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CA944490A - Ionization type smoke sensing device - Google Patents

Ionization type smoke sensing device

Info

Publication number
CA944490A
CA944490A CA126,312A CA126312A CA944490A CA 944490 A CA944490 A CA 944490A CA 126312 A CA126312 A CA 126312A CA 944490 A CA944490 A CA 944490A
Authority
CA
Canada
Prior art keywords
sensing device
type smoke
smoke sensing
ionization type
ionization
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
CA126,312A
Other versions
CA126312S (en
Inventor
Shigeru Matsumoto
Tsunehiko Araki
Yoshihiko Okuda
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Application granted granted Critical
Publication of CA944490A publication Critical patent/CA944490A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T7/00—Details of radiation-measuring instruments
    • G01T7/12—Provision for actuation of an alarm
    • G01T7/125—Alarm- or controlling circuits using ionisation chambers, proportional counters or Geiger-Mueller tubes, also functioning as UV detectors
    • 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
    • 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
    • G08B17/113—Constructional details

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
CA126,312A 1970-11-05 1971-10-28 Ionization type smoke sensing device Expired CA944490A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9771770 1970-11-05

Publications (1)

Publication Number Publication Date
CA944490A true CA944490A (en) 1974-03-26

Family

ID=14199627

Family Applications (1)

Application Number Title Priority Date Filing Date
CA126,312A Expired CA944490A (en) 1970-11-05 1971-10-28 Ionization type smoke sensing device

Country Status (5)

Country Link
CA (1) CA944490A (en)
CH (1) CH534403A (en)
DE (1) DE2153409A1 (en)
FR (1) FR2112473B1 (en)
GB (1) GB1364720A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO174606C (en) * 1991-06-17 1994-06-01 Bjoern Rennemo Method and apparatus for measuring smoke concentration
WO2012091709A1 (en) 2010-12-30 2012-07-05 Utc Fire & Security Corporation Ionization device

Also Published As

Publication number Publication date
CH534403A (en) 1973-02-28
GB1364720A (en) 1974-08-29
FR2112473B1 (en) 1974-10-31
DE2153409A1 (en) 1972-05-25
FR2112473A1 (en) 1972-06-16

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