FIELD: obtaining precision information on mass flow rate and density . SUBSTANCE: oscillations of flowmeter tubes are excited in two modes of flexural oscillations and in mode of flexural-and- torsional oscillations. Relationship of main frequencies at which flowmeter tubes are oscillated in each of two modes of oscillations is proportional to pressure inside flowmeter tubes. In processing the frequency signals, use is made of digital rejection and band-pass filters. EFFECT: facilitated procedure of measurement of pressure; enhanced accuracy of measurement due to use of obtained pressure as correction signal. 20 cl, 14 dwg
