CA927022A - Ionization smoke detector - Google Patents

Ionization smoke detector

Info

Publication number
CA927022A
CA927022A CA113545A CA113545A CA927022A CA 927022 A CA927022 A CA 927022A CA 113545 A CA113545 A CA 113545A CA 113545 A CA113545 A CA 113545A CA 927022 A CA927022 A CA 927022A
Authority
CA
Canada
Prior art keywords
smoke detector
ionization smoke
ionization
detector
smoke
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
CA113545A
Other versions
CA113545S (en
Inventor
Tagashira Hiroshi
Saito Katsutoshi
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
Priority claimed from JP4911170A external-priority patent/JPS4840318B1/ja
Priority claimed from JP7453270A external-priority patent/JPS4911800B1/ja
Application filed by Nittan Co Ltd filed Critical Nittan Co Ltd
Application granted granted Critical
Publication of CA927022A publication Critical patent/CA927022A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01N27/66—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 and measuring current or voltage
    • 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

  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Management (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Pathology (AREA)
  • Toxicology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Immunology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Electrochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Biochemistry (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
CA113545A 1970-06-08 1971-05-20 Ionization smoke detector Expired CA927022A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4911170A JPS4840318B1 (en) 1970-06-08 1970-06-08
JP7453270A JPS4911800B1 (en) 1970-08-27 1970-08-27

Publications (1)

Publication Number Publication Date
CA927022A true CA927022A (en) 1973-05-22

Family

ID=26389475

Family Applications (1)

Application Number Title Priority Date Filing Date
CA113545A Expired CA927022A (en) 1970-06-08 1971-05-20 Ionization smoke detector

Country Status (4)

Country Link
US (1) US3775616A (en)
CA (1) CA927022A (en)
FR (1) FR2095675A5 (en)
GB (1) GB1299326A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4109240A (en) * 1973-11-26 1978-08-22 Cerberus Ag. Ionization-type fire sensing system
US3944859A (en) * 1974-09-03 1976-03-16 Rca Corporation Bridge-balance detection circuit
CH597659A5 (en) * 1976-02-06 1978-04-14 Cerberus Ag
US4176311A (en) * 1976-12-23 1979-11-27 General Electric Company Positive ion smoke detector using a tungsten wire preheated in hydrogen to increase sensitivity
JPH0530236Y2 (en) * 1987-10-05 1993-08-02

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH446131A (en) * 1966-02-22 1967-10-31 Cerberus Ag Ionization fire alarm system
JPS446089Y1 (en) * 1966-03-30 1969-03-05
US3513311A (en) * 1968-02-29 1970-05-19 Fike Metal Prod Corp Radiation sensitive apparatus for activating a fire or explosion protection system
US3541539A (en) * 1968-11-29 1970-11-17 Us Air Force Integrated fire and overheat detection system for manned flight vehicles

Also Published As

Publication number Publication date
FR2095675A5 (en) 1972-02-11
DE2128477B2 (en) 1972-07-27
GB1299326A (en) 1972-12-13
DE2128477A1 (en) 1971-12-09
US3775616A (en) 1973-11-27

Similar Documents

Publication Publication Date Title
CA950556A (en) Smoke detectors
CA927022A (en) Ionization smoke detector
ZA704724B (en) Ionization smoke detector
IL34107A0 (en) Ionization smoke detector
CA948333A (en) Ionization smoke detector
IL35151A0 (en) Ionization smoke detector
IL33654A (en) Ionization smoke detector
CA944490A (en) Ionization type smoke sensing device
AU424659B2 (en) Ionization smoke detector
CA931670A (en) Ionization smoke detector
AU414216B2 (en) Ionization smoke detector
AU414214B2 (en) Ionization smoke detector
AU423137B2 (en) Ionization smike detector
CA928872A (en) Ionization smoke detector
AU1774970A (en) Ionization smoke detector
AU1603070A (en) Ionization smoke detector
AU1396370A (en) Ionization smoke detector
CA909400A (en) Ionization smoke detector
AU419283B2 (en) Smoke detector
CA853878A (en) Smoke detectors
AU419207B2 (en) Ionization smoke detector
AU428350B2 (en) Ionization smoke detector
AU423141B2 (en) Ionization smoke detector
ZA707585B (en) Ionization smoke detector
CA893934A (en) Ionization smoke detector