FR2175383A5 - - Google Patents

Info

Publication number
FR2175383A5
FR2175383A5 FR7237286A FR7237286A FR2175383A5 FR 2175383 A5 FR2175383 A5 FR 2175383A5 FR 7237286 A FR7237286 A FR 7237286A FR 7237286 A FR7237286 A FR 7237286A FR 2175383 A5 FR2175383 A5 FR 2175383A5
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
FR7237286A
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.)
Bevaknings AB Securitas
Original Assignee
Bevaknings AB Securitas
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 Bevaknings AB Securitas filed Critical Bevaknings AB Securitas
Application granted granted Critical
Publication of FR2175383A5 publication Critical patent/FR2175383A5/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Toxicology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Fire-Detection Mechanisms (AREA)
FR7237286A 1971-10-20 1972-10-20 Expired FR2175383A5 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE13304/71A SE347377B (fr) 1971-10-20 1971-10-20

Publications (1)

Publication Number Publication Date
FR2175383A5 true FR2175383A5 (fr) 1973-10-19

Family

ID=20297181

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7237286A Expired FR2175383A5 (fr) 1971-10-20 1972-10-20

Country Status (8)

Country Link
US (1) US3838283A (fr)
BE (1) BE790355A (fr)
DE (1) DE2250820A1 (fr)
FR (1) FR2175383A5 (fr)
GB (1) GB1341372A (fr)
NL (1) NL7214138A (fr)
NO (1) NO126977B (fr)
SE (1) SE347377B (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4075487A (en) * 1976-05-14 1978-02-21 Patent Development & Management Company Ionization chamber assembly
DE2652970C3 (de) * 1976-11-22 1979-09-06 Hartwig Ing.(Grad.) 2409 Scharbeutz Beyersdorf Ionisations-Brandmelder
US4238679A (en) * 1978-12-07 1980-12-09 Conrac Corporation Dual-chamber ionization smoke detector assembly
FR2473201A1 (fr) * 1980-01-02 1981-07-10 Gamma Electronic Detecteur de fumees capacitif a faible source d'ionisation
JPH03196292A (ja) * 1989-12-25 1991-08-27 Hochiki Corp イオン化式煙感知器
ES2070748B1 (es) * 1993-05-17 1996-05-16 Kilsen Sa Detector ionico de humos.
DE9416314U1 (de) 1994-10-10 1994-12-01 Fritz Fuss Gmbh & Co, 72458 Albstadt Rauchmelder
DE19627620C1 (de) * 1996-07-09 1997-11-13 Bruker Saxonia Analytik Gmbh Elektroneneinfangdetektor
EP1733220B1 (fr) * 2004-03-31 2011-01-19 Mine Safety Appliances Company Detecteur de photoionisation
US20050218811A1 (en) * 2004-03-31 2005-10-06 Schulman Michael B Gas discharge lamp with high-energy vacuum ultraviolet emission
US7504962B2 (en) * 2005-11-22 2009-03-17 Joseph Stephen Smith Apparatus for enclosing a smoke detector
CN100414291C (zh) * 2006-03-17 2008-08-27 中国科学院安徽光学精密机械研究所 一种便携式光离子化检测器的电离室

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS446089Y1 (fr) * 1966-03-30 1969-03-05
DE2029485B2 (de) * 1969-06-21 1971-11-25 Nittan Co. Ltd., Tokio Ionisations rauchfuehler
ZA704724B (en) * 1969-07-22 1971-03-31 Nittan Co Ltd Ionization smoke detector

Also Published As

Publication number Publication date
NL7214138A (fr) 1973-04-25
GB1341372A (en) 1973-12-19
US3838283A (en) 1974-09-24
BE790355A (fr) 1973-02-15
NO126977B (fr) 1973-04-16
DE2250820A1 (de) 1973-04-26
SE347377B (fr) 1972-07-31

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Legal Events

Date Code Title Description
ST Notification of lapse