CH616768A5 - - Google Patents

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Publication number
CH616768A5
CH616768A5 CH815377A CH815377A CH616768A5 CH 616768 A5 CH616768 A5 CH 616768A5 CH 815377 A CH815377 A CH 815377A CH 815377 A CH815377 A CH 815377A CH 616768 A5 CH616768 A5 CH 616768A5
Authority
CH
Switzerland
Prior art keywords
electrode
detector according
measurement electrode
measurement
chamber
Prior art date
Application number
CH815377A
Other languages
English (en)
French (fr)
Inventor
Dennis Roy O'connor
Original Assignee
Chloride Group 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 GB2766876A external-priority patent/GB1581236A/en
Application filed by Chloride Group Ltd filed Critical Chloride Group Ltd
Publication of CH616768A5 publication Critical patent/CH616768A5/fr

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)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Emergency Management (AREA)
  • Toxicology (AREA)
  • Business, Economics & Management (AREA)
  • Electrochemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
CH815377A 1976-07-02 1977-07-01 CH616768A5 (it)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2766876A GB1581236A (en) 1976-07-02 1976-07-02 Ionisation detector chamber
GB3882576 1976-09-20

Publications (1)

Publication Number Publication Date
CH616768A5 true CH616768A5 (it) 1980-04-15

Family

ID=26258938

Family Applications (1)

Application Number Title Priority Date Filing Date
CH815377A CH616768A5 (it) 1976-07-02 1977-07-01

Country Status (8)

Country Link
US (1) US4328424A (it)
JP (1) JPS5333600A (it)
CA (1) CA1091826A (it)
CH (1) CH616768A5 (it)
DE (1) DE2729599A1 (it)
FR (1) FR2393303A1 (it)
IE (1) IE45520B1 (it)
IL (1) IL52357A (it)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1603702A (en) * 1978-04-11 1981-11-25 Chloride Group Ltd Ionisation detector chamber
FR2438841A1 (fr) * 1978-10-13 1980-05-09 Commissariat Energie Atomique Capteur ionique pour detecteur d'incendie
JPS58189954U (ja) * 1982-06-14 1983-12-16 ニッタン株式会社 イオン化式煙感知器
JPS6044193U (ja) * 1983-09-05 1985-03-28 能美防災工業株式会社 イオン化式煙感知器
GB2182198B (en) * 1985-10-31 1991-05-15 Gent Ltd Ionisation detection chamber
JPH01102991U (it) * 1987-12-26 1989-07-12
US4937562A (en) * 1987-12-26 1990-06-26 Hochiki Corp. Moisture-proof ionization smoke detector
US5327119A (en) * 1989-12-22 1994-07-05 Hochiki Kabushiki Kaisha Ionizing smoke sensor
JPH03196292A (ja) * 1989-12-25 1991-08-27 Hochiki Corp イオン化式煙感知器
US7592922B2 (en) * 2007-01-18 2009-09-22 Michael E. La Vigne Smoke detector guard concentrator
CN106155861A (zh) * 2015-04-22 2016-11-23 鸿富锦精密工业(武汉)有限公司 电子设备报警电路

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2108895B1 (it) * 1970-10-16 1973-06-08 Gamma Electronic
US3935492A (en) * 1970-11-13 1976-01-27 Nittan Company, Ltd. Ionization smoke detector
DD106728A1 (it) * 1973-09-17 1974-06-20
US4044263A (en) * 1975-01-28 1977-08-23 Walter Kidde & Company, Inc. Ionization dual-zone static detector having single radioactive source

Also Published As

Publication number Publication date
IE45520L (en) 1978-01-02
JPS5333600A (en) 1978-03-29
IE45520B1 (en) 1982-09-22
IL52357A (en) 1979-11-30
FR2393303A1 (fr) 1978-12-29
CA1091826A (en) 1980-12-16
US4328424A (en) 1982-05-04
DE2729599A1 (de) 1978-02-02
IL52357A0 (en) 1977-08-31
FR2393303B1 (it) 1982-10-29

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Legal Events

Date Code Title Description
PFA Name/firm changed

Owner name: CHLORIDE GROUP PUBLIC LIMITED COMPANY

PUE Assignment

Owner name: GENT LIMITED

PL Patent ceased