ES381359A1 - Ionization smoke detector - Google Patents

Ionization smoke detector

Info

Publication number
ES381359A1
ES381359A1 ES381359A ES381359A ES381359A1 ES 381359 A1 ES381359 A1 ES 381359A1 ES 381359 A ES381359 A ES 381359A ES 381359 A ES381359 A ES 381359A ES 381359 A1 ES381359 A1 ES 381359A1
Authority
ES
Spain
Prior art keywords
smoke detector
ionization smoke
conical
detector
rod
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
ES381359A
Other languages
Spanish (es)
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.)
Nittan Co Ltd
Original Assignee
Nittan Co 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 Nittan Co Ltd filed Critical Nittan Co Ltd
Publication of ES381359A1 publication Critical patent/ES381359A1/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
    • G08B17/11—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

  • 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)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

In an ionization smoke detector which includes a closed chamber 10 and an open chamber 20 each including a radio-active source 13, 23, a control rod 7 is screwed into the fixed outer electrode 22 to enable the sensitivity of the detector to be varied. The end of the rod 7 may be conical or frusto-conical.
ES381359A 1969-08-08 1970-07-02 Ionization smoke detector Expired ES381359A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6228969 1969-08-08

Publications (1)

Publication Number Publication Date
ES381359A1 true ES381359A1 (en) 1972-11-01

Family

ID=13195797

Family Applications (1)

Application Number Title Priority Date Filing Date
ES381359A Expired ES381359A1 (en) 1969-08-08 1970-07-02 Ionization smoke detector

Country Status (8)

Country Link
CH (1) CH513479A (en)
DE (1) DE2035671B2 (en)
ES (1) ES381359A1 (en)
FR (1) FR2057720A5 (en)
GB (1) GB1274376A (en)
IL (1) IL34813A (en)
NL (1) NL7008947A (en)
ZA (1) ZA703756B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2640384B1 (en) * 1988-12-13 1991-04-12 Morrison Co Ets IONIZATION COMBUSTION GAS DETECTOR

Also Published As

Publication number Publication date
CH513479A (en) 1971-09-30
FR2057720A5 (en) 1971-05-21
IL34813A0 (en) 1970-08-19
NL7008947A (en) 1971-02-10
DE2035671A1 (en) 1971-02-25
IL34813A (en) 1973-07-30
DE2035671B2 (en) 1971-12-30
ZA703756B (en) 1971-06-30
GB1274376A (en) 1972-05-17

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