1. Check Weigher is divided into static check weigher and dynamic check weigher

In principle, the check weigher must be divided into dynamic check weigher and static check weigher. 

Static check weigher means that the product must be manually placed on a platform scale for weighing. Precision weighing results can be obtained with static check weighers, but this process can only be performed by sampling. 

Dynamic check weigher, also known as automatic check weigher, is used to monitor and classify standard piece rate goods according to the weight in the production process. This is the automatic weighing (100% control) for all products produced, and the products on the conveyor belt are weighed continuously, that is, they are in the dynamic state. In this case, it is not the check weigher itself but the rate of production that determines when the check weigher outputs the weight values.

2. The application of automatic check weigher

Automatic check weighers can be permanently integrated into the production line to check  products in production at a fast production rate. There are different types of check weighers, which are classified as in-line check weighers or terminal check weighers depending on where they are used. Multitrack check weighers may also be used if volume requirements are high, and the filling and packing equipment delivers products on multiple tracks in parallel. The assembly unit that combines an automatic check weigher and a metal detection machine (critical control point, CCP) provides a space-saving solution because they use the required weighing input belt for metal detection. 

A typical automatic check weigher usually consists of three conveyor belts arranged in a row, from which the weighing input belt delivers and separates the product correctly by accelerating and transfers it to the next weighing belt as perfectly as possible. Automatic check weighers (with or without an integrated metal detector) provide a complete record of all measurements, including a wealth of important data about the actual performance (and productivity) of the production line.