It is necessary to measure the level reached by the oil in a transformer conservator in order to:

• Check that the transformer has been filled with the correct quantity of oil when prepared for use;
• Make sure that no oil spills occur during normal operation due to excessive filling or overheating;
• Indicate that there is insufficient oil before the Buccholz relay trips so that the upper part of the windings does not remain uncovered.

ETI-Oil Level Gauge - Series IL

Precimeasure – Type MOG