Magnetically inductive flow measuring system for e.g. monitoring flow of measuring medium through measuring tube, has adjustment unit exchanged for adjusting magnetic field and/or flexibly designed in its shape and/or size

The system (1) has a measuring tube (2) detachably attached on an electrically insulating measuring tube, and a component (4) i.e. flat module, for producing a magnetic field. An adjustment unit (5) e.g. pole shoe, adjusts the magnetic field in the measuring tube, and an electrode (6) detects voltage induced by a measuring medium (3) flowing through the measuring tube. The system is designed such that the component is aligned to the electrode, and the adjustment unit is exchanged for adjusting the magnetic field and/or is flexibly designed in its shape and/or size. Die wesentliche Idee der Erfindung besteht darin, ein magnetisch induktives Clamp-On-Messsystem vorzuschlagen, was an elektrisch nichtleitenden Messrohren verschiedener Nennweiten lösbar angebracht werden kann.