VIBRATION TYPE MEASURING CONVERTER, CORIOLIS MASS FLOWMETER AND METHOD OF OPERATION OF MEASURING CONVERTER Russian patent published in 2007 - IPC G01F1/84 

FIELD: measuring converter.

SUBSTANCE: measuring converter has case and internal part suspended inside case by means of torsion vibrators disposed at side of inlet and outlet of case. Any torsion vibrator has branch pipe fastened to case, and communication member attached to branch pipe. Internal part has measuring tube connected with pipeline through branch pipes of torsion vibrators, counter-vibrator mechanically connected with measuring tube at excitation frequency f_exc and sensor unit for registration of measuring tube's oscillations. Mode of initial torsion oscillations of torsion vibrator, disposed at side of inlet, has frequency f₁ which no higher than f_exc, and mode of initial torsion oscillations of torsion vibrator, disposed at side of outlet, has frequency f₂ which equals in essential to f₁. Measuring converter is well balanced at working condition for wide range of fluid density.

EFFECT: improved precision of measurement.

21 cl, 5 dwg