Faced with weighing equipment, we often encounter one of its main characteristics as discreteness (d). In this article we will try to clarify the question of what it is.
Discreteness is an indication of the accuracy step of the scales, the number relative to which the indication of the weight of the weighed object will be rounded. Since it will never be possible to determine the weight of any product absolutely correctly and accurately, whether it be electronic or mechanical, the scales always show the weight rounded closer to the discreteness reading. The smaller the discreteness, the higher the accuracy of the weight.
Let's consider several examples of weighing equipment, for example, laboratory and analytical balances have the first class of accuracy with a resolution of d = 0.00001 g, which is the minimum indication in weighing equipment. Such equipment has a highly specialized working direction, where high accuracy of weight measurement is required. But there is equipment that produces industrial weighing, for example, on truck scales. Such equipment has high discretization rates, which can reach d=400 kg and more.A large discretization index is not an indication of poor weighing accuracy. Such discreteness is due to the largest weighing limit on this equipment. In modern weighing equipment, to improve accuracy, they began to change several measurement modes, which allows you to set different values of discreteness and errors for different ranges. As a result, with an increase in the load on the scales, the discreteness increases.
When carrying out state verification, weighing equipment is recognized as ideally accurate if the discreteness parameter is equal to the error parameter (the value of verification division).
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