DE2428325A1 - Ionisations-feuermelder - Google Patents

Ionisations-feuermelder

Info

Publication number
DE2428325A1
DE2428325A1 DE19742428325 DE2428325A DE2428325A1 DE 2428325 A1 DE2428325 A1 DE 2428325A1 DE 19742428325 DE19742428325 DE 19742428325 DE 2428325 A DE2428325 A DE 2428325A DE 2428325 A1 DE2428325 A1 DE 2428325A1
Authority
DE
Germany
Prior art keywords
ionization
fire alarm
alarm according
electrode
chambers
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Withdrawn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
DE19742428325
Other languages
German (de)
English (en)
Inventor
Arlon D Kompelien
Larry D Larsen
Joseph C Pekarek
Gerald D Rork
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.)
Honeywell Inc
Original Assignee
Honeywell Inc
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 US00372557A external-priority patent/US3849685A/en
Priority claimed from US00372552A external-priority patent/US3832552A/en
Application filed by Honeywell Inc filed Critical Honeywell Inc
Publication of DE2428325A1 publication Critical patent/DE2428325A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
    • H01J41/02—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas
    • H01J41/08—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas with ionisation by means of radioactive substances, e.g. alphatrons
    • 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
    • G08B17/113—Constructional details

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fire-Detection Mechanisms (AREA)
DE19742428325 1973-06-22 1974-06-12 Ionisations-feuermelder Withdrawn DE2428325A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US00372557A US3849685A (en) 1973-06-22 1973-06-22 Ionization chamber with recessed radioactive body
US00372552A US3832552A (en) 1973-06-22 1973-06-22 Dual chamber ionization smoke detector

Publications (1)

Publication Number Publication Date
DE2428325A1 true DE2428325A1 (de) 1975-01-23

Family

ID=27005819

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19742428325 Withdrawn DE2428325A1 (de) 1973-06-22 1974-06-12 Ionisations-feuermelder

Country Status (3)

Country Link
AU (1) AU6988674A (xx)
CH (1) CH567310A5 (xx)
DE (1) DE2428325A1 (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5243330A (en) * 1990-12-04 1993-09-07 Cerberus Ag Fire detector system and method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5243330A (en) * 1990-12-04 1993-09-07 Cerberus Ag Fire detector system and method

Also Published As

Publication number Publication date
AU6988674A (en) 1975-12-11
CH567310A5 (xx) 1975-09-30

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
8130 Withdrawal