FR2116395A1 - - Google Patents

Info

Publication number
FR2116395A1
FR2116395A1 FR7140733A FR7140733A FR2116395A1 FR 2116395 A1 FR2116395 A1 FR 2116395A1 FR 7140733 A FR7140733 A FR 7140733A FR 7140733 A FR7140733 A FR 7140733A FR 2116395 A1 FR2116395 A1 FR 2116395A1
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.)
Granted
Application number
FR7140733A
Other languages
French (fr)
Other versions
FR2116395B1 (de
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 FR2116395A1 publication Critical patent/FR2116395A1/fr
Application granted granted Critical
Publication of FR2116395B1 publication Critical patent/FR2116395B1/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
    • 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

Landscapes

  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Business, Economics & Management (AREA)
  • Biochemistry (AREA)
  • Toxicology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Electrochemistry (AREA)
  • Emergency Management (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • General Health & Medical Sciences (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
FR7140733A 1970-11-19 1971-11-15 Expired FR2116395B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1970114352U JPS4940290Y1 (de) 1970-11-19 1970-11-19

Publications (2)

Publication Number Publication Date
FR2116395A1 true FR2116395A1 (de) 1972-07-13
FR2116395B1 FR2116395B1 (de) 1975-07-18

Family

ID=14635583

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7140733A Expired FR2116395B1 (de) 1970-11-19 1971-11-15

Country Status (5)

Country Link
US (1) US3792279A (de)
JP (1) JPS4940290Y1 (de)
DE (1) DE2156906B1 (de)
FR (1) FR2116395B1 (de)
GB (1) GB1300909A (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4223303A (en) * 1978-12-11 1980-09-16 General Electric Company Alarm devices for interconnected multi-device systems
US4401979A (en) * 1981-02-11 1983-08-30 General Signal Corporation Electrical controls for ionization smoke detector
CN103680042A (zh) * 2013-11-30 2014-03-26 成都国科海博信息技术股份有限公司 火灾报警装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3089968A (en) * 1961-06-22 1963-05-14 Gen Precision Inc Non-linear amplifier
US3435257A (en) * 1965-05-17 1969-03-25 Burroughs Corp Threshold biased control circuit for trailing edge triggered flip-flops
US3395265A (en) * 1965-07-26 1968-07-30 Teledyne Inc Temperature controlled microcircuit
CH468683A (de) * 1966-12-29 1969-02-15 Cerberus Ag Werk Fuer Elektron Feuermelder mit einer elektrischen Rückkopplungsanordnung
US3539831A (en) * 1967-06-15 1970-11-10 Tektronix Inc Switching circuit including plural ranks of differential circuits

Also Published As

Publication number Publication date
GB1300909A (en) 1972-12-29
JPS4940290Y1 (de) 1974-11-05
FR2116395B1 (de) 1975-07-18
US3792279A (en) 1974-02-12
DE2156906B1 (de) 1972-05-25

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Legal Events

Date Code Title Description
ST Notification of lapse