FTI positive displacement flow meters are especially designed for the precise measurement of thick liquids like resins, polyurethanes, glues, paints and chemicals.
MacNaught manufactures precision oval gears mechanical meters for oil and hydraulics fluids measurements, fluid transfer and lubrication processes for the agricultural, automotive, industrial, mining and transport industries.
VSE are specializing in fluid measurement technologies for the chemical and petrochemical industries. With their helical screw and meshing gears flow meters, they offer a wide range of solutions to measure, blend and fill plastics adhesives, resins, hardeners, compounds, foams plasticisers, dyes, paints, and synthetic products.
Theory of operation:
A positive displacement meter may be compared to a bucket and a stopwatch. The stopwatch is started when the flow starts, and stopped when the bucket reaches its limit. The volume divided by the time gives the flow rate. For continuous measurements, we need a system of continually filling and emptying buckets to divide the flow without letting it out of the pipe. These continuously forming and collapsing volumetric displacements may take the form of pistons reciprocating in cylinders, gear teeth mating against the internal wall of a meter or through a progressive cavity created by rotating oval gears or a helical screw.