FIELD: analytical instrument making.
SUBSTANCE: source of vapours of a substance to be analysed is placed inside a vessel to create the conditions of a linear increase of the substance vapour concentration therein. The gas analyser with an initiator of the flow rate to be tested is connected, by its inlet and outlet, to the said vessel, a time interval between two various gas analyser readouts is measured, and the measured time interval is compared to the preset reference time interval.
EFFECT: no need in determination of the substance vapour concentration in vapour-gas mix passed through the gas analyser, hence, simpler procedure.
7 cl, 2 dwg
