Coriolis mass flow and density meter

A Coriolis mass flow and density meter, comprising:

• at least one first oscillatory measuring tube configured to guide a medium;
• at least one support body, wherein the at least one first measuring tube is connected to the at least one support body on an inlet side and on an outlet side;
• at least one exciter configured to excite at least one bending vibration mode of the at least one first measuring tube;
• at least two vibration sensors configured to detect vibrations of the at least one first measuring tube;
• at least one first reinforcing body fastened to a lateral surface of the at least one first measuring tube and surrounding the at least one first measuring tube;
• and
• a measuring and operating circuit configured to drive the at least one exciter, to detect signals from the at least two vibration sensors, and to determine a mass flow rate measurement value and/or a density measurement value depending on the signals from the at least two vibration sensors,
• wherein the at least one first reinforcing body has, at least in sections, a helical profile including a plurality of windings, wherein a distance between two adjacent windings of the at least one first reinforcing body is not less than twice a material thickness of the at least one first reinforcing body in a region of the windings,
• wherein the measuring and operating circuit is configured to determine the density measurement value using a natural frequency of a bending vibration mode of the at least one first measuring tube, the natural frequency having a low pressure dependence such that a pressure-dependent deviation of the density measurement value from an actual density of the medium guided in the measuring tube has a pressure dependence not more than 100 ppm/bar.