WO2005104056A3 - Two wire transmitter with isolated can output - Google Patents

Two wire transmitter with isolated can output Download PDF

Info

Publication number
WO2005104056A3
WO2005104056A3 PCT/US2005/007328 US2005007328W WO2005104056A3 WO 2005104056 A3 WO2005104056 A3 WO 2005104056A3 US 2005007328 W US2005007328 W US 2005007328W WO 2005104056 A3 WO2005104056 A3 WO 2005104056A3
Authority
WO
WIPO (PCT)
Prior art keywords
circuit
isolated
area network
controller area
transmitter
Prior art date
Application number
PCT/US2005/007328
Other languages
French (fr)
Other versions
WO2005104056A2 (en
Inventor
Brian Lee Westfield
Kelly M Orth
Original Assignee
Rosemount Inc
Brian Lee Westfield
Kelly M Orth
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rosemount Inc, Brian Lee Westfield, Kelly M Orth filed Critical Rosemount Inc
Priority to EP05724798A priority Critical patent/EP1733365A2/en
Priority to JP2007506193A priority patent/JP4926041B2/en
Publication of WO2005104056A2 publication Critical patent/WO2005104056A2/en
Publication of WO2005104056A3 publication Critical patent/WO2005104056A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/24—Housings ; Casings for instruments
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/24—Housings ; Casings for instruments
    • G01D11/245—Housings for sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
    • G01D3/08—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups with provision for safeguarding the apparatus, e.g. against abnormal operation, against breakdown

Abstract

A process variable transmitter (100) that preferably includes a transmitter output circuit (400, 300) that provides bidirectional HART and controller area network communication transceiver lines (LOOP+, LOOP-, CAN, GND). The transmitter output circuit also includes sensor circuit interface contacts (202) . An isolated circuit (201) couples to the sensor circuit interface contacts. The isolated circuit includes sensor circuitry sensing a process variable. The isolated circuit further comprises a galvanic isolation barrier (204) galvanically isolating the sensor circuitry from the HART and controller area network transceiver lines. A stacked power supply (Figs. 9A-9B) provides power management. Other aspects may include a controller area network current limiter diagnostic output (934), timed sequencing of microcontroller startup and shutdown, a local operator interface and power management.
PCT/US2005/007328 2004-03-29 2005-03-07 Two wire transmitter with isolated can output WO2005104056A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP05724798A EP1733365A2 (en) 2004-03-29 2005-03-07 Two wire transmitter with isolated can output
JP2007506193A JP4926041B2 (en) 2004-03-29 2005-03-07 2-wire transmitter with isolated CAN output

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/812,192 US7773715B2 (en) 2002-09-06 2004-03-29 Two wire transmitter with isolated can output
US10/812,192 2004-03-29

Publications (2)

Publication Number Publication Date
WO2005104056A2 WO2005104056A2 (en) 2005-11-03
WO2005104056A3 true WO2005104056A3 (en) 2006-03-16

Family

ID=34980183

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/007328 WO2005104056A2 (en) 2004-03-29 2005-03-07 Two wire transmitter with isolated can output

Country Status (6)

Country Link
US (2) US7773715B2 (en)
EP (1) EP1733365A2 (en)
JP (1) JP4926041B2 (en)
CN (2) CN1938734A (en)
RU (1) RU2338262C2 (en)
WO (1) WO2005104056A2 (en)

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WO2005104056A2 (en) 2005-11-03
JP2007531159A (en) 2007-11-01
US20040184517A1 (en) 2004-09-23
US8208581B2 (en) 2012-06-26
RU2006138032A (en) 2008-05-10
EP1733365A2 (en) 2006-12-20
CN1938734A (en) 2007-03-28
CN103471637B (en) 2016-08-10
CN103471637A (en) 2013-12-25
RU2338262C2 (en) 2008-11-10
US7773715B2 (en) 2010-08-10
JP4926041B2 (en) 2012-05-09

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