Min. weighing g 100
Max. weighing g 6000

The scale is inserted into a conveyor line for the objects to be checked, whatever their nature or shape. The object being transported takes a certain amount of time to travel across the whole scale pan; this time, although small, is sufficient for the scale to settle in the position proportional to the weight of the object. When the object is about to leave the scale, it intercepts a light beam that passes through the conveyor. The phototransistor receiver, thus obscured, gives the electronic circuitry the command to take a weight reading at that precise moment. This weight value is immediately compared with the two values, lower and upper, set as the limits of the permitted tolerance. From this comparison, the machine decides whether or not to accept the weighing, i.e. whether to allow the object to continue undisturbed, or to divert it or eject it to the right or left of its path, depending on whether its weight has exceeded or fallen short of the set tolerance.

The machine for continuous automatic weight control essentially consists of: A base which has the task of supporting the scale and the device for transporting the objects. A high-sensitivity, high-precision comparison scale, equipped with an electromagnetic detector that transforms into an electrical signal the position of the scale pan, weighted by the weight passing over it. A belt conveyor, and a projector-photocell assembly that signals the instant when the object is about to leave the scale pan.