FR2475733A1 - Detecteur de la presence d'un gaz combustible, notamment de methane - Google Patents
Detecteur de la presence d'un gaz combustible, notamment de methane Download PDFInfo
- Publication number
- FR2475733A1 FR2475733A1 FR8002914A FR8002914A FR2475733A1 FR 2475733 A1 FR2475733 A1 FR 2475733A1 FR 8002914 A FR8002914 A FR 8002914A FR 8002914 A FR8002914 A FR 8002914A FR 2475733 A1 FR2475733 A1 FR 2475733A1
- Authority
- FR
- France
- Prior art keywords
- filament
- bridge
- detector
- combustible gas
- bridges
- 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
- 238000001514 detection method Methods 0.000 title 1
- 238000004880 explosion Methods 0.000 title 1
- 230000003197 catalytic effect Effects 0.000 claims abstract description 7
- 238000005070 sampling Methods 0.000 claims abstract description 4
- 238000005259 measurement Methods 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000005265 energy consumption Methods 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 claims description 3
- 238000005065 mining Methods 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 14
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/117—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means by using a detection device for specific gases, e.g. combustion products, produced by the fire
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biochemistry (AREA)
- Electrochemistry (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8002914A FR2475733A1 (fr) | 1980-02-11 | 1980-02-11 | Detecteur de la presence d'un gaz combustible, notamment de methane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8002914A FR2475733A1 (fr) | 1980-02-11 | 1980-02-11 | Detecteur de la presence d'un gaz combustible, notamment de methane |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2475733A1 true FR2475733A1 (fr) | 1981-08-14 |
| FR2475733B1 FR2475733B1 (show.php) | 1983-08-12 |
Family
ID=9238429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8002914A Granted FR2475733A1 (fr) | 1980-02-11 | 1980-02-11 | Detecteur de la presence d'un gaz combustible, notamment de methane |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2475733A1 (show.php) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3147465A (en) * | 1960-12-27 | 1964-09-01 | Mine Safety Appliances Co | Methane alarm and control system |
| US3209343A (en) * | 1961-12-11 | 1965-09-28 | Nat Lead Co | Multi-station gas detecting apparatus |
| BE688266A (show.php) * | 1966-10-14 | 1967-03-16 | ||
| GB1548308A (en) * | 1976-11-02 | 1979-07-11 | Redding R J | Analysis instruments |
-
1980
- 1980-02-11 FR FR8002914A patent/FR2475733A1/fr active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3147465A (en) * | 1960-12-27 | 1964-09-01 | Mine Safety Appliances Co | Methane alarm and control system |
| US3209343A (en) * | 1961-12-11 | 1965-09-28 | Nat Lead Co | Multi-station gas detecting apparatus |
| BE688266A (show.php) * | 1966-10-14 | 1967-03-16 | ||
| GB1548308A (en) * | 1976-11-02 | 1979-07-11 | Redding R J | Analysis instruments |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2475733B1 (show.php) | 1983-08-12 |
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