Clean and maintain the level gauges.
The level indicators are the best allies of the technicians to know the amount of oil in each of the industrial machines. That is why the cleaning and maintenance of these elements are of enormous importance to have correct data.
 

In certain cases, the gauges predefined by the manufacturer often deteriorate or lack visibility when the glass darkens. The opacity of the reader could be due to the inside of the glass coming in contact with dirty oil or or the outside of the glass becoming contaminated with vapor or dust. 
 

In order to avoid wrong measurements, it is recommended to add sensors that complement the factory installed ones as 3D meters. They are windows that are not installed flush with the machine, but rather protrude from the structure, facilitating level reading from various angles. And as it is an instrument of greater visual precision for the measurement, it is not affected by the darkening of the oil.
 

Tip submitted by Delio Sanchez, Pequiven. Thanks, Delio!