FR1490273A - Automatic fire alarm device using an ion device - Google Patents
Automatic fire alarm device using an ion deviceInfo
- Publication number
- FR1490273A FR1490273A FR74022A FR74022A FR1490273A FR 1490273 A FR1490273 A FR 1490273A FR 74022 A FR74022 A FR 74022A FR 74022 A FR74022 A FR 74022A FR 1490273 A FR1490273 A FR 1490273A
- Authority
- FR
- France
- Prior art keywords
- fire alarm
- automatic fire
- ion
- alarm device
- ion device
- 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
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
- G01T7/12—Provision for actuation of an alarm
- G01T7/125—Alarm- or controlling circuits using ionisation chambers, proportional counters or Geiger-Mueller tubes, also functioning as UV detectors
-
- 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
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR74022A FR1490273A (en) | 1966-03-30 | 1966-08-24 | Automatic fire alarm device using an ion device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1966028133U JPS446089Y1 (en) | 1966-03-30 | 1966-03-30 | |
FR74022A FR1490273A (en) | 1966-03-30 | 1966-08-24 | Automatic fire alarm device using an ion device |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1490273A true FR1490273A (en) | 1967-07-28 |
Family
ID=26172732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR74022A Expired FR1490273A (en) | 1966-03-30 | 1966-08-24 | Automatic fire alarm device using an ion device |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1490273A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2384307A1 (en) * | 1977-03-16 | 1978-10-13 | Siemens Ag | IONIZATION OPERATED FIRE ALARM |
US4851819A (en) * | 1987-03-27 | 1989-07-25 | Hochiki Kabushiki Kaisha | Photoelectric smoke detector with permanently fixed insect net |
-
1966
- 1966-08-24 FR FR74022A patent/FR1490273A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2384307A1 (en) * | 1977-03-16 | 1978-10-13 | Siemens Ag | IONIZATION OPERATED FIRE ALARM |
US4851819A (en) * | 1987-03-27 | 1989-07-25 | Hochiki Kabushiki Kaisha | Photoelectric smoke detector with permanently fixed insect net |
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