METHOD TO MEASURE LEAKAGE OF ITEMS Russian patent published in 2013 - IPC G01M3/06 

FIELD: testing equipment.

SUBSTANCE: leakage measurement is carried out in two stages: at the first stage the mass of a single bubble is determined, and at the second stage - the number of gas bubbles released from the tested item per unit of time, which with the available mass of one bubble characterises the value of the item leakage. Bubble appearance is determined by change in ohmic resistance of an electric circuit caused by passage of a gas bubble between two electrodes submerged into electroconductive liquid of a bubble chamber.

EFFECT: improved accuracy of item leakage measurement under various conditions of environment with different properties of liquid in a bubble chamber, regardless of drainage tube design.

1 dwg