DK136793B - Fire detector. - Google Patents

Fire detector.

Info

Publication number
DK136793B
DK136793B DK384275AA DK384275A DK136793B DK 136793 B DK136793 B DK 136793B DK 384275A A DK384275A A DK 384275AA DK 384275 A DK384275 A DK 384275A DK 136793 B DK136793 B DK 136793B
Authority
DK
Denmark
Prior art keywords
fire detector
fire
detector
Prior art date
Application number
DK384275AA
Other languages
Danish (da)
Other versions
DK384275A (en
DK136793C (en
Inventor
Timothy Newington
Nicholaas Tjaart Van Der Walt
Original Assignee
Anglo Amer Corp South Africa
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 Anglo Amer Corp South Africa filed Critical Anglo Amer Corp South Africa
Publication of DK384275A publication Critical patent/DK384275A/da
Publication of DK136793B publication Critical patent/DK136793B/en
Application granted granted Critical
Publication of DK136793C publication Critical patent/DK136793C/da

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)
  • Sampling And Sample Adjustment (AREA)
  • Fire Alarms (AREA)
DK384275AA 1974-08-26 1975-08-26 Fire detector. DK136793B (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 (3)

Publication Number Publication Date
DK384275A DK384275A (en) 1976-02-27
DK136793B true DK136793B (en) 1977-11-21
DK136793C DK136793C (en) 1978-04-24

Family

ID=25568066

Family Applications (1)

Application Number Title Priority Date Filing Date
DK384275AA DK136793B (en) 1974-08-26 1975-08-26 Fire detector.

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
DK384275A (en) 1976-02-27
NL167785C (en) 1982-01-18
PH11514A (en) 1978-02-01
SE7509478L (en) 1976-02-27
IN143233B (en) 1977-10-22
AU8412175A (en) 1977-02-24
NL7509918A (en) 1976-03-01
DE2537598A1 (en) 1976-03-11
IE41452B1 (en) 1980-01-02
JPS5149784A (en) 1976-04-30
CA1042088A (en) 1978-11-07
NL167785B (en) 1981-08-17
NO752918L (en) 1976-02-27
BR7505431A (en) 1976-08-03
DE2537598B2 (en) 1980-11-06
DK136793C (en) 1978-04-24
GB1492193A (en) 1977-11-16
FR2283492A1 (en) 1976-03-26
NO138307C (en) 1978-08-16
CH600455A5 (en) 1978-06-15
BE832768A (en) 1975-12-16
LU73252A1 (en) 1976-05-31
SE439209B (en) 1985-06-03
AU501762B2 (en) 1979-06-28
DE2537598C3 (en) 1984-12-20
YU216775A (en) 1983-04-27
NO138307B (en) 1978-05-02
FR2283492B1 (en) 1979-05-04
YU37410B (en) 1984-08-31
ZA745453B (en) 1976-04-28
SU703038A3 (en) 1979-12-05
IT1042015B (en) 1980-01-30
JPS5635236B2 (en) 1981-08-15
IE41452L (en) 1976-02-26

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