NL7713537A - Micro-stromingsvoeler voor gassen. - Google Patents
Micro-stromingsvoeler voor gassen.Info
- Publication number
- NL7713537A NL7713537A NL7713537A NL7713537A NL7713537A NL 7713537 A NL7713537 A NL 7713537A NL 7713537 A NL7713537 A NL 7713537A NL 7713537 A NL7713537 A NL 7713537A NL 7713537 A NL7713537 A NL 7713537A
- Authority
- NL
- Netherlands
- Prior art keywords
- gases
- flow sensor
- micro flow
- micro
- sensor
- Prior art date
Links
- 239000007789 gas Substances 0.000 title 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
- G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
-
- 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
- G01M3/002—Investigating fluid-tightness of structures by using thermal means
-
- 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
- G01M3/16—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
-
- 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
-
- 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
- G01M3/38—Investigating fluid-tightness of structures by using light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/37—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using pneumatic detection
-
- 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
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2656487A DE2656487C3 (de) | 1976-12-14 | 1976-12-14 | Mikroströmungsfühler für Gase |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| NL7713537A true NL7713537A (nl) | 1978-06-16 |
| NL186406B NL186406B (nl) | 1990-06-18 |
| NL186406C NL186406C (nl) | 1990-11-16 |
Family
ID=5995438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NLAANVRAGE7713537,A NL186406C (nl) | 1976-12-14 | 1977-12-07 | Microstromingsvoeler voor gassen. |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4154087A (nl) |
| JP (1) | JPS5921505B2 (nl) |
| CH (1) | CH626452A5 (nl) |
| DE (1) | DE2656487C3 (nl) |
| FR (1) | FR2374626A1 (nl) |
| GB (1) | GB1556979A (nl) |
| IT (1) | IT1088026B (nl) |
| NL (1) | NL186406C (nl) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2720636C2 (de) * | 1977-05-07 | 1985-01-03 | Leybold-Heraeus GmbH, 5000 Köln | Pneumatischer Infrarot-Strahlungsdetektor mit einer vakuumdichten Kammer und einem strahlungsdurchlässigen Fenster |
| DE2845662A1 (de) * | 1978-10-20 | 1980-05-08 | Bosch Gmbh Robert | Vorrichtung zur messung der masse eines stroemenden mediums |
| JPS57173758A (en) * | 1981-04-20 | 1982-10-26 | Hitachi Ltd | Hot wire type current meter |
| US4604895A (en) * | 1983-05-02 | 1986-08-12 | Air Sensor Inc. | Hot wire anemometer |
| US4523461A (en) * | 1983-05-02 | 1985-06-18 | Air Sensors, Inc. | Hot wire anemometer |
| JPS60149010U (ja) * | 1984-03-14 | 1985-10-03 | 日本電気ホームエレクトロニクス株式会社 | Ｏａ機器の照明装置 |
| JPS6321057Y2 (nl) * | 1984-10-31 | 1988-06-10 | ||
| DE3630427A1 (de) * | 1986-09-06 | 1988-03-10 | Draegerwerk Ag | Hitzdrahtsensor zur integralen messung von stoff- oder volumenstroemen |
| DE3842399C2 (de) * | 1988-12-16 | 1997-07-31 | Fisher Rosemount Gmbh & Co Ges | Mikroströmungsfühler für Gase |
| EP1832865A4 (en) * | 2004-12-28 | 2008-09-10 | Yokogawa Electric Corp | Infrared gas analyzer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2509889A (en) * | 1948-01-13 | 1950-05-30 | Bell Telephone Labor Inc | Differential altimeter |
| US2645117A (en) * | 1948-12-30 | 1953-07-14 | Continental Can Co | Leak detector for cans and the like |
| US3621707A (en) * | 1969-07-08 | 1971-11-23 | Hewlett Packard Co | Thermal conductivity detector assembly |
| US4024761A (en) * | 1976-06-11 | 1977-05-24 | Kyma Corporation | Directional hot film anemometer transducer |
-
1976
- 1976-12-14 DE DE2656487A patent/DE2656487C3/de not_active Expired
-
1977
- 1977-10-31 IT IT29204/77A patent/IT1088026B/it active
- 1977-11-28 CH CH1452177A patent/CH626452A5/de not_active IP Right Cessation
- 1977-12-07 NL NLAANVRAGE7713537,A patent/NL186406C/nl not_active IP Right Cessation
- 1977-12-08 GB GB51195/77A patent/GB1556979A/en not_active Expired
- 1977-12-14 US US05/860,477 patent/US4154087A/en not_active Expired - Lifetime
- 1977-12-14 JP JP52150413A patent/JPS5921505B2/ja not_active Expired
- 1977-12-14 FR FR7737713A patent/FR2374626A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| IT1088026B (it) | 1985-06-04 |
| GB1556979A (en) | 1979-12-05 |
| NL186406C (nl) | 1990-11-16 |
| CH626452A5 (nl) | 1981-11-13 |
| US4154087A (en) | 1979-05-15 |
| JPS5921505B2 (ja) | 1984-05-21 |
| FR2374626A1 (fr) | 1978-07-13 |
| JPS5374457A (en) | 1978-07-01 |
| DE2656487B2 (de) | 1980-04-30 |
| DE2656487C3 (de) | 1981-01-29 |
| DE2656487A1 (de) | 1978-06-15 |
| NL186406B (nl) | 1990-06-18 |
| FR2374626B1 (nl) | 1982-11-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A85 | Still pending on 85-01-01 | ||
| BA | A request for search or an international-type search has been filed | ||
| BB | A search report has been drawn up | ||
| BC | A request for examination has been filed | ||
| CNR | Transfer of rights (patent application after its laying open for public inspection) |
Free format text: LEYBOLD-HERAEUS GMBH |
|
| CNR | Transfer of rights (patent application after its laying open for public inspection) |
Free format text: LEYBOLD AKTIENGESELLSCHAFT TE HANAU A.D. MAIN |
|
| SNR | Assignments of patents or rights arising from examined patent applications |
Owner name: ROSEMOUNT GMBH & CO. |
|
| V1 | Lapsed because of non-payment of the annual fee |