The Trimec Flow Products Dualpulse insertion paddle wheel flow transducer is a cost effective means of accurately measuring the flow of water, water-like liquids or a wide variety of low viscosity liquids in completely full, large diameter pipes. The sensor is inserted into the process piping via a suitable fitting. Liquid flow through the pipe results in rotation of the affixed paddle wheel. The rotational speed of the paddle is proportional to the flow velocity, and therefore, proportional to the flowrate in the pipe.