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GB1556061A - Monitor and alarm apparatus in loop line system - Google Patents

Monitor and alarm apparatus in loop line system

Info

Publication number
GB1556061A
GB1556061A GB3520576A GB3520576A GB1556061A GB 1556061 A GB1556061 A GB 1556061A GB 3520576 A GB3520576 A GB 3520576A GB 3520576 A GB3520576 A GB 3520576A GB 1556061 A GB1556061 A GB 1556061A
Authority
GB
United Kingdom
Prior art keywords
monitor
line system
loop line
alarm apparatus
alarm
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
GB3520576A
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.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
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
Priority claimed from JP10463275A external-priority patent/JPS5228298A/en
Priority claimed from JP50120006A external-priority patent/JPS5244655A/en
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Publication of GB1556061A publication Critical patent/GB1556061A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B26/00—Alarm systems in which substations are interrogated in succession by a central station
    • G08B26/001—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel
    • G08B26/003—Alarm systems in which substations are interrogated in succession by a central station with individual interrogation of substations connected in parallel replying the identity and the state of the sensor
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B26/00—Alarm systems in which substations are interrogated in succession by a central station
    • G08B26/005—Alarm systems in which substations are interrogated in succession by a central station with substations connected in series, e.g. cascade

Landscapes

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Selective Calling Equipment (AREA)
GB3520576A 1975-08-28 1976-08-24 Monitor and alarm apparatus in loop line system Expired GB1556061A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10463275A JPS5228298A (en) 1975-08-28 1975-08-28 Supervisory alarm unit by loop circuit system
JP50120006A JPS5244655A (en) 1975-10-03 1975-10-03 Centralized control unit for a gas leak

Publications (1)

Publication Number Publication Date
GB1556061A true GB1556061A (en) 1979-11-21

Family

ID=26445071

Family Applications (2)

Application Number Title Priority Date Filing Date
GB3520576A Expired GB1556061A (en) 1975-08-28 1976-08-24 Monitor and alarm apparatus in loop line system
GB1927177A Expired GB1556062A (en) 1975-08-28 1976-08-24 Centralised monitoring system for gas leakage

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB1927177A Expired GB1556062A (en) 1975-08-28 1976-08-24 Centralised monitoring system for gas leakage

Country Status (6)

Country Link
BR (1) BR7605636A (en)
DE (1) DE2638529A1 (en)
FR (1) FR2322411A1 (en)
GB (2) GB1556061A (en)
IT (1) IT1066426B (en)
NL (1) NL7609588A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2817089B2 (en) * 1978-04-19 1980-12-18 Siemens Ag, 1000 Berlin Und 8000 Muenchen Alarm system
DE2946169C2 (en) * 1979-11-15 1986-12-11 Brown, Boveri & Cie Ag, 6800 Mannheim Method for determining the status of certain alarm transmitters in a surveillance system
CH651688A5 (en) * 1980-06-23 1985-09-30 Cerberus Ag METHOD FOR TRANSMITTING MEASURED VALUES IN A FIRE DETECTING SYSTEM AND DEVICE FOR IMPLEMENTING THE METHOD.
DE3141624A1 (en) * 1980-10-20 1982-08-26 Ricoh Co., Ltd., Tokyo Central alarm system
CA1178678A (en) * 1981-03-13 1984-11-27 John M. Wynne Bidirectional, interactive fire detection system
JPS58127292A (en) * 1982-01-26 1983-07-29 ニツタン株式会社 Fire sensing system
DE3336290A1 (en) * 1982-10-08 1984-06-07 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Method for the teletransmission of data of a heating or cooling system
JPS5963792U (en) * 1982-10-22 1984-04-26 ニツタン株式会社 Photoelectric smoke detection terminal
JPS5977594A (en) * 1982-10-27 1984-05-04 ニツタン株式会社 Fire alarm system
US4558319A (en) * 1982-12-07 1985-12-10 Westinghouse Electric Corp. Automated system monitoring using frequency and amplitude modulation
DE3405857A1 (en) * 1983-02-24 1984-08-30 Hochiki K.K., Tokio/Tokyo FIRE ALARM SYSTEM
JPS59201193A (en) * 1983-04-30 1984-11-14 松下電工株式会社 Fire alarm system
JPS60117939A (en) * 1983-11-30 1985-06-25 Matsushita Electric Works Ltd Information transmission system
GB8431883D0 (en) * 1984-12-18 1985-01-30 Gent Ltd Transmission system
GB2172175B (en) * 1985-02-15 1989-04-05 Hitachi Ltd Method for controlling ring network
DE3614692A1 (en) * 1986-04-30 1987-11-05 Nixdorf Computer Ag DANGER REPORTING SYSTEM
DE3744208A1 (en) * 1987-12-24 1989-07-06 Rieter Ag Maschf METHOD AND DEVICE FOR TRANSMITTING INFORMATION IN A MANUFACTURING MACHINE HAVING A VARIETY OF PRODUCTION POINTS

Also Published As

Publication number Publication date
NL7609588A (en) 1977-03-02
IT1066426B (en) 1985-03-12
FR2322411A1 (en) 1977-03-25
FR2322411B1 (en) 1980-07-04
BR7605636A (en) 1977-08-09
GB1556062A (en) 1979-11-21
DE2638529A1 (en) 1977-03-10

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee