公开(公告)号：AU7562394A

公开(公告)日：1995-03-27

申请号：AU7562394

申请日：1994-08-12

Applicant: ROSEMOUNT INC

Inventor： BRODEN DAVID A ,  ORTH KELLY M ,  BORGESON DALE W ,  LANCTOT JANE B ,  VOEGELE KEVIN D

IPC: G08C19/02

Abstract: In this invention, a multivariable transmitter providing an output representative of mass flow has a dual microprocessor structure. The first microprocessor compensates digitized process variables and the second microprocessor computes the mass flow as well as arbitrating communications between the transmitter and a master. In a second embodiment of the present invention, a first microprocessor compensates digitized process variables, a second microprocessor computes an installation specific physical parameter such as mass flow and a third microprocessor arbitrates real-time communications between the transmitter and a master.

公开(公告)号：CA1330833C

公开(公告)日：1994-07-19

申请号：CA580909

申请日：1988-10-21

Applicant: ROSEMOUNT INC

Inventor： ORTH KELLY M ,  LEE DAVID W ,  FRICK ROGER L

IPC: G05B15/02 ,  H01H9/04 ,  H01H36/00 ,  G08B1/08

Abstract: A transmitter for use in a process control system has externally accessible actuators for permitting external adjustment of the zero and span (or full scale) settings of the transmitter . the transmitter has an explosion-proof housing which includes an interior chamber in which transmitter circuitry is located. Each of the actuators includes a movable magnet which operates a magnetic reed switch located within the interior chamber of the housing through a wall of the housing . Each of the magnets is mounted on a movable actuator which extends into a blind hole in a wall of the housing . By moving the magnet within its hole , the corresponding reed switch can be changed from a non-actuated to an actuated state. When the zero reed switch is actuated, the transmitter circuitry adjusts its output so that the present value of the parameter represents a process zero. When the span (or full scale) reed switch is actuated, the transmitter circuitry adjusts its output so that the present value of the sensed parameter represents a process maximum.

公开(公告)号：CA1319267C

公开(公告)日：1993-06-22

申请号：CA580911

申请日：1988-10-21

Applicant: ROSEMOUNT INC

Inventor： ORTH KELLY M ,  QUIST STEVEN M ,  FRICK ROGER L ,  PASCHKE RANDY K

IPC: G08C15/06 ,  G01D3/02 ,  G01L9/12 ,  G01L19/06 ,  G01L19/08 ,  G01L27/00 ,  G08C19/02 ,  G08C19/16 ,  H03M1/00

Abstract: An industrial process control transmitter has a modular construction, with a detector module and an output module electrically connected together by a serial bus . The output module includes a microcomputer , a modem for digital communication over the two-wire loop, analog output circuitry for controlling loop current, a digital-to-analog converter , and a memory for storing calibration factors and D/A characterization factors. The detector module includes several sensors with associated circuitry to convert the sensor signals to digital signals. The detector module also includes a memory which contains characterization factors unique to the sensors which can be used by the microcomputer to correct the digital values provided by the detector circuitry the microcomputer of the output module is considered the master unit, and all of the circuits of the detector board which interface with the serial bus are considered slave units. Data is collected by the microcompuer when a selected detector circuit provides an interrupt over the serial bus . The microcomputer then provides a select signal requesting data. The detector module provides data from the sensor circuits in a selected order in response to the select signal.

公开(公告)号：AU6649790A

公开(公告)日：1991-04-28

申请号：AU6649790

申请日：1990-10-01

Applicant: ROSEMOUNT INC

Inventor： WARRIOR JOGESH ,  JACOBSON VINCENT C ,  ORTH KELLY M ,  TIELENS CRAIG R

IPC: G08C19/02 ,  G05B15/02 ,  G05B19/418 ,  H04B3/50 ,  H04Q9/02 ,  G05B15/00

Abstract: A smart field-mounted control unit, for controlling a process, receives signals and sends a command output over a two-wire circuit which powers the control unit. An input section receives the signals, which can be instructions representative of commands or instruction sets, process variables sensed by external control units or setpoints representative of a desired process state. The instructions are representative of a control requirement of the process and adjust a controlling section in the control unit to generate the command output in conformance with the control requirement. The command output can be a function of the difference between the process setpoint and a process variable, or a function of a linear combination of a process variable and its calculated time integral and time derivative functions. A sensing section in the control unit can sense and scale a process variable for generating the command output as well. The control unit can include a regulator section, controlled by the command output, which regulates application of a mechanical, hydraulic, pneumatic or electromagnetic force applied to the process.

