Dosing & Weighing

Accurate dosing and weighing are essential for reliable powder and bulk solids processing. By combining the dosing device, weighing system and process control, materials can be supplied in the required quantity and at the required rate for both batch and continuous processes.

Hosokawa offers a broad range of dosing and weighing solutions, from small batch scales and dosing screws to precision feeders, big bag scales and loss-in-weight systems. The right configuration depends on the material properties, required accuracy, throughput and process conditions.

Dosing equipment controls the flow of powders and bulk solids into the next process step. Depending on the application, dosing may be volumetric or gravimetric and can be configured for batch or continuous operation.

The dosing system is selected according to factors such as flowability, bulk density, particle size, required capacity and dosing accuracy.

Product range

• Rotary valves – For controlled, low-pulsation dosing of powders and bulk solids.
• Microfeeding rotary valves – For accurate dosing of small and very small quantities.
• Dosing screws – For accurate and consistent volumetric dosing.
• Hygienic dosing screws – For applications with high hygiene and cleaning requirements.
• Vibratory dosing screws – For reliable dosing of products prone to bridging or irregular flow.
• Precision dosing equipment – For very small quantities and applications requiring high dosing accuracy.

Weighing equipment measures and controls the quantity of material during filling, batching, dosing or transfer. Depending on the process, weighing can be used for batch formation, inventory control, discharge weighing or continuous gravimetric dosing.

Integrated with the dosing equipment and control system, the weighing signal provides the feedback required for accurate and repeatable material handling.

Product range

• Rotating bowl scales – For accurate weighing of small components and batches.
• Flexible scales – Particularly suitable for sticky products and reliable discharge.
• Hopper scales – For batch weighing and material balancing.
• Vacuum scales – Combining pneumatic conveying, weighing and dosing.
• Conveyor scales – For batch formation and material balancing during conveying.
• Big bag scales – For weighing during big bag discharge.
• Silo scales – For fill-level monitoring and discharge weighing.
• Loss-in-weight scales – For continuous gravimetric dosing and controlled material flow.