NL99411C - - Google Patents

Info

Publication number
NL99411C
NL99411C NL99411DA NL99411C NL 99411 C NL99411 C NL 99411C NL 99411D A NL99411D A NL 99411DA NL 99411 C NL99411 C NL 99411C
Authority
NL
Netherlands
Application number
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.)
Publication of NL99411C publication Critical patent/NL99411C/xx

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
    • 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)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Measurement Of Radiation (AREA)
NL99411D 1957-01-25 NL99411C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH854594X 1957-01-25

Publications (1)

Publication Number Publication Date
NL99411C true NL99411C (en)

Family

ID=4542563

Family Applications (1)

Application Number Title Priority Date Filing Date
NL99411D NL99411C (en) 1957-01-25

Country Status (6)

Country Link
US (1) US2994768A (en)
CH (1) CH346795A (en)
DE (1) DE1046372B (en)
FR (1) FR1198450A (en)
GB (1) GB854594A (en)
NL (1) NL99411C (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3102200A (en) * 1959-05-29 1963-08-27 Gen Electric Penetrating radiation measurement by ionization of a particle bearing aerosol
GB929883A (en) * 1960-01-26 1963-06-26 Nat Res Dev Improvements in or relating to the detection and/or analysis of low concentrations of gases and vapour
DE1133921B (en) * 1960-04-05 1962-07-26 Hans Christoph Siegmann Dipl P Arrangement for the relative determination of the dust content of the air using an ionization chamber containing a radioactive preparation
US3185845A (en) * 1961-02-15 1965-05-25 Continental Oil Co Method of and apparatus for analyzing chemical compounds
NL286979A (en) * 1962-01-10 1900-01-01
FR1403080A (en) * 1964-05-08 1965-06-18 Centre Nat Rech Scient Device for measuring atmospheric pressure in a wide pressure range
FR1540305A (en) * 1967-02-09 1968-09-27 Advanced fire detection device
FR1568048A (en) * 1968-01-19 1969-05-23
USRE30323E (en) * 1968-09-26 1980-07-01 Hochiki Kabushiki Kaisha Smoke detector adapted to a smoke sensing apparatus
GB1280304A (en) * 1968-09-26 1972-07-05 Hochiki Co A smoke sensing detector for smoke sensing apparatus
CH597659A5 (en) * 1976-02-06 1978-04-14 Cerberus Ag
US4027165A (en) * 1976-02-17 1977-05-31 The United States Of America As Represented By The United States Energy Research And Development Administration Ionization detection system for aerosols
US4168497A (en) * 1976-03-15 1979-09-18 Cerberus Ag Fire and smoke sensing system
US4185196A (en) * 1978-01-13 1980-01-22 General Electric Company Ionization smoke detector having improved stability and sensitivity
US4245174A (en) * 1978-04-24 1981-01-13 Isotec Industries Limited Dual ionization chamber
US4213047A (en) * 1978-10-25 1980-07-15 General Signal Corporation Smoke detector having unipolar ionization chamber
US4362941A (en) * 1981-01-26 1982-12-07 Honeywell Inc. Apparatus and a method for detecting and measuring trace gases in air or other gaseous background
JP4145360B2 (en) 1997-05-20 2008-09-03 ライカ ミクロスコピー ズュステーメ アーゲー Especially the stand for surgical microscope

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2408051A (en) * 1942-04-04 1946-09-24 American District Telegraph Co Fire and smoke detector and the like
US2594777A (en) * 1950-07-14 1952-04-29 Ionics Ion controller
US2785312A (en) * 1953-09-21 1957-03-12 Ionaire Inc Ion generator using radioactive material
US2702898A (en) * 1953-10-06 1955-02-22 Electro Watt Electrical And In Gas-responsive control apparatus

Also Published As

Publication number Publication date
GB854594A (en) 1960-11-23
DE1046372B (en) 1958-12-11
FR1198450A (en) 1959-12-07
CH346795A (en) 1960-05-31
US2994768A (en) 1961-08-01

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