BE832768A - IMPROVEMENTS RELATED TO FIRE DETECTORS - Google Patents

IMPROVEMENTS RELATED TO FIRE DETECTORS

Info

Publication number
BE832768A
BE832768A BE159485A BE159485A BE832768A BE 832768 A BE832768 A BE 832768A BE 159485 A BE159485 A BE 159485A BE 159485 A BE159485 A BE 159485A BE 832768 A BE832768 A BE 832768A
Authority
BE
Belgium
Prior art keywords
fire detectors
improvements related
detectors
fire
Prior art date
Application number
BE159485A
Other languages
French (fr)
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 filed Critical
Publication of BE832768A publication Critical patent/BE832768A/en

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)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Emergency Management (AREA)
  • Immunology (AREA)
  • Electrochemistry (AREA)
  • Biochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Toxicology (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Control Of Combustion (AREA)
  • Fire Alarms (AREA)
  • Sampling And Sample Adjustment (AREA)
BE159485A 1974-08-26 1975-08-26 IMPROVEMENTS RELATED TO FIRE DETECTORS BE832768A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA00745453A ZA745453B (en) 1974-08-26 1974-08-26 Improvements in or relating to fire detectors

Publications (1)

Publication Number Publication Date
BE832768A true BE832768A (en) 1975-12-16

Family

ID=25568066

Family Applications (1)

Application Number Title Priority Date Filing Date
BE159485A BE832768A (en) 1974-08-26 1975-08-26 IMPROVEMENTS RELATED TO FIRE DETECTORS

Country Status (21)

Country Link
JP (1) JPS5635236B2 (en)
AU (1) AU501762B2 (en)
BE (1) BE832768A (en)
BR (1) BR7505431A (en)
CA (1) CA1042088A (en)
CH (1) CH600455A5 (en)
DE (1) DE2537598C3 (en)
DK (1) DK136793B (en)
FR (1) FR2283492A1 (en)
GB (1) GB1492193A (en)
IE (1) IE41452B1 (en)
IN (1) IN143233B (en)
IT (1) IT1042015B (en)
LU (1) LU73252A1 (en)
NL (1) NL167785C (en)
NO (1) NO138307C (en)
PH (1) PH11514A (en)
SE (1) SE439209B (en)
SU (1) SU703038A3 (en)
YU (1) YU37410B (en)
ZA (1) ZA745453B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2711457C2 (en) * 1977-03-16 1985-06-27 Siemens AG, 1000 Berlin und 8000 München Ionization fire detector
CH681932A5 (en) * 1990-12-04 1993-06-15 Cerberus Ag
CH682423A5 (en) * 1991-03-13 1993-09-15 Asea Brown Boveri Method and apparatus for measuring the concentration of a gas contained in particles.
DE102004020489B4 (en) * 2004-04-26 2007-06-28 Minimax Gmbh & Co. Kg Fire detector for use in outdoor atmosphere
CN110185461A (en) * 2019-06-28 2019-08-30 中交路桥建设有限公司 The shield machine of real-time detection tunnel geology condition

Family Cites Families (3)

* 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
DE2204930C3 (en) * 1971-02-08 1974-06-20 Veb Rft Messelektronik Otto Schoen, X 8016 Dresden Ionization fire alarms
JPS485979U (en) * 1971-06-04 1973-01-23

Also Published As

Publication number Publication date
FR2283492B1 (en) 1979-05-04
IE41452L (en) 1976-02-26
FR2283492A1 (en) 1976-03-26
DE2537598B2 (en) 1980-11-06
LU73252A1 (en) 1976-05-31
SE439209B (en) 1985-06-03
PH11514A (en) 1978-02-01
IT1042015B (en) 1980-01-30
NO752918L (en) 1976-02-27
DE2537598C3 (en) 1984-12-20
YU37410B (en) 1984-08-31
SE7509478L (en) 1976-02-27
NO138307B (en) 1978-05-02
ZA745453B (en) 1976-04-28
JPS5635236B2 (en) 1981-08-15
CA1042088A (en) 1978-11-07
AU8412175A (en) 1977-02-24
DK384275A (en) 1976-02-27
GB1492193A (en) 1977-11-16
JPS5149784A (en) 1976-04-30
NO138307C (en) 1978-08-16
NL7509918A (en) 1976-03-01
DE2537598A1 (en) 1976-03-11
CH600455A5 (en) 1978-06-15
NL167785B (en) 1981-08-17
IN143233B (en) 1977-10-22
DK136793C (en) 1978-04-24
SU703038A3 (en) 1979-12-05
YU216775A (en) 1983-04-27
IE41452B1 (en) 1980-01-02
DK136793B (en) 1977-11-21
AU501762B2 (en) 1979-06-28
NL167785C (en) 1982-01-18
BR7505431A (en) 1976-08-03

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: ANGLO AMERICAN CORP. OF SOUTH AFRICA LTD

Effective date: 19900831