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GAMMA ELECTRONIC
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GAMMA ELECTRONIC
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Application filed by GAMMA ELECTRONICfiledCriticalGAMMA ELECTRONIC
Priority to FR7900081ApriorityCriticalpatent/FR2445995A3/fr
Publication of FR2445995A3publicationCriticalpatent/FR2445995A3/fr
Application grantedgrantedCritical
Publication of FR2445995B3publicationCriticalpatent/FR2445995B3/fr
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
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
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Chemical & Material Sciences
(AREA)
General Physics & Mathematics
(AREA)
Analytical Chemistry
(AREA)
Health & Medical Sciences
(AREA)
Physics & Mathematics
(AREA)
Chemical Kinetics & Catalysis
(AREA)
Emergency Management
(AREA)
Toxicology
(AREA)
Business, Economics & Management
(AREA)
Electrochemistry
(AREA)
Life Sciences & Earth Sciences
(AREA)
Biochemistry
(AREA)
General Health & Medical Sciences
(AREA)
Immunology
(AREA)
Pathology
(AREA)
Fire-Detection Mechanisms
(AREA)
FR7900081A1979-01-031979-01-03Detecteur de fumees velocimetrique a faible source d'ionisation
GrantedFR2445995A3
(fr)