Patent ID: 7168329

Claim:
A Coriolis flow meter comprising: flow tube means ( 102 ) adapted to receive a material flow; a driver coil; meter electronics ( 321 ) that applies a drive signal to said driver coil (D) to vibrate said flow tube means with material flow; said flow tube means vibration with material flow generates Coriolis deflections of said flow tube means; and pick-off means (LP 0 RP 0 ) coupled to said flow tube means for generating pick-off signals representing said Coriolis deflections of said flow tube means; and means ( 304 , 305 , 308 , 309 ) for applying said pick-off signals to said meter electronics for the generation of output signals representing said material flow; characterized in that: magnetic material ( 103 ) embodies at least a part of said flow tube means; said driver coil is responsive to said application of said drive signal to generate a magnetic field that interacts with said magnetic material to vibrate said material filled flow tube means.