Electro-Pneumatic systems can be used for measuring levels and filling rates in all types of tanks such as fuel oil, lubrication oil, sludge oil, bilge, fresh water and ballast water tanks. The principle of Electro-Pneumatic system and its advantage is that precision type pressure sensors are installed in one or several cabinets in the Engine Control Room. Sensors measure back pressure of the constant air flow blowing trough the measuring pipe into the tank. This pressure is compared with atmospheric pressure and calculated to the hydrostatic level.
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