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Model 4003 facilitates the analysis of transformer oil gases in support of ASTM D3612-02, Method A, utilizing a dual-channel flame ionization and thermal conductivity detector (FID/TCD). The purged sampling-valve housing and passivated tubing ensures less sample absorption, while the injection port and gas sampling valve offer flexibility for the introduction of various sample types. A high capacity methanizer for maximum CO and CO₂ conversion is featured on this instrument to ensure productivity and accuracy of each analysis. Detection limits on the TCD channel are 1 ppm for H2 and 500 ppm for oxygen and nitrogen, and the FID channel offers a detection limit of 2 for acetylene, and 1ppm for carbon dioxide, carbon monoxide, methane, ethane and ethylene.