Vibronic-type transducer for the generation of vibration signals (si, s 2) corresponding to the parameters of a flowing medium, particularly a mass flow, a density and/or a viscosity, said transducer comprising: - a transducer housing with a first housing end (100+) and with a second housing end (100#); and - a tube arrangement extending inside the transducer housing from the first housing end to the second housing end, and wherein said tube arrangement is formed by at least two tubes, -- wherein of said tubes at least a first tube is designed as a measuring tube to guide a flowing medium, and -- wherein of said tubes a second tube is connected mechanically to the first tube using a first coupling element to form a first coupling zone (#11, #12) on the inlet side and using a second coupling element to form a second coupling zone (11#, 12#) on the outlet side; - wherein, in an area extending between the first and the second tube, the first coupling element has a slot which has at least one closed end, particularly formed as an elongated hole or as a straight longitudinal slot open at one side, with a maximum slot width and a maximum slot length which is greater than the maximum slot width, and a connection element which is located partially inside the slot and which is in contact with a slot edge encompassing said slot in such a way that the connection element mechanically couples peripheral zones (251', 251") of the slot edge, said zones being opposite one another and/or distanced from the closed end, forming a fixation zone (25#), within which relative movements of said peripheral zones (251', 251") are prevented, such that the connection element is fixed on said peripheral zones that are opposite one another (251', 251"). - a transducer housing with a first housing end (100+) and with a second housing end (100#); and - a tube arrangement extending inside the transducer housing from the first housing end to the second housing end, and wherein said tube arrangement is formed by at least two tubes, -- wherein of said tubes at least a first tube is designed as a measuring tube to guide a flowing medium, and -- wherein of said tubes a second tube is connected mechanically to the first tube using a first coupling element to form a first coupling zone (#11, #12) on the inlet side and using a second coupling element to form a second coupling zone (11#, 12#) on the outlet side; -- wherein of said tubes at least a first tube is designed as a measuring tube to guide a flowing medium, and -- wherein of said tubes a second tube is connected mechanically to the first tube using a first coupling element to form a first coupling zone (#11, #12) on the inlet side and using a second coupling element to form a second coupling zone (11#, 12#) on the outlet side; - wherein, in an area extending between the first and the second tube, the first coupling element has a slot which has at least one closed end, particularly formed as an elongated hole or as a straight longitudinal slot open at one side, with a maximum slot width and a maximum slot length which is greater than the maximum slot width, and a connection element which is located partially inside the slot and which is in contact with a slot edge encompassing said slot in such a way that the connection element mechanically couples peripheral zones (251', 251") of the slot edge, said zones being opposite one another and/or distanced from the closed end, forming a fixation zone (25#), within which relative movements of said peripheral zones (251', 251") are prevented, such that the connection element is fixed on said peripheral zones that are opposite one another (251', 251").