A DGA report PDF typically includes sampling details, test method references, gas concentrations in ppm for key gases, calculated ratios, and interpretation notes or severity codes. Many reports include total dissolved combustible gas, trending plots, and recommended actions such as resampling intervals or further diagnostics. DGA methods are commonly aligned with standards like ASTM D3612, which defines approaches for extracting and measuring dissolved gases. Good reports also document chain of custody, sample condition, and any limitations, because sampling errors can mimic fault signals.
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