FR2284881B1 - - Google Patents
Info
- Publication number
- FR2284881B1 FR2284881B1 FR7430785A FR7430785A FR2284881B1 FR 2284881 B1 FR2284881 B1 FR 2284881B1 FR 7430785 A FR7430785 A FR 7430785A FR 7430785 A FR7430785 A FR 7430785A FR 2284881 B1 FR2284881 B1 FR 2284881B1
- Authority
- FR
- France
- 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
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
- G01N27/122—Circuits particularly adapted therefor, e.g. linearising circuits
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- 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
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Combustion & Propulsion (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7430785A FR2284881A1 (fr) | 1974-09-11 | 1974-09-11 | Procede et dispositif pour determiner la proportion d'un ou de plusieurs composants dans un melange gazeux |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7430785A FR2284881A1 (fr) | 1974-09-11 | 1974-09-11 | Procede et dispositif pour determiner la proportion d'un ou de plusieurs composants dans un melange gazeux |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2284881A1 FR2284881A1 (fr) | 1976-04-09 |
| FR2284881B1 true FR2284881B1 (US07709020-20100504-C00032.png) | 1977-10-28 |
Family
ID=9142985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7430785A Granted FR2284881A1 (fr) | 1974-09-11 | 1974-09-11 | Procede et dispositif pour determiner la proportion d'un ou de plusieurs composants dans un melange gazeux |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2284881A1 (US07709020-20100504-C00032.png) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2624974B1 (fr) * | 1987-12-21 | 1990-09-07 | Dana Dominique | Dispositif detecteur de gaz |
| FR2763130B1 (fr) * | 1997-05-12 | 1999-09-03 | Motorola Semiconducteurs | Procede et systeme capteur permettant de determiner la concentration en une espece chimique |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3877291A (en) * | 1972-08-15 | 1975-04-15 | Borg Warner | Portable breath tester |
-
1974
- 1974-09-11 FR FR7430785A patent/FR2284881A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2284881A1 (fr) | 1976-04-09 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |