The treatment of a gas sample consists of eliminating water or other liquids or gases contained in the sample stream

The separator allows for separation of liquid and gas phases.
The condenser allows for the cooling of the gas to the point of condensing certain elements which are then removed as a liquid.
The demister stops entrained droplets formed in the condenser but carried over by the gas flow.
The buffer serves to eliminating a specific component in the stream by an absorbant installed in the chamber.
The vortex supplies cooling capacity to the condenser using compressed instrument air.  Available in ATEX versions.

Separator

Condenser

Demister

Buffer/Demister

Vortex