ZA707457B - Intrinsically safe electrical barrier system and improvements therein - Google Patents

Intrinsically safe electrical barrier system and improvements therein

Info

Publication number
ZA707457B
ZA707457B ZA707457A ZA707457A ZA707457B ZA 707457 B ZA707457 B ZA 707457B ZA 707457 A ZA707457 A ZA 707457A ZA 707457 A ZA707457 A ZA 707457A ZA 707457 B ZA707457 B ZA 707457B
Authority
ZA
South Africa
Prior art keywords
barrier system
intrinsically safe
electrical barrier
safe electrical
intrinsically
Prior art date
Application number
ZA707457A
Other languages
English (en)
Inventor
M Morgan
Original Assignee
Sybron Corp
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 Sybron Corp filed Critical Sybron Corp
Publication of ZA707457B publication Critical patent/ZA707457B/xx

Links

Classifications

    • 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
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
    • 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

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Pens And Brushes (AREA)
  • Alarm Systems (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
ZA707457A 1970-02-11 1970-11-03 Intrinsically safe electrical barrier system and improvements therein ZA707457B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1036470A 1970-02-11 1970-02-11

Publications (1)

Publication Number Publication Date
ZA707457B true ZA707457B (en) 1972-06-28

Family

ID=21745408

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA707457A ZA707457B (en) 1970-02-11 1970-11-03 Intrinsically safe electrical barrier system and improvements therein

Country Status (9)

Country Link
US (1) US3631264A (xx)
JP (1) JPS461066A (xx)
KR (1) KR790000034B1 (xx)
CA (1) CA938669A (xx)
DE (1) DE2056669C3 (xx)
FR (1) FR2079352B1 (xx)
GB (2) GB1341409A (xx)
NL (1) NL165011C (xx)
ZA (1) ZA707457B (xx)

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE788539A (fr) * 1971-09-10 1973-03-08 Westinghouse Electric Corp Systeme electrique a barriere d'energie
US3845356A (en) * 1972-04-06 1974-10-29 Foxboro Co Process control system for hazardous areas
GB1412036A (en) * 1972-04-06 1975-10-29 Foxboro Co Interface assembly in a process control system for use where there is a fire hazard
US3813578A (en) * 1973-01-03 1974-05-28 Fisher Controls Co Electrical safety barrier
US3916220A (en) * 1974-04-02 1975-10-28 Denes Roveti Current control electronic switch
US3997733A (en) * 1975-05-01 1976-12-14 Browne-Davies Electronic Corporation Intrinsically safe communication systems
FR2359532A1 (fr) * 1976-07-20 1978-02-17 Cit Alcatel Dispositif de limitation des variations de potentiel des bornes d'une charge alimentee par une source de courant continu a masse flottante
FR2368752A1 (fr) * 1976-10-20 1978-05-19 Labo Cent Telecommunicat Dipole electronique a limitation de courant
SE414357B (sv) * 1978-08-17 1980-07-21 Asea Ab Overspenningsskydd for skydd av halvledarkomponenter av lageffekttyp
US4389695A (en) * 1981-02-09 1983-06-21 Carpenter Jr Roy B Equipment for protecting electronic equipment and personnel against inadvertent occurrence of extended or transient high voltages and method
US4420840A (en) * 1981-08-17 1983-12-13 Livermore Thomas R Intrinsically safe photoelectric sensing
DE3340927A1 (de) * 1983-11-11 1985-05-23 Siemens AG, 1000 Berlin und 8000 München Schaltungsanordnung zur ableitung von ueberspannungen
DE3407800A1 (de) * 1984-03-02 1985-09-05 Brown, Boveri & Cie Ag, 6800 Mannheim Elektronische sicherheitsbarriere
DE3541974A1 (de) * 1985-11-28 1987-06-04 Danfoss As Schutzschaltung fuer die induktionsspule eines magnetisch-induktiven durchflussmessers
GB8722680D0 (en) * 1987-09-26 1987-11-04 Measurement Tech Ltd Electrical safety barriers
US4954923A (en) * 1988-08-19 1990-09-04 Cooper Industries, Inc. Intrinsic safety module interface
GB2250871B (en) * 1990-12-12 1994-07-20 British Gas Plc Data transmission system
JPH05184062A (ja) * 1991-12-27 1993-07-23 Mitsubishi Materials Corp 通信回線用サージ吸収器及びこれを用いたサージ吸収回路
FR2769142B1 (fr) * 1997-09-29 1999-12-17 Sgs Thomson Microelectronics Circuit de protection associable a un filtre
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
US20040080890A1 (en) * 2002-10-25 2004-04-29 Hawke Cable Glands Limited Digital instrumentation
DE10356985A1 (de) * 2003-12-05 2005-07-07 Cooper Crouse-Hinds Gmbh Datenübertragungseinrichtung
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
US8160535B2 (en) 2004-06-28 2012-04-17 Rosemount Inc. RF adapter for field device
EP1982397B1 (en) * 2006-01-24 2019-07-10 Fisher Controls International Llc Flameproof apparatus using non-grounded energy-limiting barrier
US8223540B2 (en) * 2007-02-02 2012-07-17 Macronix International Co., Ltd. Method and apparatus for double-sided biasing of nonvolatile memory
WO2009154756A1 (en) 2008-06-17 2009-12-23 Rosemount Inc. Rf adapter for field device with variable voltage drop
US8694060B2 (en) 2008-06-17 2014-04-08 Rosemount Inc. Form factor and electromagnetic interference protection for process device wireless adapters
US8929948B2 (en) 2008-06-17 2015-01-06 Rosemount Inc. Wireless communication adapter for field devices
CN102084307B (zh) * 2008-06-17 2014-10-29 罗斯蒙特公司 用于具有低压本质安全钳的现场设备的rf适配器
US8626087B2 (en) 2009-06-16 2014-01-07 Rosemount Inc. Wire harness for field devices used in a hazardous locations
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
EP2807524B1 (de) * 2012-01-27 2018-08-22 Pepperl & Fuchs GmbH Anschlussmodul für feldgeräte im explosionsgeschützten bereich
US11856732B2 (en) * 2021-09-14 2023-12-26 Volley Boast, LLC Pluggable intrinsically safe barrier

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3191057A (en) * 1961-07-20 1965-06-22 Sperry Rand Corp Current adder type logic circuit
NL276219A (xx) * 1962-03-21 1964-10-12
US3146358A (en) * 1962-07-03 1964-08-25 American Mach & Foundry Abnormal voltage detection circuits
US3317792A (en) * 1964-03-20 1967-05-02 Westinghouse Electric Corp Load protection circuit
US3475653A (en) * 1965-01-11 1969-10-28 Res Iii Inc Electrical circuit protector
GB1133750A (en) * 1966-12-02 1968-11-13 Foxboro Yoxall Ltd Electrical barrier device

Also Published As

Publication number Publication date
KR790000034B1 (en) 1979-02-26
NL7100040A (xx) 1971-08-13
GB1341409A (en) 1973-12-19
JPS461066A (xx) 1971-09-10
CA938669A (en) 1973-12-18
GB1341410A (en) 1973-12-19
DE2056669C3 (de) 1979-01-25
DE2056669B2 (de) 1978-05-24
FR2079352A1 (xx) 1971-11-12
NL165011B (nl) 1980-09-15
NL165011C (nl) 1981-02-16
US3631264A (en) 1971-12-28
FR2079352B1 (xx) 1975-07-04
DE2056669A1 (de) 1971-08-19

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