> Products > Sack-filling systems > Weighing and dosing devices
Net weighing system
This system is suitable for non-sticky products. The net weighing principle makes it also possible to fill big-bags according to the “multi-dump” principle. Subject to the construction the capacity is 400 up to 1400 sacks per hour.

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Net weighing system.
 
Click on the picture for explanation. Gross weighing system
This system is suitable for sticky products. The gross weighing principle makes it possible to weigh the product directly into the sack. It can also be used in locations where height is insufficient. Subject to the construction the capacity is 100 up to 300 sacks per hour.

Gross weighing system.

Volume dosing
Volume dosing is available for handling products such as sand, gravel, potting soil etc. For products such as cat litter, granules etc. a chamber-dosing device can be used.

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Volume dosing.

Dosing systems
Arodo dosing devices are selected according to product characteristics. The dosing system can be divided into various components:

Screw dosing
This dosing system is used for powdery products. A screw dosing unit consists of a bulk dosing screw for coarse dosing and a small one for fine dosing. Both screws are fitted with a pneumatically operated shut-off valve. The number of revolutions of the screws can be adjusted by means of a frequency control system.

Belt dosing
This dosing system is used for fragile products such as muesli, expanded grains or products which may not be damaged.

Two-stage valve dosing
This dosing system has been developed for “free flowing” products.

Vibrating trough dosing
This dosing system is used for big products such as dog cookies, coal, stones etc.