Dynamic Weighing

In fabricating flowmeters, the meter's calibration is its final and accuracy determining step that comprises a great time consumption relative to its completion from its single component parts. Thus calibration (unless the respective time of calibration for a flow meter is not minimized) may represent a relevant contribution to fabrication costs. High-accuracy liquid flow calibration facilities are generally based upon static weighing gravimetric systems with flying start and finish. Even due to the fact that industrial liquid flow calibration facilities are successfully utilizing dynamic weighing, they still are being estimated to be less accurate than static weighing calibration systems. In international standards, static weighing has been preferred instead of dynamic weighing due to its estimated higher accuracy. This estimation has been based upon a rough mechanical model of an onebeam scale. The state of the art in the field of dynamic weighing liquid flow calibration, charging from the international standards, is still being represented by a theoretical foundation dating back about 40 years (1).