FR2438271A1 - Dispositif de detection de gaz - Google Patents

Dispositif de detection de gaz

Info

Publication number
FR2438271A1
FR2438271A1 FR7828711A FR7828711A FR2438271A1 FR 2438271 A1 FR2438271 A1 FR 2438271A1 FR 7828711 A FR7828711 A FR 7828711A FR 7828711 A FR7828711 A FR 7828711A FR 2438271 A1 FR2438271 A1 FR 2438271A1
Authority
FR
France
Prior art keywords
nickel oxide
gas
conductance
probes
probe
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.)
Granted
Application number
FR7828711A
Other languages
English (en)
Other versions
FR2438271B1 (fr
Inventor
Rene Lalauze
Jean Meunier
Jean Michel Reymond
Michel Soustelle
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.)
Bpifrance Financement SA
Original Assignee
Agence National de Valorisation de la Recherche ANVAR
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 Agence National de Valorisation de la Recherche ANVAR filed Critical Agence National de Valorisation de la Recherche ANVAR
Priority to FR7828711A priority Critical patent/FR2438271A1/fr
Publication of FR2438271A1 publication Critical patent/FR2438271A1/fr
Application granted granted Critical
Publication of FR2438271B1 publication Critical patent/FR2438271B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
    • 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

Abstract

DETECTEUR DE GAZ FORME DE DEUX CAPTEURS SITUES DANS LA MEME ENCEINTE OU PASSE LE GAZ A DETECTER DANS LEQUEL: -LE PREMIER CAPTEUR EST FORME PAR UN OXYDE METALLIQUE SEMI-CONDUCTEUR DONT LA CONDUCTANCE VARIE DANS UN SENS LORSQU'IL EST MIS EN PRESENCE DU GAZ A DETECTER; -LE DEUXIEME CAPTEUR ETANT FORME PAR UN OXYDE METALLIQUE SEMI-CONDUCTEUR DONT ON A FAIT VARIER LES PROPRIETES PHYSICO-CHIMIQUES DE MANIERE A DONNER UNIQUEMENT, EN PRESENCE DU GAZ A DETECTER, UNE VARIATION DE CONDUCTANCE ELECTRIQUE OPPOSEE A CELLE QUE DONNERAIT NORMALEMENT CET OXYDE METALLIQUE SEMI-CONDUCTEUR ET QUI, EN PRESENCE D'AUTRES GAZ, DONNE UNE VARIATION DE CONDUCTANCE DE MEME SENS QUE LE PREMIER CAPTEUR. EXEMPLE : NIO PUR ET NIO DOPE OU TRAITE SOUS VIDE. APPLICATION ENVISAGEE : DETECTION SELECTIVE DE SO DANS LES FUMEES.
FR7828711A 1978-10-03 1978-10-03 Dispositif de detection de gaz Granted FR2438271A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7828711A FR2438271A1 (fr) 1978-10-03 1978-10-03 Dispositif de detection de gaz

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7828711A FR2438271A1 (fr) 1978-10-03 1978-10-03 Dispositif de detection de gaz

Publications (2)

Publication Number Publication Date
FR2438271A1 true FR2438271A1 (fr) 1980-04-30
FR2438271B1 FR2438271B1 (fr) 1981-10-09

Family

ID=9213470

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7828711A Granted FR2438271A1 (fr) 1978-10-03 1978-10-03 Dispositif de detection de gaz

Country Status (1)

Country Link
FR (1) FR2438271A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2491590A1 (fr) * 1980-10-08 1982-04-09 Bosch Gmbh Robert Chauffe-eau chauffe aux gaz ou au mazout, notamment chauffe-eau fonctionnant selon le principe du passage
FR2516656A1 (fr) * 1981-11-18 1983-05-20 Commissariat Energie Atomique Dispositif de mesure de la concentration d'une espece chimique ionique et application de ce dispositif a la mesure du ph d'une solution
EP0089470A1 (fr) * 1982-03-24 1983-09-28 Hitachi, Ltd. Appareil détecteur de gaz
EP0317299A2 (fr) * 1987-11-17 1989-05-24 Katsuo Ehara Appareil et méthode pour identifier des odeurs
WO1993008467A1 (fr) * 1991-10-24 1993-04-29 Capteur Sensors & Analysers Ltd. Detection de substances gazeuses
WO1998003868A1 (fr) * 1996-07-23 1998-01-29 Apl Group International Llc Dispositif de surveillance pour la detection d'hydrocarbures et d'autres gaz dans une zone decouverte

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868846A (en) * 1973-07-02 1975-03-04 Ford Motor Co Circuit for converting a temperature dependent input signal to a temperature independent output signal
DE2535500A1 (de) * 1974-08-09 1976-02-26 Nissan Motor Einrichtung zur feststellung von aenderungen der konzentrationen von unverbrannten kohlenwasserstoffen
FR2282635A1 (fr) * 1974-08-19 1976-03-19 Philips Nv Cellule de mesure permettant de determiner la concentration en oxygene d'un melange gazeux
FR2385096A1 (fr) * 1977-03-22 1978-10-20 Renault Sonde de dosage d'un composant de flux gazeux

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868846A (en) * 1973-07-02 1975-03-04 Ford Motor Co Circuit for converting a temperature dependent input signal to a temperature independent output signal
DE2535500A1 (de) * 1974-08-09 1976-02-26 Nissan Motor Einrichtung zur feststellung von aenderungen der konzentrationen von unverbrannten kohlenwasserstoffen
FR2282635A1 (fr) * 1974-08-19 1976-03-19 Philips Nv Cellule de mesure permettant de determiner la concentration en oxygene d'un melange gazeux
FR2385096A1 (fr) * 1977-03-22 1978-10-20 Renault Sonde de dosage d'un composant de flux gazeux

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2491590A1 (fr) * 1980-10-08 1982-04-09 Bosch Gmbh Robert Chauffe-eau chauffe aux gaz ou au mazout, notamment chauffe-eau fonctionnant selon le principe du passage
FR2516656A1 (fr) * 1981-11-18 1983-05-20 Commissariat Energie Atomique Dispositif de mesure de la concentration d'une espece chimique ionique et application de ce dispositif a la mesure du ph d'une solution
EP0080402A1 (fr) * 1981-11-18 1983-06-01 Commissariat à l'Energie Atomique Dispositif de mesure de la concentration d'une espèce chimique ionique et application de ce dispositif à la mesure du pH d'une solution
EP0089470A1 (fr) * 1982-03-24 1983-09-28 Hitachi, Ltd. Appareil détecteur de gaz
EP0317299A2 (fr) * 1987-11-17 1989-05-24 Katsuo Ehara Appareil et méthode pour identifier des odeurs
EP0317299A3 (en) * 1987-11-17 1990-09-12 Katsuo Ehara Odor identifying apparatus and method
WO1993008467A1 (fr) * 1991-10-24 1993-04-29 Capteur Sensors & Analysers Ltd. Detection de substances gazeuses
WO1998003868A1 (fr) * 1996-07-23 1998-01-29 Apl Group International Llc Dispositif de surveillance pour la detection d'hydrocarbures et d'autres gaz dans une zone decouverte
US5908600A (en) * 1996-07-23 1999-06-01 Apl Group International, Llc Monitor for detecting hydrocarbons and other gases in an open area

Also Published As

Publication number Publication date
FR2438271B1 (fr) 1981-10-09

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