Perma Pure iCOOL - Manual (Page 7)

Section C: Principle of Operation 7
lowers the sample dew point below 4
o
C (39.2
°
F). As the gas cools and the moisture
vapor condenses, the condensate exits the heat exchanger through the bottom drain
connection. Particulate matter which passes through the sample cooler is removed
by an optional pre-filter, located downstream from the cooler along with an optional
water slip sensor. The conditioned sample gas can then be directed to the gas
analyzers.