Fire-detector installations for ships; WALTHER combined optical and acoustic system; in BETZLER system, which is development of Walther, acoustic alarms operated by photoelectric-cell devices are incorporated; various types of cell described; system enables not only presence of smoke to be detected by behavior of common header, but also immediately registers individual line from which smoke is emanating. (English translation) (See also Schiffbau v 34 n 8 Apr 15 1933 p 156-9)
Ueber Rauchmeldeanlagen auf Schiffen
Ueber Rauchmeldeanlagen auf Schiffen
Marine Engineer and Motorship Builder ; 56 , n 668
1933
Article (Journal)
English
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