FR2193486A5 - - Google Patents
Info
- Publication number
- FR2193486A5 FR2193486A5 FR7226516A FR7226516A FR2193486A5 FR 2193486 A5 FR2193486 A5 FR 2193486A5 FR 7226516 A FR7226516 A FR 7226516A FR 7226516 A FR7226516 A FR 7226516A FR 2193486 A5 FR2193486 A5 FR 2193486A5
- 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
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/103—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using a light emitting and receiving device
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
- G08B17/11—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means using an ionisation chamber for detecting smoke or gas
- G08B17/113—Constructional details
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7226516A FR2193486A5 (fr) | 1972-07-24 | 1972-07-24 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7226516A FR2193486A5 (fr) | 1972-07-24 | 1972-07-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2193486A5 true FR2193486A5 (fr) | 1974-02-15 |
Family
ID=9102235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7226516A Expired FR2193486A5 (fr) | 1972-07-24 | 1972-07-24 |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2193486A5 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0015007A1 (fr) * | 1979-02-23 | 1980-09-03 | Hekatron GmbH | Montage pour un indicateur optique de gaz de fumée |
EP0054680A1 (fr) * | 1980-12-18 | 1982-06-30 | Cerberus Ag | Détecteur de fumée d'après le principe d'extinction de radiation |
DE2856259C2 (de) * | 1978-12-27 | 1987-01-22 | Cerberus AG, Männedorf, Zürich | Rauchdetektor |
-
1972
- 1972-07-24 FR FR7226516A patent/FR2193486A5/fr not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2856259C2 (de) * | 1978-12-27 | 1987-01-22 | Cerberus AG, Männedorf, Zürich | Rauchdetektor |
EP0015007A1 (fr) * | 1979-02-23 | 1980-09-03 | Hekatron GmbH | Montage pour un indicateur optique de gaz de fumée |
EP0054680A1 (fr) * | 1980-12-18 | 1982-06-30 | Cerberus Ag | Détecteur de fumée d'après le principe d'extinction de radiation |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
TP | Transmission of property |