Patent ID: 7275411
Filing Date: 2007-10-02
Classification: G01N

Abstract:
1. An apparatus for providing a test gas to a gas monitoring instrument, which instrument includes a rigid housing that contains at least one gas sensor, and which includes in an exterior face of the rigid housing an aperture therethrough providing a window for admitting gas through the aperture and to the at least one gas sensor therein, comprising: a generally cup shaped mechanical adaptor open at a portion thereof and having walls surrounding the open portion which are adapted to the gas monitoring instrument 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 a miniature vial of test gas externally to said substantially gas tight chamber with the mechanical adaptor in place, and means for breaking a seal in the vial to admit the test gas to the substantially gas tight chamber.