水平：潤滑油和液壓液

Generators and gas turbines will have integral lubricating systems to prevent damage caused by excessive friction. Often a portion of the lubricating oil is used in the hydraulic oil systems for hydraulic control devices. Lubricating oil is typically stored in integral stainless steel and carbon steel tanks that are monitored for level. A generator gearbox lube oil system may have a reservoir with a capacity of 3,000 gallons and a turbine oil system may have a reservoir with a capacity of 150 gallons.

Level monitoring of lubrication oil tank reservoirs will ensure the proper functioning of turbines, electrical generators and other equipment with integral lubrication systems.