NL272391A - - Google Patents

Info

Publication number
NL272391A
NL272391A NL272391DA NL272391A NL 272391 A NL272391 A NL 272391A NL 272391D A NL272391D A NL 272391DA NL 272391 A NL272391 A NL 272391A
Authority
NL
Netherlands
Application number
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 NL272391A publication Critical patent/NL272391A/xx

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
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
    • G01N27/16—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by burning or catalytic oxidation of surrounding material to be tested, e.g. of gas
    • 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
    • G08B17/117—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means by using a detection device for specific gases, e.g. combustion products, produced by the fire

Landscapes

  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Management (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Business, Economics & Management (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
NL272391D 1960-12-15 1961-12-11 NL272391A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB43186/60A GB1013682A (en) 1960-12-15 1960-12-15 Improvements in and relating to gas detecting apparatus

Publications (1)

Publication Number Publication Date
NL272391A true NL272391A (xx) 1964-08-25

Family

ID=10427683

Family Applications (1)

Application Number Title Priority Date Filing Date
NL272391D NL272391A (xx) 1960-12-15 1961-12-11

Country Status (7)

Country Link
US (1) US3233233A (xx)
JP (1) JPS4311760Y1 (xx)
BE (1) BE620286A (xx)
DE (1) DE1203022B (xx)
FR (1) FR1308844A (xx)
GB (1) GB1013682A (xx)
NL (1) NL272391A (xx)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT257213B (de) * 1963-09-12 1967-09-25 Bosch Gmbh Robert Meßkopf für elektrische Meßgeräte zur Ermittlung der unverbrannten Abgasanteile von Brennkraftmaschinen
DE1267884B (de) * 1963-09-12 1968-05-09 Bosch Gmbh Robert Elektrisches Messgeraet fuer die werkstattmaessige Einstellung des Kraftstoff-Luft-Gemisches einer Brennkraftmaschine auf Abgasminimum
GB1048426A (en) * 1963-10-22 1966-11-16 English Electric Co Ltd Improvements relating to potential difference detecting arrangements
JPS4724189U (xx) * 1971-04-06 1972-11-17
JPS4724190U (xx) * 1971-04-06 1972-11-17
JPS5014890U (xx) * 1973-06-07 1975-02-17
JPS5087558U (xx) * 1973-12-14 1975-07-25
JPS51120294A (en) * 1975-04-14 1976-10-21 Matsushita Electric Works Ltd Gas detector
JPS5642612Y2 (xx) * 1975-12-05 1981-10-05
JPS5295494U (xx) * 1976-01-14 1977-07-16
JPS52150390U (xx) * 1976-05-11 1977-11-15
JPS5414282U (xx) * 1977-06-30 1979-01-30

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE647724C (de) * 1937-07-10 Siemens & Halske Akt Ges Signaleinrichtung mit Ein- und Rueckstellung vom Sender aus
GB466391A (en) * 1935-09-03 1937-05-27 Hokushin Electric Works Improvements in electrical devices for detecting a gas in a gaseous mixture and for determining the amount thereof
US2152439A (en) * 1937-11-08 1939-03-28 Power Patents Co Method of and apparatus for analyzing gas
FR857503A (fr) * 1938-08-09 1940-09-17 Mine Safety Appliances Co Perfectionnements aux appareils pour l'essai des gaz au point de vue des constituants combustibles
US2273981A (en) * 1938-11-10 1942-02-24 Cities Service Oil Co Analysis of gases
US2349250A (en) * 1939-10-09 1944-05-23 Phillips Petroleum Co Gas detection
CH249161A (fr) * 1943-02-26 1947-06-15 Poole Ralph Appareil pour la détection de gaz qui forment avec l'air des mélanges explosifs.
GB589691A (en) * 1945-03-27 1947-06-26 Ralph Poole Improvements in or relating to apparatus for detecting the presence of explosive or other dangerous gases
US2535133A (en) * 1947-08-28 1950-12-26 Honeywell Regulator Co Limit control apparatus
DE898089C (de) * 1948-10-02 1953-11-26 Physikalisches Untersuchungsla Messvorrichtung zur qualitativen oder quantitativen Untersuchung stroemungsfaehiger Medien
US2759354A (en) * 1950-09-26 1956-08-21 Leeds & Northrup Co Isothermal systems for gas analysis
US2768069A (en) * 1952-06-05 1956-10-23 Factory Mutual Res Corp Combustible gas detector
FR1065924A (fr) * 1952-11-05 1954-05-31 Charbonnages De France Procédé et dispositif pour la détection de gaz combustibles
US2828450A (en) * 1955-05-09 1958-03-25 Honeywell Regulator Co Transistor controller
US2879142A (en) * 1955-09-21 1959-03-24 Mine Safety Appliances Co Combustible gas detector
US2945133A (en) * 1955-11-14 1960-07-12 Honeywell Regulator Co Transistor circuit
US2879663A (en) * 1955-11-25 1959-03-31 Cons Edison Co New York Inc Mobile gas detecting apparatus
DE1719993U (de) * 1955-11-30 1956-04-05 Charbonnages De France Quantitativ arbeitendes pruefgeraet fuer brennbare gase.
GB802307A (en) * 1956-12-19 1958-10-01 Philco Corp Improvements in or relating to electrical circuits utilizing transistors
US2960657A (en) * 1957-04-08 1960-11-15 Newcomb Electronics Corp Circuit monitor
GB835933A (en) * 1957-04-11 1960-05-25 Coal Industry Patents Ltd Improvements in and relating to apparatus for detecting carbon monoxide
US2917731A (en) * 1958-05-23 1959-12-15 George H Rodgers Multiple indicator system with resettable warning signal
US3041477A (en) * 1958-08-08 1962-06-26 Budts Lucien Multivibrator circuit arrangement

Also Published As

Publication number Publication date
DE1203022B (de) 1965-10-14
BE620286A (xx) 1962-08-14
JPS4311760Y1 (xx) 1968-05-21
FR1308844A (fr) 1962-11-09
GB1013682A (en) 1965-12-15
US3233233A (en) 1966-02-01

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