FIELD: measurement technology. SUBSTANCE: device has measuring part of pipe-line 1, channel 2 with broadening, cylindrical rotor 3, channel branches 4. Holes 5 for bleeding-off pressure are made at the walls of measuring part of the pipe-line. Device also has pipes 6, differential manometer 7, electric drive 8, velocity-type transducer 9, computational unit 10. EFFECT: improved precision of measuring. 1 dwg
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