Volumetric and Gravimetric Feeder

Volumetric feeders can provide reliable feedrates with accuracies to ± 1 % by volume, or ± 3% by weight. Volumetric feeders meter a consistent volume of material, such as a screw pocket, by the speed or revolution rate of the discharge device. This releases a steady quantity of material over time, which provides an economical way to meter materials that have a consistent bulk density.

There are four main differences between volumetric and gravimetric feeders that will influence your equipment selection. volumetric auger feeders are a versatile product able to feed many powder, pellet, flake, and chip like materials.

There are many types of feeders available to handle bulk solids and they can be divided into two categories: volumetric and gravimetric. A volumetric feeder discharges a volume of material as a function of time while a gravimetric feeder weighs material.