Patent ID: 7017424
Filing Date: 2006-03-28
Classification: G01F,G01N

Abstract:
1. A vibratory transducer for a fluid flowing in a pipe, the transducer comprising: a flow tube for conducting the fluid, said flow tube vibrates in operation and said flow tube communicating with the pipe via an inlet tube section, ending in an inlet end of the flow tube, and via an outlet tube section, ending in an outlet end of the flow tube; an excitation assembly acting on the flow tube for vibrating the flow tube, a sensor arrangement for sensing vibrations of the flow tube; and a torsional vibration absorber which is fixed to the flow tube wherein in operation the flow tube performs, at least intermittently, torsional vibrations about a longitudinal flow-tube axis at an instantaneous torsional frequency, f.sub.excT; and wherein in operation the torsional vibration absorber vibrates, at least partially, out of phase with the torsionally vibrating flow tube.