公开(公告)号：CA2838752C

公开(公告)日：2016-06-14

申请号：CA2838752

申请日：2012-06-26

Applicant: ROSEMOUNT INC

Inventor： ORTH KELLY M

IPC: G01D21/00 ,  G05B19/042

Abstract: A wireless field device (102) for use in controlling or monitoring an industrial process (100), includes a process interface (110) configured to couple to a process fluid. Field device circuitry is coupled to the process interface (110) and configured to measure or control a process variable. Wireless communication circuitry (154) is configured to provide wireless communication. At least one electrical access terminal is configured to provide an electrical connection to circuitry of the field device. A power supply (160) is configured to power the wireless field device. The power supply (160) includes a removable primary power source (162) to provide power to the field device (102) for extended periods of time. A secondary power source (164) is configured to provide power to the field device (102) when the primary power source (162) is removed.

公开(公告)号：CA2579818C

公开(公告)日：2012-03-20

申请号：CA2579818

申请日：2005-09-15

Applicant: ROSEMOUNT INC

Inventor： ORTH KELLY M ,  MCGUIRE CHAD M

IPC: H05K1/02

Abstract: A field hardened industrial device (200) is described with a housing (208) of the device having electrically conductive walls surrounding a cavity (206) with an open end. An electronics assembly (292) is adapted to fit within the cavity. The device includes a circuit card assembly (270), which is a multi-layered printed wiring board with pass-through electrical connections and an embedded ground plane (350) electrically coupled to the housing (202) to shield the electronics assembly (292) from electromagnetic interference and to provide environmental protection to the electronics assembly.

公开(公告)号：BRPI0512605A

公开(公告)日：2008-03-25

申请号：BRPI0512605

申请日：2005-06-21

Applicant: ROSEMOUNT INC

Inventor： KARSCHNIA ROBERT J ,  WILLCOX CHARLES R ,  BRODEN DAVID A ,  WESTFIELD BRIAN L ,  ORTH KELLY M

IPC: G05B19/418 ,  G06F13/14

Abstract: A field device for use in an industrial process control or monitoring system connects to a two-wire process control loop. The loop carries data and provides power to the field device. RF circuitry in the field device is provided for radio frequency communication. A power supply powers the RF circuitry using power received from the two-wire process control loop.

公开(公告)号：CA2568986A1

公开(公告)日：2006-03-09

申请号：CA2568986

申请日：2005-06-21

Applicant: ROSEMOUNT INC

Inventor： ORTH KELLY M ,  WESTFIELD BRIAN L ,  BRODEN DAVID A ,  WILLCOX CHARLES R ,  KARSCHNIA ROBERT J

IPC: G05B19/418 ,  G06F13/14

Abstract: A field device for use in an industrial process control or monitoring system connects to a two-wire process control loop. The loop carries data and provides power to the field device. RF circuitry in the field device is provided for radio frequency communication. A power supply powers the RF circuitry using power received from the two-wire process control loop.

公开(公告)号：AU2005280612A1

公开(公告)日：2006-03-09

申请号：AU2005280612

申请日：2005-06-21

Applicant: ROSEMOUNT INC

Inventor： KARSCHNIA ROBERT J ,  BRODEN DAVID A ,  ORTH KELLY M ,  WILLCOX CHARLES R ,  WESTFIELD BRIAN L

IPC: G05B19/418 ,  G06F13/14

Abstract: A field device for use in an industrial process control or monitoring system connects to a two-wire process control loop. The loop carries data and provides power to the field device. RF circuitry in the field device is provided for radio frequency communication. A power supply powers the RF circuitry using power received from the two-wire process control loop.

公开(公告)号：AU7720200A

公开(公告)日：2001-04-30

申请号：AU7720200

申请日：2000-09-26

Applicant: ROSEMOUNT INC

Inventor： BEHM STEVEN M ,  KRUEGER WILLIAM B ,  ORTH KELLY M ,  BREKKEN JEFFREY C

IPC: G01L19/04 ,  G01D1/00 ,  G01L9/00 ,  H01R29/00

Abstract: A pressure transmitter with a transmitter housing having an outer wall providing thermal resistance. The outer wall extends from an isothermal island at a first end to a heat sink island at a second end. The isothermal island includes a fluid inlet, and pressure and temperature sensors. The heat sink island includes a primary heat load device that is heat sunk to an outer shell of an electrical connector. The connector contacts carry a current controlled by the transmitter, and a portion of the current is conducted by a primary heat load device. A circuit board controls the current to represent the pressure. A high accuracy, temperature compensated current output represents pressure.