How does viscosity affect the accuracy of the FMI pump?
A. The FMI pump is positive displacement and, in general, viscosity independent. However, viscous fluids should use lower RPM drives (400 RPM or less) with pump heads adjusted to longer piston strokes. There is no absolute value for the maximum viscosity an FMI pump can handle. For extremely viscous fluids, pressure feeding on the inlet side of the pump and/or heating of fluid are commonly used to aid in feeding fluid to the pump. FMI also manufactures temperature controlled pump heads “WT” to help maintain fluid temperatures up to 360 F as it flows through the pump.
A.The FMI pump is positive displacement and, in general, viscosity independent. However, viscous fluids should use lower RPM drives (400 RPM or less) with pump heads adjusted to longer piston strokes. There is no absolute value for the maximum viscosity an FMI pump can handle. For extremely viscous fluids, pressure feeding on the inlet side of the pump and/or heating of fluid are commonly used to aid in feeding fluid to the pump. FMI also manufactures temperature controlled pump heads “WT” to help maintain fluid temperatures up to 360 F as it flows through the pump.
