FIELD: process engineering.
SUBSTANCE: invention relates to tightness tests and can be used for performing tightness tests for filer (2) intended for removal of aerosols and dust from gas volume flow. Loader (16) feeds test aerosol upstream of filter (9) to unpurified gas flow if seen in flow direction. Quantity of particles is measured and/or concentration of particles are defined, is seen in flow direction, in gas purified flow downstream of filter (9). Note here that first mixed volume flow of test aerosol and compressed air is fed into said loader (16) that makes an aerosol generator (37). First mixed flow produced with the help of aerosol generator (37) is mixed with volume air flow to produce second mixed volume flow of higher rarefaction. Produced second mixed volume flow is fed into loader (16).
EFFECT: minimised compressed air flow rate.
12 cl, 5 dwg
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