Accumulation test

Leakage test where a tracer gas is collected in a known volume over a specified period of time and the partial pressure (3.2.2) increase of the tracer gas is measured
Note 1 to entry: The leakage rate can be obtained by calibrating the partial pressure rise with that due to a known leak or comparing the measured concentration (3.1.1) with a known concentration.
ISO 20484:2017(E)

Накопления пробного газа при атмосферном давлении способ (3.4.12)

ГОСТ Р «Контроль неразрушающий. Течеискание. Термины и определения»