Patent ID: 7296484
Filing Date: 2007-11-20
Classification: G01F,G01N

Abstract:
1. An inline measuring device for the measurement of at least one physical, measured quantity of a medium guided in a pipeline, said inline measuring device comprising: a vibratory-type measurement pickup; and measuring device electronics electrically coupled with said vibratory-type measurement pickup, wherein said measurement pickup includes: at least one essentially straight measuring tube inserted into the course of the pipeline, said measuring tube serving to guide the medium to be measured; an exciter arrangement acting on said at least one measuring tube for causing said at least one measuring tube to vibrate, said exciter arrangement causing the measuring tube to vibrate at least at times with lateral bending oscillations, and to vibrate at least at times with torsional oscillations about an imaginary measuring tube longitudinal axis essentially aligned with said at least one measuring tube; and a sensor arrangement for registering vibrations of said at least one measuring tube and for delivering at least one oscillation measurement signal representing oscillations of said measuring tube; further wherein: said measuring device electronics delivers, at least at times, an exciter current driving the exciter arrangement, and determines a first intermediate value, which corresponds to a lateral current component of the exciter current serving to maintain lateral oscillations of the measuring tube, and a second intermediate value, which corresponds to a torsional current component of the exciter current serving to maintain torsional oscillations of the measuring tube; and said measuring device electronics uses said first and the second intermediate values for generating at least one measured value, which represents at least one physical quantity of the medium to be measured.