| 摘要 |
<p>The plethysmograph is for examination of the lung function of subjects, having an air tight sealable chamber within which the subject is seated. A pressure measurement device (18) operates through a normalisation device (20). The transform or transmission ability of the normalisation device (20) can be reproducibly adjusted by means of one hand operated adjustment device (22). The transmission system is coupled to an indicator device (24) which indicates the normalised output signal produced by the pressure measurement device (18).</p> |
