When is a heat and moisture exchanger (HME) performing well?
a. Condensate appears in the attached flex tube.
b. No condensate is visible on the filter or insert.
c. The HME temperature is at least 40° C.
d. Condensate is visible on the filter or insert.
ANS: A
Lacking direct measurement of humidity, observation of this minimal condensate is the most re-liable indicator that the gas is fully saturated at the specified temperature.
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