Patent ID: 7743641

Claim:
A gas chromatograph for analyzing gas, the gas chromatograph comprising: (a.) an explosion-proof housing defining a single enclosed volume, the housing being elongated and having a longitudinal axis extending through opposing first and second ends of the housing; (b.) a display screen disposed in the single enclosed volume of the housing and visible from the exterior of the housing; (c.) a gas chromatograph (GC) assembly disposed in the single enclosed volume of the housing, the GC assembly comprising: a separation device operable to separate components of the gas; a detector for detecting the components of the gas; and a sample injection valve operable to inject the gas into the separation device; and (d.) a sample selection valve operable to control flow of the gas to the sample injection valve, the sample selection valve being disposed in the single enclosed volume of the housing; (e.) a transparent panel fastened to the housing at the first end, the display screen being visible through the transparent panel; wherein the housing comprises a body having an access opening formed therein and a cover removably disposed over the access opening, the cover forming the first end of the housing and the transparent panel being fastened to the cover; and wherein the GC assembly may be removed as a single unit from the housing through the access opening when the cover is removed from the body.