LIQUID LEVEL GAUGE Russian patent published in 2009 - IPC G01F23/68 G01F23/72 

FIELD: physics.

SUBSTANCE: liquid level gauge has a first measuring tube with a first float freely moving on its length and a second measuring tube with a second float freely moving on its length. The first and second floats are in form of tori made from material with specific weight less than that of lightest liquid, for example water and fuel oil - from foam plastic. The second float has weighting elements. Permanent magnets are placed inside the floats. The floats can move on the outer surface of the first and second measuring tubes, respectively, which are made from non-magnetic corrosion-resistant material, for example stainless steel. Magnetosensitive elements, for example hermetic contacts, are placed on a board inside each measuring tube with equal spacing along its length. The hermetic contacts are connected to a unit for determining level of liquids.

EFFECT: wider functional capabilities due to possibility of measuring level of petroleum products, possibility of using for measuring level of liquid of the top layer relative the bottom layer with different density.

2 cl, 2 dwg