Abstract: The present invention provides a sampling apparatus for taking a representative gas sample from a flowing gas stream. The sampling apparatus can be positioned within a conduit carrying a gas stream, such as a gas line or smoke stack. Preferably, the sampling apparatus comprises a cylindrical collection tube having collection wings radially projecting therefrom. It is further preferred that the bottom edges of the collection wings contain at least one elongate collection opening, through which a representative gas sample enters the sampling apparatus. In particular embodiments of the invention, the sampling apparatus further comprises an electronic sensor positioned within the collection tube. Alternatively, the sensing device is located at a site remote from the collection tube and is connected thereto by a connecting hose.