GB1598973A - Device for detecting ionizable compounds - Google Patents

Device for detecting ionizable compounds Download PDF

Info

Publication number
GB1598973A
GB1598973A GB13826/78A GB1382678A GB1598973A GB 1598973 A GB1598973 A GB 1598973A GB 13826/78 A GB13826/78 A GB 13826/78A GB 1382678 A GB1382678 A GB 1382678A GB 1598973 A GB1598973 A GB 1598973A
Authority
GB
United Kingdom
Prior art keywords
chambers
electrodes
chamber
transistor
analysis chamber
Prior art date
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
GB13826/78A
Other languages
English (en)
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.)
GAMMA ELECTRONIC
Original Assignee
GAMMA ELECTRONIC
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 GAMMA ELECTRONIC filed Critical GAMMA ELECTRONIC
Publication of GB1598973A publication Critical patent/GB1598973A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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 SYSTEMS, e.g. PERSONAL 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)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
GB13826/78A 1977-04-08 1978-04-07 Device for detecting ionizable compounds Expired GB1598973A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7710719A FR2386874A1 (fr) 1977-04-08 1977-04-08 Detecteur de fumees a ionisation associe a un circuit electronique de mesure velocimetrique

Publications (1)

Publication Number Publication Date
GB1598973A true GB1598973A (en) 1981-09-30

Family

ID=9189231

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13826/78A Expired GB1598973A (en) 1977-04-08 1978-04-07 Device for detecting ionizable compounds

Country Status (7)

Country Link
US (1) US4238677A (https=)
JP (1) JPS541092A (https=)
BE (1) BE884312Q (https=)
CH (1) CH625356A5 (https=)
ES (1) ES468622A1 (https=)
FR (1) FR2386874A1 (https=)
GB (1) GB1598973A (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117560A (en) * 1982-03-09 1983-10-12 Emile Hugon Capacitive smoke detector

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4488044A (en) * 1981-11-20 1984-12-11 Pittway Corporation Ionization chamber for smoke detector and the like
US4617560A (en) * 1984-12-31 1986-10-14 Gutmann Robin P E Smoke or fire detector
US5327119A (en) * 1989-12-22 1994-07-05 Hochiki Kabushiki Kaisha Ionizing smoke sensor
DE10326047A1 (de) * 2003-06-10 2004-12-30 Degussa Ag Verfahren zur Herstellung alpha-substituierter Carbonsäuren aus der Reihe der alpha-Hydroxycarbonsäuren und N-substituierten-alpha-Aminocarbonsäuren

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2029485B2 (de) * 1969-06-21 1971-11-25 Nittan Co. Ltd., Tokio Ionisations rauchfuehler
US3665441A (en) * 1970-09-14 1972-05-23 Gen Signal Corp Method and apparatus for detecting aerosols
CH570016A5 (https=) * 1973-03-30 1975-11-28 Cerberus Ag
US3906474A (en) * 1973-05-07 1975-09-16 Fire Alert Company Combustion products alarm
US3909815A (en) * 1973-06-01 1975-09-30 Gamma Electronic Detector for fumes and combustion gases
US3812362A (en) * 1973-07-02 1974-05-21 Honeywell Inc Smoke detector circuit
US4020415A (en) * 1974-12-30 1977-04-26 Unitec, Inc. Combustion product indicator
JPS51100085U (https=) * 1975-02-10 1976-08-11
US4097851A (en) * 1976-07-19 1978-06-27 Pittway Corporation Sensitivity compensated fire detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2117560A (en) * 1982-03-09 1983-10-12 Emile Hugon Capacitive smoke detector

Also Published As

Publication number Publication date
BE884312Q (fr) 1980-11-03
CH625356A5 (https=) 1981-09-15
JPS541092A (en) 1979-01-06
ES468622A1 (es) 1979-04-01
FR2386874B1 (https=) 1980-01-18
FR2386874A1 (fr) 1978-11-03
US4238677A (en) 1980-12-09

Similar Documents

Publication Publication Date Title
US4225860A (en) Sensitivity controlled dual input fire detector
US3028490A (en) Apparatus responsive to the composition of a gaseous medium
US3500368A (en) Automatic ionic fire alarm system
US4262203A (en) Alpha particle monitor
US4405919A (en) Method of fire detection and fire detection installation
GB1430891A (en) Ionization fire sensors
US3872449A (en) Fire detector and method employing assymetrical integrator
CA2056768A1 (en) Fire detector system and method
US3964036A (en) Ionization smoke detector co-used to issue fire alarm and detect ambient atmosphere
US4021671A (en) Ionization detector
US3909815A (en) Detector for fumes and combustion gases
US3798625A (en) Rate-of-change combustion and combination detection apparatus
US4150373A (en) Ionization particle detector
US3946374A (en) Rate-of-change combustion and contamination detection device
GB1598973A (en) Device for detecting ionizable compounds
US4336455A (en) Smoke detectors
US4456907A (en) Ionization type smoke detector with test circuit
US3795904A (en) Fire alarm with ionization chamber
FR2473201A1 (fr) Detecteur de fumees capacitif a faible source d'ionisation
US3665441A (en) Method and apparatus for detecting aerosols
EP0384209A3 (de) Verfahren zum Betrieb eines Ionisationsrauchmelders und Ionisationsrauchmelder
US4594512A (en) Ionization type smoke detector
US4423411A (en) Ionization type fire detector
CA1148279A (en) Ionization smoke detector with increased operational reliability
US3932851A (en) Aerosol detector

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee