Unit simple, sensitive, rugged, and reliable. Diaphragmless microphone detects leaks from small boiler tubes. Porous plug retains carbon granules in tube while allowing pressure changes to penetrate to granules. Has greater life expectancy than previous controllers and used in variety of hot corrosive atmospheres.
Microphone Detects Boiler-Tube Leaks
NASA Tech Briefs ; 8 , 4
1985-04-01
Miscellaneous
No indication
English
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