A checkweigher is a device used to measure the weight of an object. It usually consists of a weighing platform and a conveyor, and the weight of the object is known by passing the goods over the weighing platform of the conveyor and then reading the weight on the weighing instrument.

When an object is placed on a weighing pan, the gravitational force of the object is transferred to the Weighing system through the pan. It is deformed by a force, the extent of which is proportional to the magnitude of the force applied. The deformation causes the indicator to move accordingly, indicating the weight of the object. In order to ensure the accuracy of the measurement, the checkweigher needs to be calibrated. Calibration can be accomplished by placing an object of known mass on the weighing pan and then adjusting the zero position of the weighing instrument.

Sorting scales give release to items that pass the test, and to items that do not pass the weight, either by means of an alarm or by being pushed out of the conveyor belt by the sorting organization. Checkweigher can replace the manual sampling test on the production line, and it can do so for all the items passing through without exception, which is a very suitable measuring equipment for product quality.

The inspection table of the Sorting machine is installed with a light conveyor belt, when the measured item passes through the inspection table, the system determines its weight, detects whether it meets the specified weight requirements, and makes qualified, overweight, underweight prompts, or executes the corresponding rejecting action (according to the user's needs), and pushes out the substandard products from the production line. The control system has the functions of standard weight detection, counting, alarm and sorting. The automatic checkweigher can also have the function of grading and sorting (to be customized). When a conveyor belt transfers items of different weight specifications, the sorting scale is still able to identify their weight.