Perma Pure eCOOL 5000 Series - Manual (Page 8)

Section C: Principle of Operation 8
The sample gas is passed to the thermo-electric cooler via the heated filter sample
probe and heated sample line. The thermo-electric cooler lowers the sample dew
point to 5
°
C (41
°
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 Perma Pure 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.