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GB2034026B - Heat or smoke detector circuit - Google Patents

Heat or smoke detector circuit

Info

Publication number
GB2034026B
GB2034026B GB7931966A GB7931966A GB2034026B GB 2034026 B GB2034026 B GB 2034026B GB 7931966 A GB7931966 A GB 7931966A GB 7931966 A GB7931966 A GB 7931966A GB 2034026 B GB2034026 B GB 2034026B
Authority
GB
United Kingdom
Prior art keywords
heat
detector circuit
smoke detector
smoke
circuit
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
GB7931966A
Other versions
GB2034026A (en
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.)
Chubb Fire Ltd
Original Assignee
Chubb Fire Security 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
Application filed by Chubb Fire Security Ltd filed Critical Chubb Fire Security Ltd
Priority to GB7931966A priority Critical patent/GB2034026B/en
Publication of GB2034026A publication Critical patent/GB2034026A/en
Application granted granted Critical
Publication of GB2034026B publication Critical patent/GB2034026B/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
GB7931966A 1978-09-29 1979-09-14 Heat or smoke detector circuit Expired GB2034026B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7931966A GB2034026B (en) 1978-09-29 1979-09-14 Heat or smoke detector circuit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7838757 1978-09-29
GB7931966A GB2034026B (en) 1978-09-29 1979-09-14 Heat or smoke detector circuit

Publications (2)

Publication Number Publication Date
GB2034026A GB2034026A (en) 1980-05-29
GB2034026B true GB2034026B (en) 1983-03-23

Family

ID=26269012

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7931966A Expired GB2034026B (en) 1978-09-29 1979-09-14 Heat or smoke detector circuit

Country Status (1)

Country Link
GB (1) GB2034026B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109215273A (en) * 2018-09-06 2019-01-15 赛特威尔电子股份有限公司 A kind of fire alarm control system and method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135446B (en) * 1983-02-11 1986-05-08 Itt Ind Ltd Fluid flow measurement
JPS62269293A (en) * 1986-05-19 1987-11-21 石井　弘允 Fire alarm
DE102004004098B3 (en) 2004-01-27 2005-09-01 Wagner Alarm- Und Sicherungssysteme Gmbh Method for evaluating a scattered light signal and scattered light detector for carrying out the method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109215273A (en) * 2018-09-06 2019-01-15 赛特威尔电子股份有限公司 A kind of fire alarm control system and method

Also Published As

Publication number Publication date
GB2034026A (en) 1980-05-29

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Legal Events

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