The machine is equipped with an automatic switching valve, a high-sensitivity thermal conductivity detector, a hydrogen flame ionization detector, and a nickel catalyst converter, which can achieve the determination of all 9 gas components dissolved in transformer oil: hydrogen, oxygen, nitrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane, and acetylene in one injection. Its performance meets the requirements for gas chromatography in the above standards.

The newly designed new generation high-performance gas chromatograph GC-8890, which meets the standards GB/T7252-2001 "Guidelines for Analysis and Determination of Dissolved Gases in Transformer Oil", GB/T17632-1998 "Gas Chromatography Method for Determination of Gas Content in Insulation Oil", and DL/T722-2000 "Guidelines for Analysis and Determination of Dissolved Gases in Transformer Oil", adopts a process of one-time injection and automatic valve cutting for gas content in power systems, equipped with TCD detector and FID detector. Among them, H2, O2, and N2 are detected by TCD; CO, CO2, CH4, C2H4, C2H6, C2H2 are detected by FID.

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