Measuring transducer of the vibration type as well as measuring system formed therewith

摘要

A measuring transducer comprises: a housing, with an inlet-side flow divider having four flow openings, and an outlet-side end having four flow openings; a tube arrangement having four tubes connected to the flow dividers; and a first coupling element. An exciter mechanism for producing and/or maintaining mechanical oscillations of the four measuring tubes. The first coupling element includes a deformation body and four connecting struts, of which connected with a first strut end and with the first measuring tube, a second connecting strut is connected with a first strut end and with a second strut end with the second measuring tube, a third connecting strut and with a second strut end with the first measuring tube, and a fourth connecting strut is connected with a first strut end and with a second strut end with the fourth measuring tube.

主权项

1. A measuring transducer of the vibration type for registering at least one physical, measured variable of a flowable medium conveyed in a pipeline and/or for producing Coriolis forces serving for registering a mass flow rate of a flowable medium conveyed in a pipeline, said measuring transducer comprising:
a transducer housing, of which an inlet-side, first housing end is formed by means of an inlet-side, first flow divider including exactly four, mutually spaced apart flow openings and an outlet-side, second housing end formed by means of an outlet-side, second flow divider including exactly four, mutually spaced apart flow openings; a tube arrangement including four curved or bent measuring tubes, which are connected to said flow dividers for guiding flowing medium along flow paths connected in parallel, of which 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; a first coupling element of a first type, which is spaced apart both from said first flow divider as well as also from said second flow divider, which is affixed on each of said four measuring tubes and which serves for setting eigenfrequencies of natural oscillation modes of the tube arrangement; an electro-mechanical exciter mechanism for producing and/or maintaining bending oscillations each of said four measuring tubes; wherein said first and second flow dividers are embodied and arranged in the measuring transducer in such a manner, that an imaginary first connecting axis of the measuring transducer imaginarily connecting said first flow opening of said first flow divider with said first flow opening of said second flow divider extends parallel to an imaginary second connecting axis of the measuring transducer imaginarily connecting the second flow opening of said first flow divider with said second flow opening of said second flow divider, and that a imaginary third connecting axis of the measuring transducer imaginarily connecting said third flow opening of said first flow divider with said third flow opening of said second flow divider extends parallel to an imaginary fourth connecting axis of the measuring transducer imaginarily connecting said fourth flow opening of said first flow divider with said fourth flow opening of said second flow divider, wherein the measuring tubes are embodied and arranged in such a manner, that the tube arrangement exhibits a first imaginary longitudinal section plane extending both between said first measuring tube and said third measuring tube, as well as also between said second measuring tube and said fourth measuring tube, and that the tube arrangement exhibits a second imaginary longitudinal section plane perpendicular to its imaginary first longitudinal section plane and extending both between said first measuring tube and said second measuring tube as well as also between said third measuring tube and said fourth measuring tube, wherein: said first coupling element of the first type includes a deformation body as well as four connecting struts, of which a first connecting strut is connected with a first strut end with the deformation body, and with a second strut end with said first measuring tube, a second connecting strut is connected with a first strut end with the deformation body and with a second strut end with said second measuring tube, a third connecting strut is connected with a first strut end with the deformation body and with a second strut end with said first measuring tube, and a fourth connecting strut is connected with a first strut end with the deformation body and with a second strut end with said fourth measuring tube.