Title - About Loss-in-Weight Feeding Systems

Loss-in-Weight feeding systems provide the most accurate measurement and control of materials in the batching process. Loss-in-Weight Feeding uses gravimetric feeders, such as loss-in-weight screw feeders or vibratory feeders, like the Geomate™ Vibratory Feeder. In loss-in-weight feeding, the vibratory feeders are mounted on individual load cells or scales in order to weigh and feed the materials with accuracy. Loss-in-weight feeders are also used when the batch cycle times need to be very short.


In 3Sigma’s Loss-in-Weight Feeding System, Gravimetric feeders batch multiple ingredients into a collection hopper. The feeding speed is controlled by the Loss-in-Weight feeder controller. Each ingredient is batched with high accuracy due to each vibratory feeder having its own dedicated weighing system, the Loss-in-Weight batching system.

In 3Sigma’s Loss-in-Weight Feeding System, Gravimetric feeders batch multiple ingredients into a collection hopper. The feeding speed is controlled by the Loss-in-Weight feeder controller. Each ingredient is batched with high accuracy due to each vibratory feeder having its own dedicated weighing system, the Loss-in-Weight batching system.

 

During a Loss-in-Weight feeding cycle, at one point the feeder must be refilled while product is still being discharged. At this moment the scale system is no longer “useful”, as it cannot recognize what it is losing while product is being added to the scale. Although the control system utilizes “learned data” to best control the feeder at this time, for all practical purposes the unit operates in the volumetric mode for this short period of time. Due to this it is vital to keep this duration to a minimum, thereby ensuring optimal accuracies. 3Sigma will specify and provide, if needed, the proper refill system to ensure optimal feed rate accuracies.


Loss-in-Weight feeding is typically used with micro ingredients, since highly accurate weighing is often necessary in the process and to control the cost of expensive materials.

 

When all the materials are fed, the batch process is complete and the materials are delivered to the process below. The ingredients are not layered, since all materials are being metered simultaneously. As a result, the overall batch time and processing times down the line are significantly reduced.

Geomate Vibratory Feeder Flow

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