IRON_LUNG_AIR_INTAKE_CONTROL

Published:2009/7/20 21:03:00 Author:Jessie | From:SeekIC

Air exhaled by patient is sampled and analyzed for carbon dioxide concentration by commercial infrared analyzer that provides electrical output proportional to amount of carbon dioxide. Analyzer output charges C2 to level dependent on carbon dioxide concentration. Comparison circuit controls relays K2 and K3 so iron lung bleeder valve keeps concentration within preset limits. V5, V6, and K2 establish upper limitV7, other half of V6, and K3 establish lower limit.-Control Regulates Iron Lung, Electronics, 31:41, p 108.



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