FIELD: measurement of mass flow rate in main oil and gas pipe-lines. SUBSTANCE: flowmeter includes flow transducer incorporating source of fast neutrons and two detectors of slow neutrons and computer connected to detectors. Transducer is positioned on outer surface of measurement section of pipe-line located on ground surface and oriented with respect to meridian at angle different from 90 deg for generation of Coriolis acceleration. EFFECT: high authenticity of measurements due to decreased number of used equipment. 2 dwg
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