FR2396370A1 - Fire detection and alarm system - uses detectors for fluid pressure variation in enclosure and has one responsive to pressure variation - Google Patents

Fire detection and alarm system - uses detectors for fluid pressure variation in enclosure and has one responsive to pressure variation

Info

Publication number
FR2396370A1
FR2396370A1 FR7719993A FR7719993A FR2396370A1 FR 2396370 A1 FR2396370 A1 FR 2396370A1 FR 7719993 A FR7719993 A FR 7719993A FR 7719993 A FR7719993 A FR 7719993A FR 2396370 A1 FR2396370 A1 FR 2396370A1
Authority
FR
France
Prior art keywords
pressure variation
enclosure
pressure
responsive
alarm system
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.)
Withdrawn
Application number
FR7719993A
Other languages
French (fr)
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.)
Stoppani SA Ets Meca Precision
Original Assignee
Stoppani SA Ets Meca Precision
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 Stoppani SA Ets Meca Precision filed Critical Stoppani SA Ets Meca Precision
Priority to FR7719993A priority Critical patent/FR2396370A1/en
Publication of FR2396370A1 publication Critical patent/FR2396370A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/20—Actuation by change of fluid pressure
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/04—Hydraulic or pneumatic actuation of the alarm, e.g. by change of fluid pressure

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The system uses an enclosure (5) fitted with equipment for pressurising a fluid contained in the enclosure. The pressure introduced is greater than ambient when there is no fire. The system has detectors (6, 7) including a pressure variation detector. These detectors react, to control the operation of a fire alarm, to any pressure which varies with at least a determined rate. A min. pressure detector reacts to control alarm operation for any fall in pressure below a min. safe operating value lower than the normal pressure in the absence of fire.
FR7719993A 1977-06-29 1977-06-29 Fire detection and alarm system - uses detectors for fluid pressure variation in enclosure and has one responsive to pressure variation Withdrawn FR2396370A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7719993A FR2396370A1 (en) 1977-06-29 1977-06-29 Fire detection and alarm system - uses detectors for fluid pressure variation in enclosure and has one responsive to pressure variation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7719993A FR2396370A1 (en) 1977-06-29 1977-06-29 Fire detection and alarm system - uses detectors for fluid pressure variation in enclosure and has one responsive to pressure variation

Publications (1)

Publication Number Publication Date
FR2396370A1 true FR2396370A1 (en) 1979-01-26

Family

ID=9192733

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7719993A Withdrawn FR2396370A1 (en) 1977-06-29 1977-06-29 Fire detection and alarm system - uses detectors for fluid pressure variation in enclosure and has one responsive to pressure variation

Country Status (1)

Country Link
FR (1) FR2396370A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10002508B2 (en) 2016-02-10 2018-06-19 Kidde Technologies, Inc. Pneumatic fire detectors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10002508B2 (en) 2016-02-10 2018-06-19 Kidde Technologies, Inc. Pneumatic fire detectors

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