Compact design of Coriolis flowmeters for large nominal diameters: Until now, the compact mass flow meters on larger nominal diameters resulted in a previously unknown measurement error. Christan Matt (left) and Gehard Eckert from Endress+Hauser Flowtec in Switzerland got to the bottom of the matter: "Above a certain ratio of diameter to length of the measuring tube, the Reynolds number comes into play," explains Matt. This key figure describes the flow condition in the measuring tubes. The team developed a method to determine the Reynolds number without external input in the electronics of the transmitter. Together, these two factors make it possible to design relatively small Coriolis flowmeters, even for large nominal diameters.