OPERATING METHOD OF ONCE-THROUGH SINGLE-TUBE MASS FLOW METER, AND DEVICE FOR ITS IMPLEMENTATION

摘要

FIELD: measurement equipment.;SUBSTANCE: invention relates to measurement of mass flow rate of liquid by means of flow meters of a Coriolis type, and namely once-through single-tube mass flow meters. Each adapter assembly of the proposed device is equipped with quadrature adapters located in a quadrature plane perpendicular to the main one, which passes along the longitudinal axis of the tube, and an oscillation excitation assembly is provided with two magnets arranged in excitation coils of quadrature oscillations and located, fixed and connected to each other similar to quadrature adapters; in addition, an electronic unit includes a quadrature oscillation excitation unit and a unit of phase correction with the corresponding oscillation excitation unit and a phase correction unit; besides, in order to improve selectivity of adapter assemblies and excitation assemblies, which is required for operation of the phase correction unit, all the main and quadrature adapters and the main and quadrature coils of the oscillation excitation assembly are located symmetrically relative to the tube axis; besides, similar coils and adapters of the assemblies are connected in series.;EFFECT: creation of active counteraction to vibration influence.;4 cl, 5 dwg