IE41452B1 - Improvements in or relating to fire detectors - Google Patents

Improvements in or relating to fire detectors

Info

Publication number
IE41452B1
IE41452B1 IE1827/75A IE182775A IE41452B1 IE 41452 B1 IE41452 B1 IE 41452B1 IE 1827/75 A IE1827/75 A IE 1827/75A IE 182775 A IE182775 A IE 182775A IE 41452 B1 IE41452 B1 IE 41452B1
Authority
IE
Ireland
Prior art keywords
support
housing
electrode
support member
ionization chamber
Prior art date
Application number
IE1827/75A
Other languages
English (en)
Other versions
IE41452L (en
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 IE41452L publication Critical patent/IE41452L/xx
Publication of IE41452B1 publication Critical patent/IE41452B1/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)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Business, Economics & Management (AREA)
  • Biochemistry (AREA)
  • Emergency Management (AREA)
  • Immunology (AREA)
  • Pathology (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)
IE1827/75A 1974-08-26 1975-08-19 Improvements in or relating to fire detectors IE41452B1 (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 (2)

Publication Number Publication Date
IE41452L IE41452L (en) 1976-02-26
IE41452B1 true IE41452B1 (en) 1980-01-02

Family

ID=25568066

Family Applications (1)

Application Number Title Priority Date Filing Date
IE1827/75A IE41452B1 (en) 1974-08-26 1975-08-19 Improvements in or relating to fire detectors

Country Status (21)

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

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2711457C2 (de) * 1977-03-16 1985-06-27 Siemens AG, 1000 Berlin und 8000 München Ionisationsbrandmelder
CH681932A5 (nl) * 1990-12-04 1993-06-15 Cerberus Ag
CH682423A5 (de) * 1991-03-13 1993-09-15 Asea Brown Boveri Verfahren und Vorrichtung zur Messung der Konzentration von in einem Gas befindlichen Partikeln.
DE102004020489B4 (de) * 2004-04-26 2007-06-28 Minimax Gmbh & Co. Kg Brandmelder für Einsatz in Außenatmosphäre
CN110185461A (zh) * 2019-06-28 2019-08-30 中交路桥建设有限公司 实时探测隧道地质条件的盾构机

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 (de) * 1971-02-08 1974-06-20 Veb Rft Messelektronik Otto Schoen, X 8016 Dresden Ionisationsfeuermelder
JPS485979U (nl) * 1971-06-04 1973-01-23

Also Published As

Publication number Publication date
NL167785B (nl) 1981-08-17
NL7509918A (nl) 1976-03-01
JPS5635236B2 (nl) 1981-08-15
SE7509478L (sv) 1976-02-27
PH11514A (en) 1978-02-01
FR2283492B1 (nl) 1979-05-04
DE2537598A1 (de) 1976-03-11
NO138307C (no) 1978-08-16
NL167785C (nl) 1982-01-18
YU216775A (en) 1983-04-27
AU8412175A (en) 1977-02-24
IT1042015B (it) 1980-01-30
JPS5149784A (nl) 1976-04-30
CA1042088A (en) 1978-11-07
LU73252A1 (nl) 1976-05-31
SE439209B (sv) 1985-06-03
DK136793B (da) 1977-11-21
NO752918L (nl) 1976-02-27
SU703038A3 (ru) 1979-12-05
ZA745453B (en) 1976-04-28
IN143233B (nl) 1977-10-22
BE832768A (fr) 1975-12-16
GB1492193A (en) 1977-11-16
DK384275A (nl) 1976-02-27
YU37410B (en) 1984-08-31
DE2537598C3 (de) 1984-12-20
IE41452L (en) 1976-02-26
FR2283492A1 (fr) 1976-03-26
AU501762B2 (en) 1979-06-28
BR7505431A (pt) 1976-08-03
CH600455A5 (nl) 1978-06-15
DK136793C (nl) 1978-04-24
NO138307B (no) 1978-05-02
DE2537598B2 (de) 1980-11-06

Similar Documents

Publication Publication Date Title
US3028490A (en) Apparatus responsive to the composition of a gaseous medium
US2702898A (en) Gas-responsive control apparatus
JPS54104584A (en) Gas insulated electric device and method of inspecting partial discharge thereof
GB1250297A (nl)
US3448261A (en) Signal detection and measuring circuit
US2994768A (en) Method and system for the electric determination of aerosols in a gas
GB842897A (en) Improvements relating to electrical vapour detectors
IE41452B1 (en) Improvements in or relating to fire detectors
US4121105A (en) Ionization detector
US4786811A (en) Ionization type-smoke detector
US3909815A (en) Detector for fumes and combustion gases
US3961195A (en) Fire detector having means for heating the support member of an electrode to prevent formation of moisture thereon
US2963600A (en) Device for the determination of changes in the composition of gas
FR2393303A1 (fr) Detecteur a chambre d'ionisation
US3271756A (en) Method and apparatus for detecting a hazardous condition
US4044263A (en) Ionization dual-zone static detector having single radioactive source
US4423411A (en) Ionization type fire detector
GB1329475A (en) Ionization fire alarm
GB1379204A (en) Flamedetection methods and apparatus
US3078450A (en) Pressure compensated ionization chamber fire detector system
US3676681A (en) Ionization smoke detector
US2978581A (en) Radiant energy detection device
US3455657A (en) Flame ionization detector
US2981938A (en) Combined overheat and flame detector system
JPS6242320B2 (nl)