BE509798A - - Google Patents
Info
- Publication number
- BE509798A BE509798A BE509798DA BE509798A BE 509798 A BE509798 A BE 509798A BE 509798D A BE509798D A BE 509798DA BE 509798 A BE509798 A BE 509798A
- Authority
- BE
- Belgium
Links
Classifications
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- 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
- G01N27/185—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 using a catharometer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R17/00—Measuring arrangements involving comparison with a reference value, e.g. bridge
- G01R17/10—AC or DC measuring bridges
- G01R17/105—AC or DC measuring bridges for measuring impedance or resistance
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D21/00—Control of chemical or physico-chemical variables, e.g. pH value
- G05D21/02—Control of chemical or physico-chemical variables, e.g. pH value characterised by the use of electric means
Landscapes
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Automation & Control Theory (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1040286X | 1951-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE509798A true BE509798A (pt) |
Family
ID=9588851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE509798D BE509798A (pt) | 1951-03-08 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2751777A (pt) |
| BE (1) | BE509798A (pt) |
| DE (1) | DE1040286B (pt) |
| FR (1) | FR1033723A (pt) |
| GB (1) | GB768344A (pt) |
| NL (1) | NL83787C (pt) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6234014B1 (en) * | 1955-11-22 | 2001-05-22 | The United States Of America As Represented By The United States Department Of Energy | Method and apparatus for analyzing gas flow through conduits |
| US3040561A (en) * | 1957-11-21 | 1962-06-26 | Westinghouse Electric Corp | Hydrogen gauge |
| US3187558A (en) * | 1961-10-10 | 1965-06-08 | Koncen Raymond Earl | Solid state portable gas leak detector |
| US3474660A (en) * | 1966-02-17 | 1969-10-28 | Hewlett Packard Co | Thermal conductivity detector |
| US4266188A (en) * | 1979-11-30 | 1981-05-05 | Mobil Oil Corporation | Method and apparatus for measuring a component in a flow stream |
| FR2556098B1 (fr) * | 1983-12-06 | 1990-05-11 | Sumitomo Light Metal Ind | Appareil de mesure de la concentration en hydrogene dissous dans un metal en fusion |
| US5265459A (en) * | 1991-08-22 | 1993-11-30 | The Perkin Elmer Corporation | Single-element thermal conductivity detector |
| IT1312311B1 (it) | 1999-05-07 | 2002-04-15 | Thermoquest Italia Spa | Dispositivo per la misurazione della conducibilita' termica di unfluido |
| BE1015893A3 (fr) * | 2004-02-06 | 2005-11-08 | Ct Rech Metallurgiques Asbl | Procede de controle du decapage des metaux. |
| CN110426423B (zh) * | 2019-08-08 | 2022-05-27 | 李琦 | 一种检测氖气中单项常量杂质气体含量的装置 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1715374A (en) * | 1926-05-29 | 1929-06-04 | Charles Engelhard Inc | Electrical instrument |
| US2045640A (en) * | 1934-10-29 | 1936-06-30 | Leeds & Northrup Co | Thermal conductivity cell |
| DE658460C (de) * | 1935-08-28 | 1938-04-06 | Siemens & Halske Akt Ges | Rauchgaspruefer mit elektrischen Messdraehten |
| US2285280A (en) * | 1938-10-12 | 1942-06-02 | Bailey Meter Co | Gas analyzer |
| US2231166A (en) * | 1939-06-20 | 1941-02-11 | Davis Emergency Equipment Comp | Combustible gas indicator |
| US2369811A (en) * | 1941-07-03 | 1945-02-20 | Stanolind Oil & Gas Co | Drill mud logging recording system or the like |
| US2650496A (en) * | 1948-05-17 | 1953-09-01 | Phillips Petroleum Co | Fluid flowmeter with heated resistance bridge circuit |
-
0
- NL NL83787D patent/NL83787C/xx active
- BE BE509798D patent/BE509798A/xx unknown
-
1951
- 1951-03-08 FR FR1033723D patent/FR1033723A/fr not_active Expired
-
1952
- 1952-03-06 US US275079A patent/US2751777A/en not_active Expired - Lifetime
- 1952-03-07 DE DES27534A patent/DE1040286B/de active Pending
- 1952-03-10 GB GB6219/52A patent/GB768344A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1040286B (de) | 1958-10-02 |
| NL83787C (pt) | |
| US2751777A (en) | 1956-06-26 |
| GB768344A (en) | 1957-02-13 |
| FR1033723A (fr) | 1953-07-15 |