FR2106112A5 - Gas detector - of changing electrical conductivity as function of gas concn - Google Patents

Gas detector - of changing electrical conductivity as function of gas concn

Info

Publication number
FR2106112A5
FR2106112A5 FR7131064A FR7131064A FR2106112A5 FR 2106112 A5 FR2106112 A5 FR 2106112A5 FR 7131064 A FR7131064 A FR 7131064A FR 7131064 A FR7131064 A FR 7131064A FR 2106112 A5 FR2106112 A5 FR 2106112A5
Authority
FR
France
Prior art keywords
gas
function
electrical conductivity
changing electrical
concn
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
FR7131064A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Application granted granted Critical
Publication of FR2106112A5 publication Critical patent/FR2106112A5/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/06—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances
    • H01B1/08—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of other non-metallic substances oxides
    • 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
    • G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)

Abstract

Detector consists of a semiconductor element pref. ZnO crystal with two electrodes. The element consists of a semiconductor oxide with a first metal pref. Pt and a second metal pref Ga in its crystal lattice which activates the structure to produce ions at a higher rate when a gas is present.
FR7131064A 1970-08-26 1971-08-26 Gas detector - of changing electrical conductivity as function of gas concn Expired FR2106112A5 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB4106170 1970-08-26
GB4106270 1970-08-26
GB1100271 1971-04-23

Publications (1)

Publication Number Publication Date
FR2106112A5 true FR2106112A5 (en) 1972-04-28

Family

ID=27256610

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7131064A Expired FR2106112A5 (en) 1970-08-26 1971-08-26 Gas detector - of changing electrical conductivity as function of gas concn

Country Status (3)

Country Link
BE (1) BE771767A (en)
DE (1) DE2142796C2 (en)
FR (1) FR2106112A5 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2437352A1 (en) * 1973-08-03 1975-02-13 Nohmi Bosai Kogyo Co Ltd DEVICE FOR DETECTION OF CARBON MONOXYDE
EP0014091A1 (en) * 1979-01-22 1980-08-06 Ford Motor Company Limited Ceramic sensor element
EP0022369A1 (en) * 1979-07-06 1981-01-14 Matsushita Electric Industrial Co., Ltd. Combustible gas detecting elements
FR2468119A1 (en) * 1979-10-20 1981-04-30 Draegerwerk Ag GAS DETECTION ELEMENT FOR DETECTING THE PRESENCE OF HYDROGEN SULFIDE AND PROCESS FOR MAKING SAME
EP0059557A2 (en) * 1981-02-27 1982-09-08 Capital Controls Company, Inc. Method and apparatus for measuring the concentration of gases
FR2579754A1 (en) * 1985-04-02 1986-10-03 Centre Nat Rech Scient NITRIDES AND OXYNITRIDES USEFUL AS SELECTIVE DETECTORS OF REDUCING GASES IN THE ATMOSPHERE, AND DETECTION DEVICE CONTAINING SAME
CN109813760A (en) * 2019-02-28 2019-05-28 江苏理工学院 A kind of zinc oxide nanowire gas sensor and preparation method thereof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4080564A (en) * 1975-10-02 1978-03-21 Matsushita Electric Industrial Co., Ltd. Humidity sensitive resistor device
DE2648373C2 (en) * 1976-10-26 1986-01-02 Robert Bosch Gmbh, 7000 Stuttgart Semiconductors for sensors for determining the content of oxygen and / or oxidizable components in exhaust gases
KR870001258B1 (en) * 1983-06-27 1987-06-29 가부시기가이샤 도시바 Gas sensor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3051895A (en) * 1955-04-21 1962-08-28 Robert L Carson Gas detection
US3479257A (en) * 1966-11-25 1969-11-18 Gen Electric Methods and apparatus for measuring the content of hydrogen or reducing gases in an atmosphere
US3558280A (en) * 1968-11-05 1971-01-26 Westinghouse Electric Corp Solid state oxygen gauge
GB1257155A (en) * 1969-02-06 1971-12-15

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2437352A1 (en) * 1973-08-03 1975-02-13 Nohmi Bosai Kogyo Co Ltd DEVICE FOR DETECTION OF CARBON MONOXYDE
EP0014091A1 (en) * 1979-01-22 1980-08-06 Ford Motor Company Limited Ceramic sensor element
EP0022369A1 (en) * 1979-07-06 1981-01-14 Matsushita Electric Industrial Co., Ltd. Combustible gas detecting elements
FR2468119A1 (en) * 1979-10-20 1981-04-30 Draegerwerk Ag GAS DETECTION ELEMENT FOR DETECTING THE PRESENCE OF HYDROGEN SULFIDE AND PROCESS FOR MAKING SAME
EP0059557A2 (en) * 1981-02-27 1982-09-08 Capital Controls Company, Inc. Method and apparatus for measuring the concentration of gases
EP0059557A3 (en) * 1981-02-27 1983-11-23 Dart Industries Inc. Method and apparatus for measuring the concentration of gases
FR2579754A1 (en) * 1985-04-02 1986-10-03 Centre Nat Rech Scient NITRIDES AND OXYNITRIDES USEFUL AS SELECTIVE DETECTORS OF REDUCING GASES IN THE ATMOSPHERE, AND DETECTION DEVICE CONTAINING SAME
EP0201375A1 (en) * 1985-04-02 1986-11-12 Etablissement Public dit: CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS) Oxynitrides useful as detectors selective to reducing gases in the atmosphere, and detection device containing them
CN109813760A (en) * 2019-02-28 2019-05-28 江苏理工学院 A kind of zinc oxide nanowire gas sensor and preparation method thereof

Also Published As

Publication number Publication date
DE2142796C2 (en) 1984-10-25
DE2142796A1 (en) 1972-03-02
BE771767A (en) 1971-12-31

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Legal Events

Date Code Title Description
ST Notification of lapse