DE291748C - - Google Patents
Info
- Publication number
- DE291748C DE291748C DENDAT291748D DE291748DA DE291748C DE 291748 C DE291748 C DE 291748C DE NDAT291748 D DENDAT291748 D DE NDAT291748D DE 291748D A DE291748D A DE 291748DA DE 291748 C DE291748 C DE 291748C
- Authority
- DE
- Germany
- Prior art keywords
- smoke
- light
- chamber
- selenium cell
- fire extinguisher
- Prior art date
- 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.)
- Active
Links
- 239000000779 smoke Substances 0.000 claims description 19
- 229910052711 selenium Inorganic materials 0.000 claims description 14
- 239000011669 selenium Substances 0.000 claims description 14
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims description 13
- 238000005192 partition Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000003748 selenium group Chemical class *[Se]* 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
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)
- Fire-Detection Mechanisms (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE291748T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE291748C true DE291748C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=6069625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT291748D Active DE291748C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE291748C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
| NL (1) | NL3755C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
-
0
- DE DENDAT291748D patent/DE291748C/de active Active
- NL NL3755D patent/NL3755C/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| NL3755C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
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