JPS4990984A - - Google Patents
Info
- Publication number
- JPS4990984A JPS4990984A JP48017543A JP1754373A JPS4990984A JP S4990984 A JPS4990984 A JP S4990984A JP 48017543 A JP48017543 A JP 48017543A JP 1754373 A JP1754373 A JP 1754373A JP S4990984 A JPS4990984 A JP S4990984A
- Authority
- JP
- Japan
- 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.)
- Pending
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
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)
- Investigating Or Analysing Materials By Optical Means (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19722260150 DE2260150C3 (en) | 1972-12-08 | 1972-12-08 | Method and device for the determination of fine dust concentrations |
| DE19722260313 DE2260313C2 (en) | 1972-12-09 | 1972-12-09 | Method and device for the determination of fine dust concentrations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4990984A true JPS4990984A (en) | 1974-08-30 |
Family
ID=25764209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP48017543A Pending JPS4990984A (en) | 1972-12-08 | 1973-02-14 |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS4990984A (en) |
| FR (1) | FR2210290A6 (en) |
| GB (1) | GB1388212A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5960342A (en) * | 1982-09-30 | 1984-04-06 | Toyota Motor Corp | System for measuring dust concentration |
| JPS6076645A (en) * | 1983-10-03 | 1985-05-01 | Hajime Kano | Dust-concentration measuring apparatus |
| JPH0772074A (en) * | 1993-09-07 | 1995-03-17 | Hochiki Corp | Scattered light type smoke sensor |
| JPH0772073A (en) * | 1993-09-07 | 1995-03-17 | Hochiki Corp | Scattered light type smoke sensor |
| JP2015191462A (en) * | 2014-03-28 | 2015-11-02 | 能美防災株式会社 | Smoke detector |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107576601B (en) * | 2017-09-20 | 2023-11-17 | 张家港朗亿机电设备有限公司 | Particle on-line detection and analysis instrument suitable for urban rail transit places |
| CN109752301A (en) * | 2019-03-05 | 2019-05-14 | 北京英视睿达科技有限公司 | The measuring device and check and correction factor determination method of total suspended particles concentration |
-
1973
- 1973-01-15 GB GB207873A patent/GB1388212A/en not_active Expired
- 1973-01-18 FR FR7301706A patent/FR2210290A6/fr not_active Expired
- 1973-02-14 JP JP48017543A patent/JPS4990984A/ja active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5960342A (en) * | 1982-09-30 | 1984-04-06 | Toyota Motor Corp | System for measuring dust concentration |
| JPS6076645A (en) * | 1983-10-03 | 1985-05-01 | Hajime Kano | Dust-concentration measuring apparatus |
| JPH0772074A (en) * | 1993-09-07 | 1995-03-17 | Hochiki Corp | Scattered light type smoke sensor |
| JPH0772073A (en) * | 1993-09-07 | 1995-03-17 | Hochiki Corp | Scattered light type smoke sensor |
| JP2015191462A (en) * | 2014-03-28 | 2015-11-02 | 能美防災株式会社 | Smoke detector |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1388212A (en) | 1975-03-26 |
| FR2210290A6 (en) | 1974-07-05 |