IT8667885A0 - Circuito di protezione per la bobina di induzione di un misuratore di portata di tipo magnetico induttivo - Google Patents

Circuito di protezione per la bobina di induzione di un misuratore di portata di tipo magnetico induttivo

Info

Publication number
IT8667885A0
IT8667885A0 IT8667885A IT6788586A IT8667885A0 IT 8667885 A0 IT8667885 A0 IT 8667885A0 IT 8667885 A IT8667885 A IT 8667885A IT 6788586 A IT6788586 A IT 6788586A IT 8667885 A0 IT8667885 A0 IT 8667885A0
Authority
IT
Italy
Prior art keywords
protection circuit
flow meter
induction coil
magnetic flow
inductive magnetic
Prior art date
Application number
IT8667885A
Other languages
English (en)
Other versions
IT1196807B (it
Inventor
Henning Max Hansen
Allan Skovgaard Pedersen
Original Assignee
Danfoss As
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 Danfoss As filed Critical Danfoss As
Publication of IT8667885A0 publication Critical patent/IT8667885A0/it
Application granted granted Critical
Publication of IT1196807B publication Critical patent/IT1196807B/it

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
    • G01F1/58—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters
    • G01F1/60—Circuits therefor
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/008—Intrinsically safe circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Measuring Volume Flow (AREA)
  • Amplifiers (AREA)
IT8667885A 1985-11-28 1986-11-27 Ciruito di protezione per la bobina di induzione di un misuratore di portata di tipo magentico induttivo IT1196807B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853541974 DE3541974A1 (de) 1985-11-28 1985-11-28 Schutzschaltung fuer die induktionsspule eines magnetisch-induktiven durchflussmessers

Publications (2)

Publication Number Publication Date
IT8667885A0 true IT8667885A0 (it) 1986-11-27
IT1196807B IT1196807B (it) 1988-11-25

Family

ID=6287011

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8667885A IT1196807B (it) 1985-11-28 1986-11-27 Ciruito di protezione per la bobina di induzione di un misuratore di portata di tipo magentico induttivo

Country Status (10)

Country Link
US (1) US5045963A (it)
JP (1) JPS62132119A (it)
CA (1) CA1314308C (it)
CH (1) CH671286A5 (it)
DE (1) DE3541974A1 (it)
DK (1) DK163900C (it)
FR (1) FR2590668B1 (it)
GB (1) GB2183943B (it)
IT (1) IT1196807B (it)
NL (1) NL191655C (it)

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DK0543054T3 (da) * 1991-11-22 1995-05-08 Fischer & Porter Gmbh Indretning til måling af strømningshastigheden af en væske, som indeholder elektriske ladninger
DE19739551A1 (de) * 1997-09-09 1999-03-11 Siemens Ag Kurzschlußstrombegrenzung für eine Stromrichterschaltung mit einem kapazitiven Speicher
US6927958B2 (en) * 2002-01-07 2005-08-09 Simmonds Precision Products, Inc. Active transient suppression apparatus for potentially explosive environments
US6714393B2 (en) 2002-01-07 2004-03-30 Simmonds Precision Products, Inc. Transient suppression apparatus for potentially explosive environments
DE10319793B3 (de) * 2003-04-30 2004-11-04 Endress + Hauser Gmbh + Co. Kg Energieversorgung eines Messgerätes
US8160535B2 (en) 2004-06-28 2012-04-17 Rosemount Inc. RF adapter for field device
US7262693B2 (en) 2004-06-28 2007-08-28 Rosemount Inc. Process field device with radio frequency communication
FR2886778B1 (fr) * 2005-06-03 2007-09-07 Schneider Electric Ind Sas Dispositif de protection contre les surtensions et circuit electronique comportant un tel dispositif
US7688057B2 (en) * 2007-07-10 2010-03-30 Rosemount Inc. Noise diagnosis of operating conditions for an electromagnetic flowmeter
CA2726601C (en) 2008-06-17 2016-08-09 Rosemount Inc. Rf adapter for field device with variable voltage drop
US8049361B2 (en) 2008-06-17 2011-11-01 Rosemount Inc. RF adapter for field device with loop current bypass
US8929948B2 (en) 2008-06-17 2015-01-06 Rosemount Inc. Wireless communication adapter for field devices
CA2726707C (en) 2008-06-17 2016-01-19 Rosemount Inc. Rf adapter for field device with low voltage intrinsic safety clamping
US20100053831A1 (en) * 2008-09-02 2010-03-04 Consejo Superior De Investigaciones Cientificas Wideband overvoltage protection circuit
US9674976B2 (en) 2009-06-16 2017-06-06 Rosemount Inc. Wireless process communication adapter with improved encapsulation
US10761524B2 (en) 2010-08-12 2020-09-01 Rosemount Inc. Wireless adapter with process diagnostics
US9310794B2 (en) 2011-10-27 2016-04-12 Rosemount Inc. Power supply for industrial process field device
CN103887787B (zh) * 2014-01-29 2016-08-17 北方工业大学 一种本质安全电感电路的灭弧方法
US11365995B2 (en) 2018-09-28 2022-06-21 Georg Fischer Signet Llc Magnetic flowmeter including auxiliary electrodes upstream and downstream of the pair of measuring electrodes and an adjustable brace
US10712184B1 (en) 2019-01-09 2020-07-14 Georg Fischer Signet Llc Magnetic flowmeter assembly having independent coil drive and control system

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GB641290A (en) * 1948-12-02 1950-08-09 Westinghouse Brake & Signal Improvements relating to the suppression of voltage surges tending to arise due to the switching of transformers
GB977913A (en) * 1962-03-20 1964-12-16 Redding Robert James Improvements in or relating to electrical apparatus and systems
US3213349A (en) * 1962-04-18 1965-10-19 Gen Electric Protective control circuits
US3211929A (en) * 1963-04-26 1965-10-12 Westinghouse Electric Corp Transient suppressor circuit
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US3454834A (en) * 1966-10-25 1969-07-08 United Aircraft Corp Transient suppression switch
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US3631264A (en) * 1970-02-11 1971-12-28 Sybron Corp Intrinsically safe electrical barrier system and improvements therein
DE2019937B2 (de) * 1970-04-24 1972-12-14 Hartmann & Braun Ag, 6000 Frankfurt Einrichtung zum schutz von in explosionsgefaehrdeten raeumen befindlichen verbrauchern und/oder messwertgebern
US3614531A (en) * 1970-08-18 1971-10-19 Joseph V Oswald Shunt means for protecting a power supply against back emf
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US3809999A (en) * 1973-04-19 1974-05-07 Gen Electric Direct current voltage regulator
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US3955413A (en) * 1974-03-27 1976-05-11 Steele James R Electrical system for electromagnetically measuring flow of fluid
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JPS52120317A (en) * 1976-04-02 1977-10-08 Hitachi Ltd Field overvoltage protector for synchronous machine
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FR2377132A1 (fr) * 1977-01-11 1978-08-04 Labo Cent Telecommunicat Dispositif de protection pour joncteur electronique
JPS5388616A (en) * 1977-01-14 1978-08-04 Toshiba Corp Vapor trap
US4181921A (en) * 1977-01-18 1980-01-01 W. N. Phillips, Inc. Harmonic distortion attenuator
JPS5916645B2 (ja) * 1977-03-31 1984-04-17 横河電機株式会社 電磁流量計の励振回路
US4323942A (en) * 1978-12-20 1982-04-06 Bell Telephone Laboratories, Incorporated Solid-state protector circuitry using gated diode switch
DE2937298C2 (de) * 1979-09-12 1985-01-17 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Schaltungsanordnung für eine eigensichere Gleichstrom-Versorgung
JPS5686312A (en) * 1979-12-17 1981-07-14 Yokogawa Hokushin Electric Corp Transmitter for electromagnetic flow rate meter
DE3010099A1 (de) * 1980-02-25 1981-09-03 BBC AG Brown, Boveri & Cie., Baden, Aargau Elektronische schutzschaltung
JPS57198825A (en) * 1981-05-30 1982-12-06 Yokogawa Hokushin Electric Corp Electromagnetic flow meter
US4434396A (en) * 1981-11-02 1984-02-28 Montague Herbert R Power line transient suppression circuit
US4412265A (en) * 1981-11-27 1983-10-25 Tokheim Corporation Intrinsic barrier
SE448333B (sv) * 1982-02-18 1987-02-09 Ericsson Telefon Ab L M Elektronisk sekring ingaende i ett distributionssystem for likstrom
JPS58216406A (ja) * 1982-06-09 1983-12-16 Sanmei Denki Kk ソレノイドコイルの駆動回路
US4462060A (en) * 1982-11-16 1984-07-24 Fischer & Porter Company Constant-current duty-cycle driver for electromagnetic flowmeter
EP0112065A1 (en) * 1982-12-10 1984-06-27 Halliburton Company Power factor correction for magnetic flowmeter
JPS6057214A (ja) * 1983-09-09 1985-04-03 Hitachi Ltd 電磁流量計励磁回路
DE3407800A1 (de) * 1984-03-02 1985-09-05 Brown, Boveri & Cie Ag, 6800 Mannheim Elektronische sicherheitsbarriere
US4594632A (en) * 1984-04-20 1986-06-10 Lima Electric Co., Inc. Overvoltage protection circuit for synchronous machinerotor
JPS61150617A (ja) * 1984-12-24 1986-07-09 日本電信電話株式会社 サ−ジ防護回路

Also Published As

Publication number Publication date
US5045963A (en) 1991-09-03
CH671286A5 (it) 1989-08-15
NL191655B (nl) 1995-08-01
DK163900C (da) 1992-09-14
CA1314308C (en) 1993-03-09
DK467686A (da) 1987-05-29
GB2183943B (en) 1989-10-11
GB8628412D0 (en) 1986-12-31
FR2590668A1 (fr) 1987-05-29
GB2183943A (en) 1987-06-10
FR2590668B1 (fr) 1991-01-18
DE3541974C2 (it) 1988-03-24
DK467686D0 (da) 1986-10-01
IT1196807B (it) 1988-11-25
NL8603027A (nl) 1987-06-16
DK163900B (da) 1992-04-13
DE3541974A1 (de) 1987-06-04
JPS62132119A (ja) 1987-06-15
JPH0554888B2 (it) 1993-08-13
NL191655C (nl) 1995-12-02

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19971129