DE20004229U1 - Oxygen gas sensor - Google Patents

Oxygen gas sensor

Info

Publication number
DE20004229U1
DE20004229U1 DE20004229U DE20004229U DE20004229U1 DE 20004229 U1 DE20004229 U1 DE 20004229U1 DE 20004229 U DE20004229 U DE 20004229U DE 20004229 U DE20004229 U DE 20004229U DE 20004229 U1 DE20004229 U1 DE 20004229U1
Authority
DE
Germany
Prior art keywords
gas sensor
oxygen gas
sensor according
layer material
layer
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 - Lifetime
Application number
DE20004229U
Other languages
German (de)
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.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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 Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Priority to DE20004229U priority Critical patent/DE20004229U1/en
Publication of DE20004229U1 publication Critical patent/DE20004229U1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
    • G01N27/403—Cells and electrode assemblies
    • G01N27/406—Cells and probes with solid electrolytes
    • G01N27/407—Cells and probes with solid electrolytes for investigating or analysing gases
    • G01N27/4071—Cells and probes with solid electrolytes for investigating or analysing gases using sensor elements of laminated structure

Description

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims (11)

1. Sauerstoffgassensor mit einem Schichtmaterial, das bei Einlagerung von Elektronen sowie positiven Ionen seine Farbe und/oder seine elektrische Leitfähigkeit und/oder sein elektrochemisches Potential ändert und einer auf dem Schichtmaterial abgeschiedenen Katalysatorschicht, die wenigstens einseitig ein Meßvolumen abschließt, in das ein zu vermessender Gasstrom einbringbar ist, dadurch gekennzeichnet, dass Mittei vorgesehen sind, die das Schichtmaterial reduzieren.1.Oxygen gas sensor with a layer material which changes its color and / or its electrical conductivity and / or its electrochemical potential when electrons and positive ions are embedded, and a catalyst layer deposited on the layer material, which closes a measuring volume on at least one side, into which one to be measured Gas flow can be introduced, characterized in that means are provided which reduce the layer material. 2. Sauerstoffgassensor nach Anspruch 1, dadurch gekennzeichnet, dass das Mittel ein Reservoirvolumen ist, in dem ein, das Schichtmaterial reduzierender Stoff vorgesehen ist, und dass wenigstens eine Zuleitung zwischen dem Reservoirvolumen und dem Meßvolumen derart vorgesehen ist, dass der das Schichtmaterial reduzierende Stoff gezielt in das Meßvolumen einbringbar ist.2. Oxygen gas sensor according to claim 1, characterized in that the agent is a reservoir volume in which one that Layer material reducing material is provided, and that at least one Supply line between the reservoir volume and the measurement volume is provided in this way is that the substance reducing the layer material is targeted into the measuring volume can be introduced. 3. Sauerstoffgassensor nach Anspruch 2, dadurch gekennzeichnet, dass eine Regeleinheit vorgesehen ist, durch die der Stoffeintrag durch die Zuleitung in das Messvolumen zeitlich und mengenmäßig regelbar ist.3. Oxygen gas sensor according to claim 2, characterized in that a control unit is provided by which the Substance entry in the measuring volume in terms of time and quantity is adjustable. 4. Sauerstoffgassensor nach Anspruch 3, dadurch gekennzeichnet, dass die Regeleinheit ein regelbares Ventil ist.4. Oxygen gas sensor according to claim 3, characterized in that the control unit is a controllable valve. 5. Sauerstoffgassensor nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass der das Schichtmaterial reduzierende Stoff H2-Gas ist. 5. Oxygen gas sensor according to one of claims 2 to 4, characterized in that the layer material reducing material is H 2 gas. 6. Sauerstoffgassensor nach Anspruch 1, dadurch gekennzeichnet, dass das Mittel eine Elektrodenanordnung ist, durch die eine elektrische Spannung an das Schichtmaterial anlegbar ist, durch die das Schichtmaterial reduzierbar ist.6. Oxygen gas sensor according to claim 1, characterized in that the means is an electrode arrangement through which an electrical voltage can be applied to the layer material, through which the Layer material is reducible. 7. Sauerstoffgassensor nach Anspruch 6, dadurch gekennzeichnet, dass die Elektrodenanordnung zum einen eine elektrisch leitende Schicht aufweist, die an das Schichtmaterial einseitig angebracht ist, und zum anderen eine Verbindung zur Katalysatorschicht über eine gut Protonen- und schlecht Elektronen-leitende Schicht aufweist, die der elektrischen Schicht gegenüberliegend an der dem Schichtmaterial angebracht ist.7. Oxygen gas sensor according to claim 6, characterized in that the electrode arrangement is electrically has conductive layer which is attached to the layer material on one side, and on the other hand a connection to the catalyst layer via a good proton and poorly electron-conducting layer that of the electrical layer opposite to which the layer material is attached. 8. Sauerstoffgassensor nach Anspruch 6 oder 7, dadurch gekennzeichnet, dass ein Glassubstrat vorgesehen ist, auf dem die elektrisch leitende Schicht aufgebracht ist, auf der das Schichtmaterial vorgesehen ist, auf dem die Katalysatorschicht abgeschieden ist, die zusammen mit einem weiteren Glassubstrat das Meßvolumen in Form eines Kanals umschließt.8. Oxygen gas sensor according to claim 6 or 7, characterized in that a glass substrate is provided on which the electrically conductive layer is applied, on which the layer material is provided on which the catalyst layer is deposited, which together with a another glass substrate encloses the measuring volume in the form of a channel. 9. Sauerstoffgassensor nach Anspruch 8, dadurch gekennzeichnet, dass das Glassubstrat und die elektrisch leitende Schicht optisch transparent sind.9. Oxygen gas sensor according to claim 8, characterized in that the glass substrate and the electrically conductive layer are optically transparent. 10. Sauerstoffgassensor nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das Schichtmaterial aus Übergangsmetalloxiden, vorzugsweise WO3, oder aus substöchiometrischen Metalloxiden, vorzugsweise WO2,5, und die Katalysatorschicht aus Platin bestehen.10. Oxygen gas sensor according to one of claims 1 to 9, characterized in that the layer material consists of transition metal oxides, preferably WO 3 , or substoichiometric metal oxides, preferably WO 2.5 , and the catalyst layer consists of platinum. 11. Sauerstoffgassensor nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass der Sauerstoffsensor auch zur Messung von anderen oxidierenden Gase, insbesondere F2 oder Cl2 einsetzbar ist.11. Oxygen gas sensor according to one of claims 1 to 10, characterized in that the oxygen sensor can also be used for measuring other oxidizing gases, in particular F 2 or Cl 2 .
DE20004229U 2000-03-07 2000-03-07 Oxygen gas sensor Expired - Lifetime DE20004229U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE20004229U DE20004229U1 (en) 2000-03-07 2000-03-07 Oxygen gas sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE20004229U DE20004229U1 (en) 2000-03-07 2000-03-07 Oxygen gas sensor

Publications (1)

Publication Number Publication Date
DE20004229U1 true DE20004229U1 (en) 2000-05-04

Family

ID=7938416

Family Applications (1)

Application Number Title Priority Date Filing Date
DE20004229U Expired - Lifetime DE20004229U1 (en) 2000-03-07 2000-03-07 Oxygen gas sensor

Country Status (1)

Country Link
DE (1) DE20004229U1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018200615A1 (en) * 2018-01-16 2019-07-18 Osram Gmbh Method for detecting a gas and gas detection system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018200615A1 (en) * 2018-01-16 2019-07-18 Osram Gmbh Method for detecting a gas and gas detection system

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