PRODUCT LEAKAGE MEASURING DEVICE Russian patent published in 2013 - IPC G01M3/06 

FIELD: test equipment.

SUBSTANCE: device includes a bubble chamber, a drain tube, connection tubes, shutoff valves, a test chamber for arrangement of a tested product, a standard capacity with pressure and temperature sensors, a microphone, a comparator, electronic switches and switchgears, a pulser, a calculator, adders, timers, units of setpoints and comparison and other electronic elements. At the first stage of the leakage test, weight of gas in one bubble is determined, and then, at the second stage, after test gas is supplied to the tested product, by means of timers, setting device of the number of bubbles and comparison units there determined is weight value of leak of the tested product. The moment of gas bubble occurrence is determined with a microphone included in the primary part of the measuring circuit.

EFFECT: improving the accuracy of determination of low gas leaks of tested products.

1 dwg