What are the key parameters measured in dissolved gas analysis of transformer oil?

Key gases include hydrogen (H2), methane (CH4), ethylene (C2H4), acetylene (C2H2), and carbon monoxide (CO). Their concentrations indicate overheating, arcing, or insulation breakdown. Fluidex DGA-compatible systems include sealed sampling valves, which prevent external contamination before sending oil to the lab. This ensures accurate fault interpretation and helps determine if the transformer requires intervention.