The FMS measuring roller normally substitutes a regular idler roller station of the conveyor belt. The FMS measuring roller is selected according to the width of the conveyor belt. Both measuring roller axis are supported by force measuring sensors. This direct measurement at the point of load transmission makes the measuring system insensitive to forces that act in direction of the moving belt. Additional components (guiding beams and connections to the frame, etc.) to isolate the force are not required and lead to an extremely slim design. With an installation height of only 150 mm (5.9 in.) the FMS measuring roller can be easily installed where space is limited, e.g. in mobile crushers or screening plants. The adjustable support of the measuring roller can be adapted to various frame dimensions and widths. The mounting brackets simplify the installation and are also supplied. The integrated, sealed and contact-less speed detection is wear- and maintenance-free. It is also installed directly on the axis of the measuring roller.