Gravimetric feeders integrate a volumetric feeding device into an advanced system that operates by measuring the mass of the material being fed. A weighing system, such as a weigh scale or a configuration of load cells, is used to measure the weight of the hopper, feeder, and material. This information is then transmitted to a controller, which can accurately determine the quantity of material being fed. The feeder can be adjusted to a desired feed-rate, and the control system will automatically adjust the speed to maintain a consistent rate, even when there are variations in the material being fed. If the rate deviates significantly from the target, alarms can be triggered and the process can be halted in a controlled manner if needed, allowing for the issue to be resolved.
Hence, the performance difference between gravimetric and volumetric feeders is demonstrated by the addition of a weighing system that regulates the rate of materials injected into the process.
. Plastics Processing: Compounding, extrusion, and injection molding operations in the plastics sector rely heavily on volumetric feeders. They ensure consistent product composition and quality by metering virgin resins, colorants, and additives. They can be utilized as refill devices, bin dischargers, and material transfer into conveying lines.
. Food Processing: These feeders are widely used in the food industry for a variety of purposes, including dosing materials for baking and confectionery applications and transporting spices and flavorings. Their ability to precisely measure and maintain sanitary design makes them an invaluable tool for guaranteeing product integrity and adherence to food safety regulations.
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Pharmaceutical Manufacturing: To precisely dispense , various powdered or granular materials, and active pharmaceutical ingredients (APIs), volumetric feeders are used in pharmaceutical manufacture. Their precise dosing capabilities and hygienic design are essential for guaranteeing both product performance and regulatory compliance.
. Chemical and Petrochemical ProcessingThese feeders make it easier to measure catalysts, additives, and raw materials for a variety of chemical and petrochemical processes, including mixing, reaction, and formulation. They are appropriate for handling caustic materials because of their sturdy build and chemical resistance.
. Construction Materials To ensure accurate and constant dosing of additives, fillers, and aggregates in the manufacturing of concrete, mortar, and composites, industries producing construction materials rely on volumetric feeders.
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