HK20378A - Ionisation fire alarm - Google Patents

Ionisation fire alarm

Info

Publication number
HK20378A
HK20378A HK203/78A HK20378A HK20378A HK 20378 A HK20378 A HK 20378A HK 203/78 A HK203/78 A HK 203/78A HK 20378 A HK20378 A HK 20378A HK 20378 A HK20378 A HK 20378A
Authority
HK
Hong Kong
Prior art keywords
fire alarm
ionisation
ionisation fire
alarm
fire
Prior art date
Application number
HK203/78A
Inventor
P R Muller
A Scheidweiler
Original Assignee
Cerberus Ag
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 Cerberus Ag filed Critical Cerberus Ag
Publication of HK20378A publication Critical patent/HK20378A/en

Links

Classifications

    • 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
    • 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
    • G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (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)
HK203/78A 1968-06-18 1978-04-13 Ionisation fire alarm HK20378A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH903568A CH475614A (en) 1968-06-18 1968-06-18 Ionization fire alarms

Publications (1)

Publication Number Publication Date
HK20378A true HK20378A (en) 1978-04-20

Family

ID=4347596

Family Applications (1)

Application Number Title Priority Date Filing Date
HK203/78A HK20378A (en) 1968-06-18 1978-04-13 Ionisation fire alarm

Country Status (11)

Country Link
US (1) US3731093A (en)
BE (1) BE734060A (en)
CH (1) CH475614A (en)
DE (1) DE1928874B2 (en)
DK (1) DK125938B (en)
FR (1) FR2011126A1 (en)
GB (1) GB1217792A (en)
HK (1) HK20378A (en)
IL (1) IL32330A (en)
NL (1) NL164407C (en)
SE (1) SE340971B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH551057A (en) * 1973-04-17 1974-06-28 Cerberus Ag IONIZATION ALARM.
US3903419A (en) * 1973-04-20 1975-09-02 Fire Alert Company Combustion products detector assembly and method of operation
FR2268263B1 (en) * 1974-04-18 1979-03-30 Hochiki Co
US3959788A (en) * 1974-05-10 1976-05-25 General Signal Corporation Ionization-type fire detector
US4044263A (en) * 1975-01-28 1977-08-23 Walter Kidde & Company, Inc. Ionization dual-zone static detector having single radioactive source
US4439683A (en) * 1981-02-11 1984-03-27 General Signal Corporation Ionization smoke detector
US4469953A (en) * 1982-02-02 1984-09-04 Nittan Company, Limited Combination ionization and photoelectric smoke detector
US4529976A (en) * 1982-10-29 1985-07-16 Frederick M. Jameson Smoke detector with masking shield
FR2594953B1 (en) * 1986-02-25 1989-05-05 Lewiner Jacques SMOKE DETECTOR WITH IONIZATION CHAMBER
JPH01102991U (en) * 1987-12-26 1989-07-12
US5485144A (en) * 1993-05-07 1996-01-16 Pittway Corporation Compensated ionization sensor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH416388A (en) * 1962-11-19 1966-06-30 Cerberus Ag Ionization fire alarm
US3514603A (en) * 1966-12-22 1970-05-26 Johnson Service Co Ionization chamber detection apparatus having a low voltage source means
US3560737A (en) * 1967-08-02 1971-02-02 Honeywell Inc Combustion products detector using a radioactive source and detector

Also Published As

Publication number Publication date
FR2011126A1 (en) 1970-02-27
CH475614A (en) 1969-07-15
DE1928874A1 (en) 1970-01-02
DE1928874B2 (en) 1978-03-09
IL32330A0 (en) 1969-08-27
BE734060A (en) 1969-11-17
IL32330A (en) 1972-04-27
NL164407C (en) 1980-12-15
NL6909253A (en) 1969-12-22
NL164407B (en) 1980-07-15
DK125938B (en) 1973-05-21
US3731093A (en) 1973-05-01
SE340971B (en) 1971-12-06
GB1217792A (en) 1970-12-31

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