DE2739438A1 - Umformer - Google Patents

Umformer

Info

Publication number
DE2739438A1
DE2739438A1 DE19772739438 DE2739438A DE2739438A1 DE 2739438 A1 DE2739438 A1 DE 2739438A1 DE 19772739438 DE19772739438 DE 19772739438 DE 2739438 A DE2739438 A DE 2739438A DE 2739438 A1 DE2739438 A1 DE 2739438A1
Authority
DE
Germany
Prior art keywords
current
converter
voltage
transistor
output
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.)
Withdrawn
Application number
DE19772739438
Other languages
German (de)
English (en)
Inventor
Peter J Herzl
Robert G Shaffer
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.)
Fischer and Porter Co
Original Assignee
Fischer and Porter Co
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 Fischer and Porter Co filed Critical Fischer and Porter Co
Publication of DE2739438A1 publication Critical patent/DE2739438A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/06—Indicating or recording devices
    • G01F15/068—Indicating or recording devices with electrical means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
DE19772739438 1976-10-05 1977-09-01 Umformer Withdrawn DE2739438A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/729,778 US4084155A (en) 1976-10-05 1976-10-05 Two-wire transmitter with totalizing counter

Publications (1)

Publication Number Publication Date
DE2739438A1 true DE2739438A1 (de) 1978-04-06

Family

ID=24932585

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19772739438 Withdrawn DE2739438A1 (de) 1976-10-05 1977-09-01 Umformer

Country Status (6)

Country Link
US (1) US4084155A (enExample)
JP (1) JPS596434B2 (enExample)
CA (1) CA1076229A (enExample)
DE (1) DE2739438A1 (enExample)
FR (1) FR2405597B3 (enExample)
GB (1) GB1580703A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228150A1 (de) * 1992-08-25 1994-03-03 Telefunken Microelectron Schaltungsanordnung mit einem Sensor

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4158765A (en) * 1977-11-08 1979-06-19 Fischer & Porter Co. Totalizer for two-wire transmitter
US4348673A (en) * 1978-10-13 1982-09-07 The Foxboro Company Instrumentation system with electric signal transmitter
DE2901516C2 (de) * 1979-01-16 1985-01-24 VEGA Grieshaber GmbH & Co, 7620 Wolfach Anordnung zur Erzeugung eines einer Kapazität proportionalen Signals
US4429582A (en) 1981-12-10 1984-02-07 The Babcock & Wilcox Company Vortex shedding flowmeter circuit with analog and pulse output signal
US4811193A (en) * 1983-05-04 1989-03-07 Fmc Corporation Variable frequency controller
US4809558A (en) * 1987-02-27 1989-03-07 Itt Corporation Method and apparatus for use with vortex flowmeters
JP2765881B2 (ja) * 1988-11-09 1998-06-18 三菱電機株式会社 内燃機関の吸入空気量計測装置
CA1311032C (en) * 1989-03-31 1992-12-01 Stanley Chlebda Two-wire telemetering system including power regulated transmitting device
CN1040160C (zh) * 1993-09-07 1998-10-07 罗斯蒙德公司 多变量发送器
US8538560B2 (en) * 2004-04-29 2013-09-17 Rosemount Inc. Wireless power and communication unit for process field devices
US8145180B2 (en) 2004-05-21 2012-03-27 Rosemount Inc. Power generation for process devices
US8787848B2 (en) * 2004-06-28 2014-07-22 Rosemount Inc. RF adapter for field device with low voltage intrinsic safety clamping
US7913566B2 (en) * 2006-05-23 2011-03-29 Rosemount Inc. Industrial process device utilizing magnetic induction
US8250924B2 (en) 2008-04-22 2012-08-28 Rosemount Inc. Industrial process device utilizing piezoelectric transducer
US8694060B2 (en) * 2008-06-17 2014-04-08 Rosemount Inc. Form factor and electromagnetic interference protection for process device wireless adapters
WO2009154756A1 (en) * 2008-06-17 2009-12-23 Rosemount Inc. Rf adapter for field device with variable voltage drop
US8929948B2 (en) * 2008-06-17 2015-01-06 Rosemount Inc. Wireless communication adapter for field devices
US7977924B2 (en) * 2008-11-03 2011-07-12 Rosemount Inc. Industrial process power scavenging device and method of deriving process device power from an industrial process
US9674976B2 (en) 2009-06-16 2017-06-06 Rosemount Inc. Wireless process communication adapter with improved encapsulation
US8626087B2 (en) * 2009-06-16 2014-01-07 Rosemount Inc. Wire harness for field devices used in a hazardous locations
US10761524B2 (en) 2010-08-12 2020-09-01 Rosemount Inc. Wireless adapter with process diagnostics
DE102011114246B4 (de) * 2011-09-19 2015-08-06 Diehl Metering Gmbh Einrichtung zur Energieerzeugung für Durchflussmessgeräte und Verfahren zum Betrieb eines Ultraschalldurchflussmessers
US9310794B2 (en) 2011-10-27 2016-04-12 Rosemount Inc. Power supply for industrial process field device
US11004637B2 (en) * 2018-03-22 2021-05-11 Rosemount Inc. Field device latching relay reset

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783248A (en) * 1971-06-25 1974-01-01 Emerson Electric Co Parity check for turbine meter electronic counting instrumentation or the like
US3873814A (en) * 1973-02-20 1975-03-25 Mohammad Kian Mirdadian Remotely operated net output ticket printer
US3948098A (en) * 1974-04-24 1976-04-06 The Foxboro Company Vortex flow meter transmitter including piezo-electric sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4228150A1 (de) * 1992-08-25 1994-03-03 Telefunken Microelectron Schaltungsanordnung mit einem Sensor

Also Published As

Publication number Publication date
US4084155A (en) 1978-04-11
JPS596434B2 (ja) 1984-02-10
CA1076229A (en) 1980-04-22
FR2405597B3 (enExample) 1980-06-06
JPS5345549A (en) 1978-04-24
FR2405597A1 (enExample) 1979-05-04
GB1580703A (en) 1980-12-03

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Legal Events

Date Code Title Description
8128 New person/name/address of the agent

Representative=s name: MUELLER, H., DIPL.-ING., PAT.-ANW., 8000 MUENCHEN

8110 Request for examination paragraph 44
8139 Disposal/non-payment of the annual fee