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AbstractAbstract
[en] A suggestion for the improvement of a known type of ionization smoke alarm system is made which is to render this system less sensitive to dust deposits. According to the invention, the connection between reference chamber and measuring chamber should only be possible via the opening of the measuring electrode and this opening should have such measurements that 90% of the radiation from the source enters the measuring chamber. A detailed description is given. (HP)
[de]
Es wird eine Verbesserung fuer Ionisations-Rauchmelder bekannter Art vorgeschlagen, die diese Vorrichtungen unempfindlicher gegen Staubablagerungen machen soll. Erfindungsgemaess soll die Verbindung zwischen Referenzkammer und Messkammer nur ueber die Oeffnung der Messelektrode moeglich sein und diese Oeffnung soll so bemessen sein, dass 90% der Strahlung der Strahlungsquelle in die Messkammer gelangt. Ausfuehrliche Beschreibung. (HP)Original Title
Ionisations-Rauchmelder
Primary Subject
Source
21 Apr 1977; 18 p; DE PATENT DOCUMENT 2546970/A/; Also available from Dt. Patentamt, Muenchen (FRG)
Record Type
Patent
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