JPS5444468B2 - - Google Patents
Info
- Publication number
- JPS5444468B2 JPS5444468B2 JP5967175A JP5967175A JPS5444468B2 JP S5444468 B2 JPS5444468 B2 JP S5444468B2 JP 5967175 A JP5967175 A JP 5967175A JP 5967175 A JP5967175 A JP 5967175A JP S5444468 B2 JPS5444468 B2 JP S5444468B2
- 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.)
- 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
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 The Use Of Chemical Reactions (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Fire-Detection Mechanisms (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5967175A JPS51136471A (en) | 1975-05-21 | 1975-05-21 | Photocell smoke sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5967175A JPS51136471A (en) | 1975-05-21 | 1975-05-21 | Photocell smoke sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS51136471A JPS51136471A (en) | 1976-11-25 |
| JPS5444468B2 true JPS5444468B2 (en:Method) | 1979-12-26 |
Family
ID=13119872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5967175A Granted JPS51136471A (en) | 1975-05-21 | 1975-05-21 | Photocell smoke sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS51136471A (en:Method) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0358795U (en:Method) * | 1989-10-09 | 1991-06-07 | ||
| GB201006680D0 (en) * | 2010-04-21 | 2010-06-09 | Fireangel Ltd | Alarm |
-
1975
- 1975-05-21 JP JP5967175A patent/JPS51136471A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS51136471A (en) | 1976-11-25 |