FR2274982A1 - Installation d'avertissement d'incendie - Google Patents

Installation d'avertissement d'incendie

Info

Publication number
FR2274982A1
FR2274982A1 FR7518562A FR7518562A FR2274982A1 FR 2274982 A1 FR2274982 A1 FR 2274982A1 FR 7518562 A FR7518562 A FR 7518562A FR 7518562 A FR7518562 A FR 7518562A FR 2274982 A1 FR2274982 A1 FR 2274982A1
Authority
FR
France
Prior art keywords
ionisation chamber
alarm
detector
circuit
threshold level
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.)
Pending
Application number
FR7518562A
Other languages
English (en)
Inventor
Yukimitsu Tomita
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.)
Cerberus AG
Original Assignee
Cerberus AG
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 Cerberus AG filed Critical Cerberus AG
Publication of FR2274982A1 publication Critical patent/FR2274982A1/fr
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
    • G08B29/12—Checking intermittently signalling or alarm systems
    • G08B29/14—Checking intermittently signalling or alarm systems checking the detection circuits
    • G08B29/145—Checking intermittently signalling or alarm systems checking the detection circuits of fire detection circuits
    • 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
    • G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Detection Mechanisms (AREA)
FR7518562A 1974-06-14 1975-06-13 Installation d'avertissement d'incendie Pending FR2274982A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH815974A CH583445A5 (fr) 1974-06-14 1974-06-14

Publications (1)

Publication Number Publication Date
FR2274982A1 true FR2274982A1 (fr) 1976-01-09

Family

ID=4336063

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7518562A Pending FR2274982A1 (fr) 1974-06-14 1975-06-13 Installation d'avertissement d'incendie

Country Status (2)

Country Link
CH (1) CH583445A5 (fr)
FR (1) FR2274982A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426298A1 (fr) * 1978-05-18 1979-12-14 Hochiki Co
FR2428289A1 (fr) * 1978-06-07 1980-01-04 Hochiki Co Dispositif de detection d'incendie
EP0384209A2 (fr) * 1989-02-18 1990-08-29 Hartwig Dipl.-Ing. Beyersdorf Procédé pour l'opération d'un détecteur de fumée à ionisation et détecteur de fumée à ionisation
EP0423489A1 (fr) * 1989-09-15 1991-04-24 Cerberus Ag Arrangement pour la détection de fumée avec contrôle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2426298A1 (fr) * 1978-05-18 1979-12-14 Hochiki Co
FR2428289A1 (fr) * 1978-06-07 1980-01-04 Hochiki Co Dispositif de detection d'incendie
EP0384209A2 (fr) * 1989-02-18 1990-08-29 Hartwig Dipl.-Ing. Beyersdorf Procédé pour l'opération d'un détecteur de fumée à ionisation et détecteur de fumée à ionisation
EP0384209A3 (fr) * 1989-02-18 1991-05-08 Hartwig Dipl.-Ing. Beyersdorf Procédé pour l'opération d'un détecteur de fumée à ionisation et détecteur de fumée à ionisation
EP0423489A1 (fr) * 1989-09-15 1991-04-24 Cerberus Ag Arrangement pour la détection de fumée avec contrôle
US5212470A (en) * 1989-09-15 1993-05-18 Cerberus Ltd. Supervised fire alarm system

Also Published As

Publication number Publication date
CH583445A5 (fr) 1976-12-31

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