Dynamic Weighing Systems can be broadly divided into three categories according to the way they operate.
Discrete Mass Delivery Weighing Systems.
- weigh defined masses of material into batches where each batch may be put into a container or may be combined with other weighed masses to make up a mixture against a formula. These weighing systems represent a large majority of the dynamic weighing applications and use diverse range of weighing machines. Examples of these are process batch weighers and gravimetric filling machines.
Discontinuous Totalising Weighers. - Discontinuous totalising weighing systems are those which totalise discrete batch weights for the purpose of recording the accumulated total weight of a larger bulk mass of material, and sometimes also the throughput. These are always single feeder weighers. Examples are shipping and receiving weighers and in-process weighers.
In-Motion Weighing Systems. - determine the mass of moving objects or material passing over or through a device. The flow of measured mass may be continuous, as in the case of a stream of particulate material passing over a belt weigher, or it may comprise discrete weighing events as in the form of road vehicle or rolling stock axles or packages on a conveyor belt. Examples are belt weighers and catch weighers.
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