EXCITATION CIRCUIT AND METHOD EXCITING VIBRATIONS IN TUBE OF METER WITH VIBRATING TUBE Russian patent published in 2003 - IPC

FIELD: measurement technology. SUBSTANCE: L signals of motion from L transmitters linked to tube of Coriolis flowmeter or density meter set in vibration by M exciters ( M and L are integral numbers over 1 ). Signals are filtered in multichannel filter of circuit generating N signals of reaction of mode of vibration. Each of N signals presents value of vibration of tube under one mode from set of various modes and is processed in corresponding channel of excitation controller of circuit for generation of excitation signal of vibration mode. Obtained signals are converted to M excitation signals going to M exciters. EFFECT: invention ensures possibility of control over excitation of flowmeter tube to generate sought-for mode of vibrations. 21 cl, 12 dwg