FR1147287A - Dispositif de détection de fumées, de gaz radioactifs, de flammes (ou de lumière)et de contacts - Google Patents
Dispositif de détection de fumées, de gaz radioactifs, de flammes (ou de lumière)et de contactsInfo
- Publication number
- FR1147287A FR1147287A FR1147287DA FR1147287A FR 1147287 A FR1147287 A FR 1147287A FR 1147287D A FR1147287D A FR 1147287DA FR 1147287 A FR1147287 A FR 1147287A
- Authority
- FR
- France
- Prior art keywords
- flames
- contacts
- light
- detecting smoke
- radioactive gases
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/64—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
- G01N27/66—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber and measuring current or voltage
-
- 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
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1147287T | 1956-04-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1147287A true FR1147287A (fr) | 1957-11-21 |
Family
ID=9645817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1147287D Expired FR1147287A (fr) | 1956-04-06 | 1956-04-06 | Dispositif de détection de fumées, de gaz radioactifs, de flammes (ou de lumière)et de contacts |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH348632A (fr) |
FR (1) | FR1147287A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1900888A1 (de) * | 1968-01-19 | 1969-09-04 | Vigifeu | Ionisierkammer,insbesondere fuer Branddetektorgeraet |
-
1956
- 1956-04-06 FR FR1147287D patent/FR1147287A/fr not_active Expired
- 1956-11-06 CH CH348632D patent/CH348632A/fr unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1900888A1 (de) * | 1968-01-19 | 1969-09-04 | Vigifeu | Ionisierkammer,insbesondere fuer Branddetektorgeraet |
Also Published As
Publication number | Publication date |
---|---|
CH348632A (fr) | 1960-08-31 |
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