Patent ID: 7703344
Filing Date: 2010-04-27
Classification: G01N

Abstract:
1. A detector comprising: a housing with at least one ingress port for ambient atmosphere extending through a wall of the housing and a hollow sampling tube detachably coupled to the housing; said at least one ingress port having a first latch; the hollow sampling tube comprising a hollow coupling element and a hollow, elongated ambient atmosphere receiving conduit; said coupling element has a second latch; a first end of the coupling element is slidably received in said at least one ingress port and into said housing along an axis of insertion into the port, with at least one predetermined fixed orientation; and the conduit is removably attached to a second end of the coupling element without extending through the coupling element, said coupling extends only from said second end of the coupling element; wherein opposing surfaces of the coupling element and port lying parallel to the axis of insertion each have at least one flattened area that engage during coupling to align the coupling element and port into the at least one predetermined fixed orientation and wherein during use the coupling element is removable from the ingress port by hand without tools for cleaning.