Measuring head for diagnostic instruments and method
作者： Jürgen Reinstädtler
DOI:
关键词:
摘要: This invention relates to a measuring head (1) which comprises an intake (14), outlet (21), mouthpiece (19) and electrically controlled proportional valve (10; 22). The (14) may be connected pressurized gas reservoir (4). (21) releases exhaled excess into the ambient (5). A provides subject (2) accepts from (2). controlled, 22) is pneumatically between said for controlling flow (21). further method
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