Gravimetric feeders: Advanced control technologies for precise feeding
This article describes how using today's advanced control technologies with a properly installed feeder will ensure the most reliable, efficient gravimetric feeding control.
Gravimetric feeders are commonly used to feed bulk solids in the chemical, pharmaceutical, food, and plastics industries. Unlike a volumetric feeder (such as a screw feeder), which feeds material by volume, a gravimetric feeder feeds material by weight. In both batch and continuous operations, the gravimetric feeder uses a load cell measurement to feed material into a process at a constant weight per unit of time. Integrating the load cell measurement with the feeder's control algorithms is critical to the feeder's performance.