Vibronic-type transducer for a fluid flowing through a pipe, said transducer comprising: - a measuring tube inserted in the course of the pipe, and vibrating at least temporarily during operation, designed to conduct the fluid - a first support element fixed at an inlet end and at an outlet end of the measuring tube, - an electromagnetic exciter arrangement designed to generate an exciter force, F exc, which varies over time, to make the measuring tube vibrate, - a sensor arrangement designed to measure the vibrations of the measuring tube, as well as - a coupler arrangement, connected to the measuring tube and support element, with at least one coupling element that interacts mechanically, particularly in a spring-elastic manner, with the vibrating measuring tube and the support element, - wherein, during operation, the measuring tube is excited to a vibration mode at least temporarily by the exciter arrangement, wherein in said mode it at least partially executes such flexural vibrations around an axis of vibration connecting the inlet end and the outlet end of the measuring tube in an imaginary manner that it essentially adopts a vibration form with at least three flexural vibration antinodes, - wherein the at least one coupling element of the coupler arrangement is mechanically coupled to the measuring tube and the support element in such a way that it acts on the measuring tube in an area, particularly a central area, of one of the at least three antinodes, - wherein the measuring tube is essentially straight, and - wherein a spring rigidity, c 60, of the coupler arrangement, which is determined by the at least one coupling element and acts between the measuring tube and the support element, notably an essentially constant spring rigidity, is more than 0.5 times, notably in the range of 0.7 to 1.3 times, a ratio Q 10 /x 0 that represents a transversal force, Q 10, which is introduced by the vibrating measuring tube at the inlet side and the outlet side into the carrier element and/or into the connected pipe overall, in relation to a lateral deviation X 10 of a point of attack at which the coupler arrangement acts on the measuring tube, in such a way that the spring rigidity c 60 of the coupler arrangement is set to at least 10 times, notably to around 20 times, a spring rigidity c 10 of the measuring tube that acts in the direction of action of the transverse force, Q 10, of the measuring tube. - a measuring tube inserted in the course of the pipe, and vibrating at least temporarily during operation, designed to conduct the fluid - a first support element fixed at an inlet end and at an outlet end of the measuring tube, - an electromagnetic exciter arrangement designed to generate an exciter force, F exc, which varies over time, to make the measuring tube vibrate, - a sensor arrangement designed to measure the vibrations of the measuring tube, as well as - a coupler arrangement, connected to the measuring tube and support element, with at least one coupling element that interacts mechanically, particularly in a spring-elastic manner, with the vibrating measuring tube and the support element, - wherein, during operation, the measuring tube is excited to a vibration mode at least temporarily by the exciter arrangement, wherein in said mode it at least partially executes such flexural vibrations around an axis of vibration connecting the inlet end and the outlet end of the measuring tube in an imaginary manner that it essentially adopts a vibration form with at least three flexural vibration antinodes, - wherein the at least one coupling element of the coupler arrangement is mechanically coupled to the measuring tube and the support element in such a way that it acts on the measuring tube in an area, particularly a central area, of one of the at least three antinodes, - wherein the measuring tube is essentially straight, and - wherein a spring rigidity, c 60, of the coupler arrangement, which is determined by the at least one coupling element and acts between the measuring tube and the support element, notably an essentially constant spring rigidity, is more than 0.5 times, notably in the range of 0.7 to 1.3 times, a ratio Q 10 /x 0 that represents a transversal force, Q 10, which is introduced by the vibrating measuring tube at the inlet side and the outlet side into the carrier element and/or into the connected pipe overall, in relation to a lateral deviation X 10 of a point of attack at which the coupler arrangement acts on the measuring tube, in such a way that the spring rigidity c 60 of the coupler arrangement is set to at least 10 times, notably to around 20 times, a spring rigidity c 10 of the measuring tube that acts in the direction of action of the transverse force, Q 10, of the measuring tube.