Abstract translation: 现场可安装的专用工艺诊断装置（100）用于诊断工业控制或监视系统的操作。 输入（102）被配置为接收与工业过程的操作有关的至少一个过程信号（112A-N）。 存储器（44）包含被配置为使用过程信号实现诊断算法的诊断程序指令。 诊断算法特定于工业过程。 微控制器（42）执行诊断程序指令，并且基于过程信号响应地诊断过程的操作。

    6.
    发明专利
    未知

    公开(公告)号：BRPI0515937A

    公开(公告)日：2008-08-12

    申请号：BRPI0515937

    申请日：2005-09-20

    Applicant: ROSEMOUNT INC

    Inventor： LONGSDORF RANDY J ,  DAVIS DALE S

    IPC: G05B23/02

    Abstract: A process device for coupling to a two-wire process control loop—includes diagnostic circuitry 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 is configured to provide an analog output on the loop related to an output from the diagnostic circuitry.

    APPARATUS FOR COMMUNICATING BETWEEN SYSTEMS HAVING DIFFERENT COMMUNICATIONS STANDARDS
    7.
    发明专利
    APPARATUS FOR COMMUNICATING BETWEEN SYSTEMS HAVING DIFFERENT COMMUNICATIONS STANDARDS 未知

    公开(公告)号：CA2047459A1

    公开(公告)日：1992-01-21

    申请号：CA2047459

    申请日：1991-07-19

    Applicant: ROSEMOUNT INC

    Inventor： LONGSDORF RANDY J ,  PEDERSON DAVID L

    IPC: G05B19/418 ,  H04L5/14

    Abstract: The communicator made according to the present invention receives queries from a process controller and directs them to their intended destination after formatting them appropriately. The received query contains a process variable (PV) address section. A storage section stores the PV address, which is representative of a storage location for a process variable in a field device (FD). The FD is in a network of FDs where each FD has an FD type and a unique FD address. In an associating section, each of a plurality of FD addresses and the FD type corresponding to such FD address are associated with one PV address corresponding thereto and an output is provided which is representative of a corresponding address pair. An extracting section receives the stored PV address from the storing means and accesses the associating means, searching through the address pairs and extracting an output containing the FD address and the FD type corresponding to a PV address which matches the stored PV address. Finally, a generating section receives the extracted FD address and FD type and generates a FD request as a function of the PD type and containing the extracted FD address. The FD request is conveyed over a line common to the FDs, to the FD containing the stored PV address location. The storage section includes an IEEE serial interface for coupling to the process controller. In a preferred embodiment, the IEEE serial interface can be RS232, RS-422 or RS-485. In another embodiment, the storage section includes two IEEE serial interfaces, either couplable to the process controller. The storage section 7074A also has a bidirectional echoing section coupled between the IEEE serial interfaces for echoing a query received on one interface to the other interface. 7074A

    TWO-WIRE TRANSMITTER WITH THRESHOLD DETECTION CIRCUIT
    8.
    发明专利
    TWO-WIRE TRANSMITTER WITH THRESHOLD DETECTION CIRCUIT 未知

    公开(公告)号：CA1280486C

    公开(公告)日：1991-02-19

    申请号：CA579612

    申请日：1988-10-07

    Applicant: ROSEMOUNT INC

    Inventor： LONGSDORF RANDY J

    IPC: G08C19/02 ,  G08C19/10 ,  G08C19/00

    Abstract: TWO-WIRE TRANSMITTER WITH THRESHOLD DETECTION CIRCUIT A threshold detection circuit for improving the output of a two-wire transmitter is disclosed. The transmitter comprises a sensing means which has a sensor responsive to a parameter to be sensed by the transmitter and an excitation means which provides an excitation output to excite the sensor . A threshold detection circuit is coupled to the sensor output and provides a detector output representative of an undesired change in excitation output which can produce a sensor output which is not substantially representative of the sensed parameter An output means is coupled to the sensor output and detector output and provides the transmitter output as a function of the sensor output and detector output. A distinctive transmitter output representative of an undesired change in excitation output thus detected is provided, thereby improving the transmitter output.

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