FR2478816B1 - - Google Patents
Info
- Publication number
- FR2478816B1 FR2478816B1 FR8006230A FR8006230A FR2478816B1 FR 2478816 B1 FR2478816 B1 FR 2478816B1 FR 8006230 A FR8006230 A FR 8006230A FR 8006230 A FR8006230 A FR 8006230A FR 2478816 B1 FR2478816 B1 FR 2478816B1
- 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
- G01N27/18—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 changes in the thermal conductivity of a surrounding material to be tested
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
Landscapes
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Immunology (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Analytical Chemistry (AREA)
- Pathology (AREA)
- Biochemistry (AREA)
- Emergency Alarm Devices (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8006230A FR2478816A1 (fr) | 1980-03-20 | 1980-03-20 | Detecteur de fuites de gaz |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8006230A FR2478816A1 (fr) | 1980-03-20 | 1980-03-20 | Detecteur de fuites de gaz |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2478816A1 FR2478816A1 (fr) | 1981-09-25 |
| FR2478816B1 true FR2478816B1 (2) | 1984-02-24 |
Family
ID=9239892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8006230A Granted FR2478816A1 (fr) | 1980-03-20 | 1980-03-20 | Detecteur de fuites de gaz |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2478816A1 (2) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307730A (zh) * | 2017-07-27 | 2019-02-05 | 研能科技股份有限公司 | 致动传感模块的驱动系统 |
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1980
- 1980-03-20 FR FR8006230A patent/FR2478816A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2478816A1 (fr) | 1981-09-25 |