METHOD FOR MEASURING A GASEOUS MICROFLOW AND DEVICE FOR CARRYING OUT SAID METHOD

摘要

The invention relates to the accurate measurement of a gaseous microflow, for example for determining the overall leakage of reservoirs filled with a gas with positive pressure, for calibrating control leakage, a flow measurement for micromotors etc. The invention is based on the displacement of the pre-deweighted control liquid with the aid of the measured gaseous microflow through an orifice with a predetermined diameter embodied in the bottom part of the working chamber; also based on the fragmentation of the liquid into equiponderant drops, mass measurement, time of effusion of the drop and on the calculation of the value of flow with the disclosed formula . The invention increases the accuracy of measurement of the gaseous microflow, the sensivity and reliability of the device and expands the range of measurement thereof.