Abstract: In accordance with one embodiment of the present invention, a probe assembly comprising a flange assembly, a probe platform, a platform extension, an extension enclosure, and a fluid coupling assembly is provided. The fluid coupling assembly comprises a removable portion and a retained portion. An engaging interface of the retained portion cooperates with an engaging interface of the removable portion such that, with engagement of the removable and retained portions, respective fluid passages of the removable and retained portions form one or more integrated fluid channels configured to permit passage of fluid through the fluid coupling assembly. The probe assembly is configured such that the probe platform, the platform extension, and the removable portion of the fluid coupling assembly are interconnected and are configured to be withdrawn simultaneously from the probe assembly independent of the retained portion of the fluid coupling assembly.

Abstract: In accordance with one embodiment of the present invention, a probe assembly comprising a flange assembly, a probe platform, a platform extension, an extension enclosure, and a fluid coupling assembly is provided. The fluid coupling assembly comprises a removable portion and a retained portion. An engaging interface of the retained portion cooperates with an engaging interface of the removable portion such that, with engagement of the removable and retained portions, respective fluid passages of the removable and retained portions form one or more integrated fluid channels configured to permit passage of fluid through the fluid coupling assembly. The probe assembly is configured such that the probe platform, the platform extension, and the removable portion of the fluid coupling assembly are interconnected and are configured to be withdrawn simultaneously from the probe assembly independent of the retained portion of the fluid coupling assembly.

Abstract: In accordance with one embodiment of the present invention, an apparatus for separating a particulate-containing gas flow into particulate and substantially non-particulate flow portions is provided. The apparatus comprises a sample gas inlet, a radial separating ring, a separation draw, a separated gas outlet, a bypass eductor, and a bypass gas outlet. The radial separating ring comprises a separating ring gap defined between an inlet ring orifice and an outlet ring orifice, and is positioned such that a sample gas flow moving downstream from the sample gas inlet through the bypass eductor to the bypass gas outlet passes across the separating ring gap. The radial separating ring is configured such that the inlet ring orifice and the outlet ring orifice are relatively large, in relation to the size of the separating ring gap, and are positioned in close proximity to each other along the direction of the sample gas flow.