ISOLATED GAS SENSOR CONFIGURATION

摘要

A gas sensor assembly (10) detects a constituent in a gaseous stream. The assembly comprises: (a) a mounting surface, (15) (b) a sensor (22) mounted on the mounting surface (15) and sensor (22) capable of generating a detectable signal in the presence of the constituent, and (c) an enclosing structure (30). The enclosing structure(30) comprises: (i) a walled component (32) having a pair of vertically spaced ends and mounted at one end on the mounting surface (15) so as to circumscribe the sensor (22), and (ii) a gas-permeable membrane (34) attached at the other end of the walled component (32), thereby defining an interior volume within said enclosing structure. Flowing the gaseous stream across the membrane (34) infuses a portion of the gaseous stream into said interior volume containing the sensor (22).