Sotera Positive Displacement - Nutating Disc meter is ideal for end of hose use, in line or mounted to one of our Rotary Vane or 400B Series Diaphragm Pumps. It is able to store and display the current flow amount (total) or the cumulative flow amount (totalizer) in any of six user-specified units. The rugged corrosion-resistant body for the most demanding applications is easy to install with consistent accuracy up to +/- 0.2%. Battery powered, LCD display.