FIELD: measurement technology. SUBSTANCE: air from source of excessive pressure is passed through two tubes brought into controlled flow of dust suspension in opposition. Temperature of gas in gas conduit, pressure in outlet section of each tube are measured and flow rate of dust suspension is found by mathematical expression given in formula of invention. Invention provides for increased accuracy while measuring low- concentration flows ( 05-40.0 g/cu m ). EFFECT: increased measurement accuracy. 1 dwg
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