What is an automatic weighing machine (Weight selection machine)Accuracy

Under the same conditions, the same sample is tested repeatedly on the checkweigher. When the number of tests is large enough, they will show a normal distribution curve (Also known as Gaussian curve). In normal distribution, σ represents standard deviation (STD DEV), μ represents the average weight. Normally, we use ± 3 σ (± 3 times standard deviation) To define the accuracy of a checkweigher, that is, the weight distribution of all tests of the sample is (μ-3σ, μ3σ)The probability in is 0. 9974, it can be considered that the weight values of the test are almost all concentrated in (μ-3σ, μ3σ) Within the interval, the possibility of exceeding this range is less than 0. 3%. In short, it is 1000 tests, and a maximum of 3 unqualified tests are allowed. For a given product, under certain detection conditions, the smaller the standard deviation value, the higher the dynamic accuracy of the checkweigher. However, what needs to be made clear is that the dynamic accuracy must be based on the premise of a given product, a given detection condition and a given precision definition method. Automatic Weighing Machine online checkweigher Weight sorter sorting machine belt scale electronic scale, food hardware cosmetics mask drug printing instructions micro hot pot dumpling noodles super weight detection, accessories missing detection, weight classification.