초록

A checkweigher uses a strain gauge load cell to provide a digital count which in turn is utilized to provide for automatic rezeroing and simplified referencing. The “grey zone”is taken into account for 100% rejection. Give away weight and standard deviation are also automatically determined.

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A weighing method where a weighing cell is responsive to moving items passing over an associated weight table and produces a digital count related to the weight of an item on the weight table comprising the following steps: initially while no item is on the weight table determining an average zero c

A weighing method where a weighing cell is responsive to moving items passing over an associated weight table and produces a digital count related to the weight of an item on the weight table comprising the following steps: initially while no item is on the weight table determining an average zero count; thereafter storing a digital count corresponding to a reference weight; running said items over said weight table, sensing said digital count for each item and, taking into account said average zero count, comparing such digital count to said reference weight count; and while no item is on the weight table again determining a new average zero count as in the first step.