Xsens has developed a non intrusive (from outside of the pipe) high accuracy flow and fraction meters. The technology enables flow and fraction metering to be installed on standard process piping without any disturbance to the process. The meters has the accuracy and functionality characterizing in-line flow meters combined with the low cost and mechanical integrity obtained by clamp-on installation. This will reduce the cost of installation of such a meter with more than 90%. One of the first pilot installations is on fuel lines of ships to enable increased fuel control, more efficient operation and less use of fuel and reduced release of greenhouse gasses.