Patent ID: 7628083

Claim:
A Coriolis flow meter comprising: a first flow tube ( 301 ) and a second flow tube ( 302 ) adapted to be vibrated in phase opposition about a plane of symmetry ( 708 ); a drive system (D) adapted to vibrate each flow tube about bending axes connecting end nodes of each flow tube; first vibrating components (D, LPO, RPO) including a first vibrating drive system component (C) affixed to said first flow tube; second vibrating components including second vibrating drive system component (M) affixed to said second flow tube; said first and second vibrating drive system components are of equivalent size and position such that the moments of inertia of said first flow tube plus said first vibrating drive system component are substantially equal to the moments of inertia of said second flow tube plus said second vibrating drive system component; characterized in that the bending axis (W′) of said first flow tube and the combined center of mass of said first flow tube plus said first vibrating drive system component (C) lie on a first balance plane parallel to said plane of symmetry; and the bending axis (W) of said second flow tube and the combined center of mass of said second flow tube plus said second vibrating drive system component (M) lie on a second balance plane parallel to said plane of symmetry.