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 do not remain uncovered.
ETI series IL level gauges have been designed to carry out these tasks.
ETI level gauges are individually calibrated for each tank.
Full 16 page ETI catalogue is available here … ETI oil level gauges
ETI gauges are made to order and each dial is printed to reflect the specific temperature and oil level characteristics of the conservator.
Eight page ORDERING specification is available here … ETO oil level order specs