FR2373793B1 - - Google Patents
Info
- Publication number
- FR2373793B1 FR2373793B1 FR7736459A FR7736459A FR2373793B1 FR 2373793 B1 FR2373793 B1 FR 2373793B1 FR 7736459 A FR7736459 A FR 7736459A FR 7736459 A FR7736459 A FR 7736459A FR 2373793 B1 FR2373793 B1 FR 2373793B1
- 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
- G01N27/14—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
-
- 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
- G01N33/0032—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array using two or more different physical functioning modes
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- General Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19762655954 DE2655954C3 (en) | 1976-12-10 | 1976-12-10 | Device for the clear display of the proportion of combustible components in a gas sample |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2373793A1 FR2373793A1 (en) | 1978-07-07 |
| FR2373793B1 true FR2373793B1 (en) | 1984-01-06 |
Family
ID=5995161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7736459A Granted FR2373793A1 (en) | 1976-12-10 | 1977-11-25 | DEVICE FOR UNQUIVOUSLY INDICATING THE PROPORTION OF COMBUSTIBLE CONSTITUENTS IN A GAS SAMPLE |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE861685A (en) |
| DE (1) | DE2655954C3 (en) |
| FR (1) | FR2373793A1 (en) |
| GB (1) | GB1575767A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK172281A (en) * | 1981-04-15 | 1982-10-16 | O Johannsen | APPLIANCE FOR ANALYSIS OF COMBUSTION GAS |
| FR2507779A1 (en) * | 1981-06-15 | 1982-12-17 | Charbonnages De France | METHOD AND APPARATUS FOR MEDIUM-NEW EXPLOSIMETRY OF BREAKING DOUBTS |
| DE3132297C2 (en) * | 1981-08-12 | 1985-05-15 | Auergesellschaft Gmbh, 1000 Berlin | Circuit arrangement for a device for measuring and displaying the concentration of flammable gases and vapors contained in air |
| GB2105849B (en) * | 1981-09-11 | 1985-05-15 | Coal Ind | Electrical gas analyser for sensing at least two gases |
| DE3622307A1 (en) * | 1986-07-03 | 1988-01-14 | Draegerwerk Ag | MEASURING DEVICE FOR DETECTING THE CONTENT OF COMBUSTIBLE GASES IN AIR MIXTURES |
| GB2361997A (en) * | 2000-05-04 | 2001-11-07 | Bw Technologies Ltd | Combustible gas detection |
-
1976
- 1976-12-10 DE DE19762655954 patent/DE2655954C3/en not_active Expired
-
1977
- 1977-11-25 FR FR7736459A patent/FR2373793A1/en active Granted
- 1977-12-09 BE BE183315A patent/BE861685A/en not_active IP Right Cessation
- 1977-12-12 GB GB5170677A patent/GB1575767A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2373793A1 (en) | 1978-07-07 |
| DE2655954C3 (en) | 1980-05-22 |
| BE861685A (en) | 1978-03-31 |
| DE2655954B2 (en) | 1979-08-23 |
| DE2655954A1 (en) | 1978-06-22 |
| GB1575767A (en) | 1980-09-24 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |