| 摘要 |
A filter assembly (10, 38, 50, 70, 80, 90) for use in sidestream gas sampling assembly (1). The filter assembly of the present invention includes a hydrophilic liner (20, 20', 54) lining the inner perimeter of a housing (12, 12', 52, 72, 82) for wicking moisture from the gases to be monitored prior to the gases reaching a sensing mechanism. The filter further includes a hydrophobic member (22, 22', 56) positioned downstream of the hydrophilic liner. In one embodiment, the filter further include an absorbent layer (40) positioned between the cylindrical housing and the hydrophilic layer to aid in wicking moisture from the gas stream. In a further embodiment, the hydrophobic member is eliminated and the hydrophilic member is situated such that gas entering the filter assembly must pass through at least a portion the hydrophilic member. |
