How to improve the reliability and accuracy of weightlessness scale
As a high-precision quantitative batching device, the weightlessness scale is widely used in small-flow batching systems, generally used in batching systems less than 500kg/h. The appearance of weightlessness scales has gradually replaced belt scales, spiral scales and other measurement methods. In comparison, the weightlessness scale has the characteristics of high control accuracy, fully sealed design, simple calibration, and good stability. Today, Guangdong kenweigh will share with you how to improve the reliability and accuracy of the weightlessness scale. To make the weightlessness scale better serve production, it needs to be improved in details, that is, how the weightlessness scale can improve the reliability of measurement and the accuracy of control. The weightlessness scale improves the measurement reliability and control accuracy mainly from the following aspects: 1. The weightlessness scale appropriately selects the range of the load cell. In some cases, the feeding amount of the weightlessness scale is very small, such as 50kg/h. At this time, the sensor needs to have a higher sensitivity. If the sensor range is too large, the sensor is not sensitive to changes in weight. It is inevitable that there will be errors or even the display of zero flow. 2. Keep away from the place with vibration source as far as possible. The influence of the vibration weight is self-evident, especially the irregular vibration source, so if possible, the weightlessness scale should be installed far away from the vibration source. 2. 3. For the situation that the feeding amount is often adjusted during the feeding process and the adjustment is relatively large, dual PID control should be adopted. One PID is used for coarse adjustment, so that the feeding amount quickly reaches the set value, and then the other PID is used. Make fine adjustments to stabilize the feed rate near the set value. The automatic checkweigher machine, sorting scale, checkweigher, automatic sorting scale, and weight sorting scale independently developed by Guangdong kenweigh have solved the thorny problems in the production and packaging of products for a large number of enterprises in our country, and improved product quality assurance. The brand image of the company.
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