Patent ID: 7281404
Filing Date: 2007-10-16
Classification: G01N

Abstract:
1. An apparatus for providing a test gas to a gas monitoring instrument, which instrument includes a rigid housing containing at least one gas sensor, and which rigid housing further includes in an exterior face an aperture therethrough providing a window for admitting gas through the aperture to the at least one sensor, comprising: a generally cup shaped mechanical adaptor open at a portion thereof and having walls surrounding the open portion which are constructed and arranged such that the mechanical adaptor removably fits over the window with the open portion disposed over the window to form a substantially gas tight chamber of predefined volume defined by the walls of the mechanical adaptor and the face of the instrument; and means disposed in said mechanical adaptor for receiving at least one miniature vial of test gas externally to the substantially gas tight chamber formed with said mechanical adaptor in place, and means for breaking a seal in the vial to admit the test gas to the substantially gas tight chamber.