CA982654A - Two wire current transmitter with isolated transducer circuit - Google Patents

Two wire current transmitter with isolated transducer circuit

Info

Publication number
CA982654A
CA982654A CA168,401A CA168401A CA982654A CA 982654 A CA982654 A CA 982654A CA 168401 A CA168401 A CA 168401A CA 982654 A CA982654 A CA 982654A
Authority
CA
Canada
Prior art keywords
wire current
current transmitter
transducer circuit
isolated transducer
isolated
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
CA168,401A
Other languages
English (en)
Other versions
CA168401S (fr
Inventor
Robert C. Rose
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rosemount Inc
Original Assignee
Rosemount Inc
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 filed Critical Rosemount Inc
Application granted granted Critical
Publication of CA982654A publication Critical patent/CA982654A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/02—Means for indicating or recording specially adapted for thermometers
    • G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
    • G01K7/021—Particular circuit arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Amplifiers (AREA)
CA168,401A 1972-05-08 1973-04-10 Two wire current transmitter with isolated transducer circuit Expired CA982654A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25088272A 1972-05-08 1972-05-08

Publications (1)

Publication Number Publication Date
CA982654A true CA982654A (en) 1976-01-27

Family

ID=22949540

Family Applications (1)

Application Number Title Priority Date Filing Date
CA168,401A Expired CA982654A (en) 1972-05-08 1973-04-10 Two wire current transmitter with isolated transducer circuit

Country Status (7)

Country Link
US (1) US3764880A (hu)
JP (1) JPS6013237B2 (hu)
BR (1) BR7303294D0 (hu)
CA (1) CA982654A (hu)
DE (1) DE2321900B2 (hu)
FR (1) FR2183860B1 (hu)
GB (1) GB1423263A (hu)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2208520A5 (hu) * 1972-11-29 1974-06-21 Charbonnages De France
US4205327A (en) * 1978-03-13 1980-05-27 Rosemount Inc. Two wire current transmitter with adjustable current control linearization
US4206397A (en) * 1978-03-13 1980-06-03 Rosemount Inc. Two wire current transmitter with improved voltage regulator
DE2847206B2 (de) * 1978-10-30 1981-06-25 Hartmann & Braun Ag, 6000 Frankfurt Schaltungsanordnung zur galvanischen Trennung von analogen Gleichstromsignalen
US4331912A (en) * 1980-10-06 1982-05-25 Rosemount Inc. Circuit for converting a non-live zero current signal to a live zero DC output signal
US4748852A (en) * 1986-10-10 1988-06-07 Rosemount Inc. Transmitter with an improved span adjustment
JPH07113584B2 (ja) * 1986-12-26 1995-12-06 三井東圧化学株式会社 ２線式温度変換器
EP0518916B1 (en) * 1990-02-21 1997-07-30 Rosemount Inc. Multifunction isolation transformer
DE4121961A1 (de) * 1991-06-28 1993-01-07 Siemens Ag Schaltungsanordnung zur energieversorgung von feldgeraeten
CA2116113C (en) * 1991-09-07 2002-11-26 Eric John Atherton Apparatus for transmitting instrumentation signals over power conductors
US5302889A (en) * 1992-06-19 1994-04-12 Honeywell Inc. Voltage regulator
GB2269568A (en) * 1992-08-10 1994-02-16 Lansing Linde Ltd Electrically powered device, eg vehicle with on-demand power steering.
DE4307916C1 (de) * 1993-03-12 1994-09-29 Heraeus Sensor Gmbh Temperaturüberwachungsvorrichtung mit Energieversorgung durch Thermoelement
DE4310910C2 (de) * 1993-04-02 1995-06-14 Siemens Ag Zweidraht-Ein-Aus-Schalter
EP0817149B1 (de) * 1996-06-28 1999-05-12 Endress + Hauser Wetzer GmbH + Co. KG Schaltung zur Übertragung eines Messstroms von einem eigensicheren Sensor in einen nicht-eigensicheren Bereich
DE19640829A1 (de) * 1996-10-02 1998-03-12 Siemens Ag Schaltungsanordnung
GB2332527B (en) * 1997-12-19 2002-10-30 Abb Kent Taylor Ltd Electromagnetic flowmeter
DE59710058D1 (de) * 1997-12-30 2003-06-12 Endress & Hauser Gmbh & Co Kg Messumformer-Speisegerät
DE19949623C1 (de) * 1999-10-14 2001-05-10 Asm Automation Sensorik Messte Störfester Meßumformer für Potentiometer und Verfahren zur Erhöhung der Störfestigkeit
ES2367988T3 (es) * 2003-04-30 2011-11-11 White Box Inc. Módulo conector para termopares.
US7844410B2 (en) * 2006-07-03 2010-11-30 Endress + Hauser Flowtec Ag Field device electronics fed by an external electrical energy supply
DE102006030962A1 (de) * 2006-07-03 2008-01-31 Endress + Hauser Flowtec Ag Von einer externen elektrischen Energieversorgung gespeiste Feldgerät-Elektronik
DE102006051900A1 (de) 2006-10-31 2008-05-08 Endress + Hauser Gmbh + Co. Kg Vorrichtung zur Bestimmung und/oder Überwachung mindestens einer Prozessgröße
DE102006055396A1 (de) * 2006-11-22 2008-05-29 Endress + Hauser Gmbh + Co. Kg Signaltrenneinheit für eine Zwei-Leiter-Prozessregelschleife
DE102007060555A1 (de) 2007-12-13 2009-06-18 Endress + Hauser Wetzer Gmbh + Co Kg Vorrichtung zur Übertragung von elektrischer Energie und Information
EP2561603B1 (de) 2010-04-19 2019-09-04 Endress+Hauser Flowtec AG Treiberschaltung für einen messwandler sowie damit gebildetes messsystem
DE202010006553U1 (de) 2010-05-06 2011-10-05 Endress + Hauser Flowtec Ag Elektronisches Meßgerät mit einem Optokoppler
DE102016114860A1 (de) 2016-08-10 2018-02-15 Endress + Hauser Flowtec Ag Treiberschaltung sowie damit gebildete Umformer-Elektronik bzw. damit gebildetes Meßsystem
CN109283871B (zh) * 2018-09-28 2023-12-08 承德万达高新仪表有限公司 一种带有干接点输出报警功能的二线制智能型变送器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3517556A (en) * 1967-05-02 1970-06-30 Monsanto Co Resistive-type temperature-to-current transducer
US3503261A (en) * 1967-11-01 1970-03-31 Fischer & Porter Co Resistance to current converter
US3538355A (en) * 1968-05-27 1970-11-03 Rosemount Eng Co Ltd Current transmitter responsive to a d.c. isolated voltage signal
US3581184A (en) * 1969-05-19 1971-05-25 Honeywell Inc Isolator for dc signal transmitter
US3573599A (en) * 1969-10-27 1971-04-06 Rosemount Eng Co Ltd Two-wire current transmitter with transformer isolation
US3624455A (en) * 1970-08-28 1971-11-30 Melvin W Hillman Signal-comparing system, particularly for temperature-sensing
JPS4632396Y1 (hu) * 1971-04-13 1971-11-09

Also Published As

Publication number Publication date
GB1423263A (en) 1976-02-04
FR2183860B1 (hu) 1977-02-11
JPS6013237B2 (ja) 1985-04-05
BR7303294D0 (pt) 1974-07-11
US3764880A (en) 1973-10-09
JPS4929157A (hu) 1974-03-15
DE2321900A1 (de) 1973-11-22
FR2183860A1 (hu) 1973-12-21
DE2321900B2 (de) 1977-02-17

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