FR854719A - Système et appareil pour détecter et signaler la présence de fumée ou autre matière en suspension dans des courants de fluide tels que l'air
- Google Patents
Système et appareil pour détecter et signaler la présence de fumée ou autre matière en suspension dans des courants de fluide tels que l'air
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BRITISH ELECTRICON LONDON Ltd
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BRITISH ELECTRICON LONDON Ltd
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Publication of FR854719ApublicationCriticalpatent/FR854719A/fr
G08B—SIGNALLING SYSTEMS, e.g. PERSONAL 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 SYSTEMS, e.g. PERSONAL 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
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Chemical & Material Sciences
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Analytical Chemistry
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Business, Economics & Management
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Emergency Management
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Physics & Mathematics
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General Physics & Mathematics
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FR854719D1938-11-231939-05-13Système et appareil pour détecter et signaler la présence de fumée ou autre matière en suspension dans des courants de fluide tels que l'air
ExpiredFR854719A
(fr)
Dispositif turbo-propulseur pour pompes à émulsion d'air, ou autre fluide sous pression, pour l'élévation de liquides contenant des matières en suspension