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FR2095675A5 - - Google Patents

Info

Publication number
FR2095675A5
FR2095675A5 FR7119455A FR7119455A FR2095675A5 FR 2095675 A5 FR2095675 A5 FR 2095675A5 FR 7119455 A FR7119455 A FR 7119455A FR 7119455 A FR7119455 A FR 7119455A FR 2095675 A5 FR2095675 A5 FR 2095675A5
Authority
FR
France
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
FR7119455A
Other languages
French (fr)
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 FR2095675A5 publication Critical patent/FR2095675A5/fr
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)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Emergency Management (AREA)
  • Business, Economics & Management (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Toxicology (AREA)
  • Biochemistry (AREA)
  • Pathology (AREA)
  • Immunology (AREA)
  • General Health & Medical Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
FR7119455A 1970-06-08 1971-05-28 Expired FR2095675A5 (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
FR2095675A5 true FR2095675A5 (en) 1972-02-11

Family

ID=26389475

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7119455A Expired FR2095675A5 (en) 1970-06-08 1971-05-28

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
GB1299326A (en) 1972-12-13
CA927022A (en) 1973-05-22
DE2128477B2 (en) 1972-07-27
DE2128477A1 (en) 1971-12-09
US3775616A (en) 1973-11-27

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Legal Events

Date Code Title Description
ST Notification of lapse