Patent ID: 8333119
Filing Date: 2012-12-18
Classification: G01F,G01N

Abstract:
1. A measuring transducer of vibration-type for registering at least one physical, measured variable of a flowable medium guided in a pipeline and/or for producing Coriolis forces serving for registering a mass flow rate of a flowable medium, said measuring transducer comprising: a transducer housing, with an inlet side, first housing end of said transducer housing is formed by means of an inlet-side, first flow divider including four, mutually spaced, flow openings, and with an outlet side, second housing end of said transducer housing is formed by means of an outlet-side, second flow divider including four, mutually spaced, flow openings, said first flow divider including a flange for connecting the measuring transducer to a tubular segment of the pipeline serving for supplying medium to the measuring transducer and said second flow divider including a flange for connecting the measuring transducer to a tubular segment of the pipeline serving for removing medium from the measuring transducer, each of said flanges including respectively, a sealing surface for connecting of the measuring transducer with the corresponding tubular segment of the pipeline; four, straight, measuring tubes, which are connected to said flow dividers, for guiding flowing medium along flow paths connected in parallel, of which measuring tubes: a first measuring tube, opens with an inlet-side, first measuring tube end into a first flow opening of said first flow divider and with an outlet-side, second measuring tube end into a first flow opening of said second flow divider, a second measuring tube opens with an inlet-side, first measuring tube end into a second flow opening of said first flow divider and with an outlet-side, second measuring tube end into a second flow opening of said second flow divider, a third measuring tube opens with an inlet-side, first measuring tube end into a third flow opening of said first flow divider and with an outlet-side, second measuring tube end into a third flow opening of said second flow divider, and a fourth measuring tube opens with an inlet-side, first measuring tube end into a fourth flow opening of said first flow divider and with an outlet-side, second measuring tube end into a fourth flow opening of said second flow divider; and an electromechanical exciter mechanism for producing and/or maintaining mechanical oscillations of said four measuring tubes, said exciter mechanism embodied in such a manner, that therewith said first measuring tube and said second measuring tube are excitable, during operation, to execute opposite phase bending oscillations in a shared imaginary first plane of oscillation and said third measuring tube and said fourth measuring tube are excitable, during operation, to execute opposite phase bending oscillations in a shared imaginary, second plane of oscillation, wherein: a nominal diameter, D a distance between the sealing surfaces of both flanges defines an installed length, L each of said four measuring tubes shows a caliber, D