Disclosed is a process of supplying a gaseous fuel from a fuel storage vessel to a secondary device. The identification of an unknown material is accomplished by correlating the sample’s multi-ordered spectrum against all or a portion of the spectrum in the library, and finding the closest match. As a result, a frictional, tight connection of the tubular body with the sleeve is possible. A control, including an air filter analyzer, determines a need for an air filter change based on the sensed parameter. A second metal layer is formed by providing second metal material over the second interlayer insulating layer and filling the trenches.