Which of the following is true concerning the Stead-Wells spirometer?
A) Counterweights are necessary.
B) The pen and bell move in opposite directions.
C) The pen recorder is attached directly to the bell.
D) On exhalation, the bell and pen move downward.

Question

Quizplus · Accepted Answer

The pen recorder for the Stead-Wells spirometer is attached directly to the bell,so as the bell moves upward during exhalation,the pen also moves upward.

Which of the Following Is True Concerning the Stead-Wells Spirometer