A method for calibrating and verifying the accuracy of weight loss scales with substitutes

Abstract

The invention relates to a method for calibrating and verifying the precision of a weight reduction scale with substitutes. Substitutes with a mass of about 1000Kg are divided into large-mass series substitutes and low-quality series substitutes. The prepared series substitutes are traceable and numbered. Then save it on the special platform and house on the production site; carry out numerical traceability and static calibration for the selected substitutes, and also calibrate the reduction scale for single-bucket materials; finally, verify the accuracy of the reduction scale in the production process, and use the added materials The net weight verified by the trade scale is compared with the net weight of the material dispensed by the reduction scale for a period of time. When the error is found to exceed 0.3%, the reduction scale can be calibrated at any time with a series of substitutes to achieve the purpose of accurate measurement of the reduction scale. The invention adopts the method of obtaining the substitute calibration on site, which ensures the precision of the use process of the weighting scale, the investment is small, and the operation is easy.

Description

technical field [0001] The present patent application belongs to the technical field of industrial measurement, and is a method for calibrating a weight scale in kind, and more specifically, relates to a method for calibrating with a substitute and verifying the accuracy of the weight scale with a physical object. Background technique [0002] Weighing scales were initially widely used in the light industry in the plastics, chemical fiber, and food industries. After 2011, with the maturity and development of the weighing scale technology, the weighing scale is also widely used in heavy industries such as cement, thermal power generation, and steel mixing. The accuracy of the weighing scale is critical to the quality of the finished product involved in mixing. The high cement content in the batching plant increases the shrinkage force of the concrete and causes cracks in the building. Low cement content will cause the concrete strength to decrease. The proportion of cement...

AI Technical Summary

Problems solved by technology

[0005] Most of the reduction scales used online cannot be calibrated in kind according to regulations

The environment in which the reduction scale is used, the degree of material condensation, the frequency of vibration of the silo, and the vibration of the screw unloading system will cause the reduction of the accuracy of the reduction scale, and the production process often needs to be calibrated at any time

The number of standard substances in actual production is small, and multiple large-quality standard substances are required to calibrate a decrement scale. Due to the limitations of hoisting, handling, and calibration series operations, the decrement scale cannot be calibrated in time.

The precision of the reduction scale is low, and there is a large error between the added materials and the actual requirements. The problem of how much difference has not been completely resolved

The quality and composition of the raw materials involved in the addition are unstable, and the product quality cannot be basically guaranteed

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