FR2171801A5 - - Google Patents
Info
- Publication number
- FR2171801A5 FR2171801A5 FR7304547A FR7304547A FR2171801A5 FR 2171801 A5 FR2171801 A5 FR 2171801A5 FR 7304547 A FR7304547 A FR 7304547A FR 7304547 A FR7304547 A FR 7304547A FR 2171801 A5 FR2171801 A5 FR 2171801A5
- 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
- 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
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
- G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
- G01N21/534—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke by measuring transmission alone, i.e. determining opacity
-
- 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
- G01N21/27—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using photo-electric detection ; circuits for computing concentration
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Theoretical Computer Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB610572A GB1425564A (en) | 1972-02-09 | 1972-02-09 | Opacimeters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2171801A5 true FR2171801A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1973-09-21 |
Family
ID=9808477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7304547A Expired FR2171801A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1972-02-09 | 1973-02-08 |
Country Status (6)
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1549193A (en) * | 1975-04-29 | 1979-08-01 | Hartridge Ltd Leslie | Apparatus for measuring smoke density |
| DE4129068C2 (de) * | 1991-09-02 | 1999-05-20 | Grundig Ag | Anordnung zum Messen von Abgasen in Verbrennungsmotoren |
| GB2260809B (en) * | 1991-10-22 | 1996-04-03 | Marconi Gec Ltd | Exhaust gas particle sensor |
-
1972
- 1972-02-09 GB GB610572A patent/GB1425564A/en not_active Expired
-
1973
- 1973-02-06 US US00330107A patent/US3843266A/en not_active Expired - Lifetime
- 1973-02-08 FR FR7304547A patent/FR2171801A5/fr not_active Expired
- 1973-02-08 NL NL7301813A patent/NL7301813A/xx not_active Application Discontinuation
- 1973-02-09 DE DE2306451A patent/DE2306451A1/de active Pending
- 1973-02-09 JP JP48016360A patent/JPS4889779A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4889779A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1973-11-22 |
| US3843266A (en) | 1974-10-22 |
| DE2306451A1 (de) | 1973-08-16 |
| NL7301813A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1973-08-13 |
| GB1425564A (en) | 1976-02-18 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |