GB2002907A - Semiconductor gas sensing elements - Google Patents

Semiconductor gas sensing elements

Info

Publication number
GB2002907A
GB2002907A GB7832271A GB7832271A GB2002907A GB 2002907 A GB2002907 A GB 2002907A GB 7832271 A GB7832271 A GB 7832271A GB 7832271 A GB7832271 A GB 7832271A GB 2002907 A GB2002907 A GB 2002907A
Authority
GB
United Kingdom
Prior art keywords
substrate
oxide
layer
vapours
sensing elements
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.)
Withdrawn
Application number
GB7832271A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB2002907A publication Critical patent/GB2002907A/en
Withdrawn legal-status Critical Current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
    • G01N27/02—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

A gas detecting element for detecting fats and odorous substances in fumes comprises a semiconducting oxide, the resistance of which changes in the presence of combustible gases and vapours, and a porous catalytically active layer 6 at least partially covering the semiconducting oxide 4 which oxidises the vapours. The oxide 4 is formed on one surface of thermally conductive electrically insulating substrate 1 on the other surface of which is heater 2, the latter and substrate 1 being encased in ceramic insulating layer 1. The catalytic layer 6 is formed on a porous aluminium oxide layer 5. A positive temperature coefficient resistor may be mounted on the substrate and connected in series with heater conductor 2 or a thermoelectric element may be used for keeping the temperature constant. <IMAGE>
GB7832271A 1977-08-19 1978-08-04 Semiconductor gas sensing elements Withdrawn GB2002907A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772737385 DE2737385A1 (en) 1977-08-19 1977-08-19 GAS DETECTING ELEMENT FOR DETECTING FATS AND ODOR SUBSTANCES

Publications (1)

Publication Number Publication Date
GB2002907A true GB2002907A (en) 1979-02-28

Family

ID=6016772

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7832271A Withdrawn GB2002907A (en) 1977-08-19 1978-08-04 Semiconductor gas sensing elements

Country Status (4)

Country Link
DE (1) DE2737385A1 (en)
FR (1) FR2400705A1 (en)
GB (1) GB2002907A (en)
SE (1) SE7808655L (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2481455A1 (en) * 1980-04-25 1981-10-30 Sharp Kk AGING TREATMENT FOR A SEMICONDUCTOR GAS SENSOR INTENDED IN PARTICULAR TO BE INSTALLED IN A COOKING APPARATUS AND GAS SENSOR OBTAINED BY THIS TREATMENT
US4455378A (en) * 1981-05-13 1984-06-19 Dragerwerk Aktiengesellschaft Method of determining the content of an anesthetic gas in a selected location
GB2142147A (en) * 1983-06-24 1985-01-09 Standard Telephones Cables Ltd Gas sensor
GB2158246A (en) * 1984-03-28 1985-11-06 Sharp Kk Sensor temperature compensation
EP0280540A2 (en) * 1987-02-24 1988-08-31 American Intell-Sensors Corporation Method and apparatus for simultaneous detection of target gases in ambient air
WO1993024827A1 (en) * 1992-06-04 1993-12-09 Gaz De France Selective gas detection device
WO1994010559A2 (en) * 1992-10-26 1994-05-11 THE UNITED STATES OF AMERICA, as represented by UNITED STATES DEPARTMENT OF COMMERCE Temperature-controlled, micromachined arrays for chemical sensor fabrication and operation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3019387C2 (en) * 1980-05-21 1986-01-23 Siemens AG, 1000 Berlin und 8000 München Thin-film semiconductor gas sensor with a heating element integrated into the sensor structure

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2481455A1 (en) * 1980-04-25 1981-10-30 Sharp Kk AGING TREATMENT FOR A SEMICONDUCTOR GAS SENSOR INTENDED IN PARTICULAR TO BE INSTALLED IN A COOKING APPARATUS AND GAS SENSOR OBTAINED BY THIS TREATMENT
US4455378A (en) * 1981-05-13 1984-06-19 Dragerwerk Aktiengesellschaft Method of determining the content of an anesthetic gas in a selected location
GB2142147A (en) * 1983-06-24 1985-01-09 Standard Telephones Cables Ltd Gas sensor
GB2158246A (en) * 1984-03-28 1985-11-06 Sharp Kk Sensor temperature compensation
EP0280540A2 (en) * 1987-02-24 1988-08-31 American Intell-Sensors Corporation Method and apparatus for simultaneous detection of target gases in ambient air
EP0280540A3 (en) * 1987-02-24 1989-12-06 American Intell-Sensors Corporation Method and apparatus for simultaneous detection of target gases in ambient air
WO1993024827A1 (en) * 1992-06-04 1993-12-09 Gaz De France Selective gas detection device
FR2692047A1 (en) * 1992-06-04 1993-12-10 Gaz De France Selective gas detection sensor and device for its implementation.
US5573728A (en) * 1992-06-04 1996-11-12 Gaz De France Device for selective detection of gas
WO1994010559A2 (en) * 1992-10-26 1994-05-11 THE UNITED STATES OF AMERICA, as represented by UNITED STATES DEPARTMENT OF COMMERCE Temperature-controlled, micromachined arrays for chemical sensor fabrication and operation
WO1994010559A3 (en) * 1992-10-26 1994-08-04 Us Army Temperature-controlled, micromachined arrays for chemical sensor fabrication and operation

Also Published As

Publication number Publication date
FR2400705A1 (en) 1979-03-16
SE7808655L (en) 1979-02-20
DE2737385A1 (en) 1979-03-22
FR2400705B3 (en) 1981-05-29

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)