ATMI sells devices that enable the measurement of the level of liquids in cisterns or tanks and the level of solids like grain, powder, animal food in silos or containers.
They have a very simple functioning. When, the level of liquid or solid is too high and has reached the high level tilt level switch, it will tilt and thanks to a contact with an electrical panel, it will stop the filling of the silo or the tank. The principle is exactly the same when the quantity of liquid or solid has decreased and has reached the low defined level: indeed, it will start the filling thanks to a contact with the electrical panel.
To a safer liquids or solids level measurement, ATMI suggests you to use some essential accessories.