NTT DIAGNOSTICS FOR MINERAL OIL

Interpretative or Key Gas Method
Useful if no measured previous dissolved gas history is available. The data is compared to the majority of transformers. Flag limits indicated here are established by NTT and utilitized on NTT reports. Customers can establish different flag limits on our reporting software.

Enter PPM values

Hydrogen H2

Methane CH4

Ethane C2H6

Ethylene C2H4

Acetylene C2H2

Carbon Monoxide CO

Carbon Dioxide CO2

Nitrogen N2

Oxygen O2

Gas Limits and Diagnostics

Hydrogen

Methane

Ethane

Ethylene

Acetylene

Carbon Monoxide

Carbon Dioxide

Total Combustile Gas ppm

Total Gas ppm

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