This system is a new generation of power system dedicated gas chromatography system for the power industry. It adopts advanced computer control system and large-screen display, which is in strict accordance with three detector flow recommended by GB/T17623-1998 "Determination Of Componental Contents Of Gases Dissolved In Insulating Oil By Gas Chromatography Method", GB/T7252-2001 Guide To The Analysis And The Diagnosis Of Gases Dissolved In Transformer Oil. It’s equipped with thermal conductivity detector, dual hydrogen flame detector and nickel converter. 7 or 9 kinds of gas components in oil sample can be achieved with automatic total analysis at a time.