IL35151A - Ionization smoke detector - Google Patents

Ionization smoke detector

Info

Publication number
IL35151A
IL35151A IL35151A IL3515170A IL35151A IL 35151 A IL35151 A IL 35151A IL 35151 A IL35151 A IL 35151A IL 3515170 A IL3515170 A IL 3515170A IL 35151 A IL35151 A IL 35151A
Authority
IL
Israel
Prior art keywords
ionization
voltage
smoke detector
electrode
field effect
Prior art date
Application number
IL35151A
Other languages
English (en)
Other versions
IL35151A0 (en
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
Priority claimed from JP6683969A external-priority patent/JPS4819118B1/ja
Application filed by Nittan Co Ltd filed Critical Nittan Co Ltd
Publication of IL35151A0 publication Critical patent/IL35151A0/xx
Publication of IL35151A publication Critical patent/IL35151A/en

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
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
    • G01N27/64—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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 SYSTEMS, e.g. PERSONAL 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

  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • General Health & Medical Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Biochemistry (AREA)
  • Toxicology (AREA)
  • Immunology (AREA)
  • Pathology (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)
IL35151A 1969-07-24 1970-08-23 Ionization smoke detector IL35151A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5797969 1969-07-24
JP6683969A JPS4819118B1 (de) 1969-08-26 1969-08-26

Publications (2)

Publication Number Publication Date
IL35151A0 IL35151A0 (en) 1970-10-30
IL35151A true IL35151A (en) 1973-08-29

Family

ID=26399064

Family Applications (1)

Application Number Title Priority Date Filing Date
IL35151A IL35151A (en) 1969-07-24 1970-08-23 Ionization smoke detector

Country Status (7)

Country Link
US (1) US3688119A (de)
CH (1) CH526178A (de)
DE (1) DE2036447B2 (de)
FR (1) FR2055543A5 (de)
GB (1) GB1282536A (de)
IL (1) IL35151A (de)
NL (1) NL7010779A (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3812362A (en) * 1973-07-02 1974-05-21 Honeywell Inc Smoke detector circuit
CH586941A5 (de) * 1975-07-25 1977-04-15 Cerberus Ag
US4228429A (en) * 1977-12-29 1980-10-14 Ricoh Company, Ltd. Alarm system having phase-sensitive bridge circuit
US4401979A (en) * 1981-02-11 1983-08-30 General Signal Corporation Electrical controls for ionization smoke detector

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3516083A (en) * 1965-12-02 1970-06-02 Denske Securitas As Electric alarm system,preferably for a fire alarm
JPS446089Y1 (de) * 1966-03-30 1969-03-05

Also Published As

Publication number Publication date
NL7010779A (de) 1971-01-26
DE2036447A1 (de) 1971-02-25
CH526178A (de) 1972-07-31
IL35151A0 (en) 1970-10-30
DE2036447B2 (de) 1972-03-02
GB1282536A (en) 1972-07-19
US3688119A (en) 1972-08-29
FR2055543A5 (de) 1971-05-07

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