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. The moment of gas bubble appearance is detected with a microphone, which is the initial operation of the measurement process.

EFFECT: improved accuracy of item leakage measurement by creation of a sequence of operations, making it possible to unambiguously determine leakage of tested items at the specified tested pressure under various conditions of environment with different properties of liquid in a bubble chamber, regardless of drainage tube design.

1 dwg