FR2337339A1 - Dispositif et procede de chauffage periodique d'un element pour detecter la presence d'un gaz - Google Patents
Dispositif et procede de chauffage periodique d'un element pour detecter la presence d'un gazInfo
- Publication number
- FR2337339A1 FR2337339A1 FR7639621A FR7639621A FR2337339A1 FR 2337339 A1 FR2337339 A1 FR 2337339A1 FR 7639621 A FR7639621 A FR 7639621A FR 7639621 A FR7639621 A FR 7639621A FR 2337339 A1 FR2337339 A1 FR 2337339A1
- Authority
- FR
- France
- Prior art keywords
- pulse width
- sensor element
- sensing device
- feedback control
- heating system
- 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
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
-
- 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
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 Electric Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US64583875A | 1975-12-31 | 1975-12-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2337339A1 true FR2337339A1 (fr) | 1977-07-29 |
FR2337339B3 FR2337339B3 (fr) | 1979-09-07 |
Family
ID=24590676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7639621A Granted FR2337339A1 (fr) | 1975-12-31 | 1976-12-30 | Dispositif et procede de chauffage periodique d'un element pour detecter la presence d'un gaz |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS5289999A (fr) |
DE (1) | DE2659321A1 (fr) |
FR (1) | FR2337339A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0008977A1 (fr) * | 1978-08-25 | 1980-03-19 | Etablissement public dit: CHARBONNAGES DE FRANCE | Appareil de mesure d'un constituant d'une atmosphère |
EP0254906A2 (fr) * | 1986-07-14 | 1988-02-03 | Hewlett-Packard Company | Détecteur de la conductivité thermique modulé par impulsions |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1272779A (fr) * | 1985-03-04 | 1990-08-14 | Toshiaki Mizuta | Sonde a rechauffement periodique |
GB0507895D0 (en) * | 2005-04-19 | 2005-05-25 | City Tech | Gas sensor assembly |
CN112857406B (zh) * | 2021-01-08 | 2023-05-23 | 重庆开谨科技有限公司 | 一种高压激励的惠斯顿电桥测量方法 |
-
1976
- 1976-12-27 JP JP16100976A patent/JPS5289999A/ja active Pending
- 1976-12-29 DE DE19762659321 patent/DE2659321A1/de active Pending
- 1976-12-30 FR FR7639621A patent/FR2337339A1/fr active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0008977A1 (fr) * | 1978-08-25 | 1980-03-19 | Etablissement public dit: CHARBONNAGES DE FRANCE | Appareil de mesure d'un constituant d'une atmosphère |
FR2434389A1 (fr) * | 1978-08-25 | 1980-03-21 | Charbonnages De France | Appareil de mesure d'un constituant d'une atmosphere |
EP0254906A2 (fr) * | 1986-07-14 | 1988-02-03 | Hewlett-Packard Company | Détecteur de la conductivité thermique modulé par impulsions |
EP0254906A3 (fr) * | 1986-07-14 | 1989-07-19 | Hewlett-Packard Company | Détecteur de la conductivité thermique modulé par impulsions |
Also Published As
Publication number | Publication date |
---|---|
JPS5289999A (en) | 1977-07-28 |
FR2337339B3 (fr) | 1979-09-07 |
DE2659321A1 (de) | 1977-07-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |