Which one of these is not a monitoring and diagnostic test for transformer oil?

• A. Dissolved Metals Analysis
• B. Furanic Compound Analysis
• C. Dissolved Gas Analysis
• D. Volatility Level Analysis

Answer: (D)

Volatility is a statistical measure of the dispersion of returns for a given security or market index.
Analysis of a mineral oil sample for volatile compounds provides an indication of whether a fault or significant degradation has occurred.