Errors exist in all measurements. It is necessary to understand the law, nature, source and magnitude of error, which is of great significance for changing products and improving the precision and accuracy of instrumentation. In the process of direct measurement, due to the inaccuracy of the measurement tools used and the imperfection of the measurement method, the measurement results are inaccurate, so that they deviate from the true value, which is the error. The accuracy of instrumentation is referred to as precision, also known as accuracy. Accuracy and error can be said to be twin brothers, because there is an error, there is the concept of precision. The accuracy of an instrument is simply how accurate the measurement of the meter is close to the true value, and is usually expressed as a relative percentage error (also known as relative conversion error). The accuracy of the instrument is not only related to the absolute error, but also related to the measurement range of the instrument. If the absolute error is large, the relative percentage error is large, and the accuracy of the instrument is low. If the measurement range of two instruments with the same absolute error is different, then the relative percentage error of the instrument with a large measurement range is small, and the accuracy of the instrument is high. Accuracy is a very important quality index of instrumentation, which is commonly standardized and expressed by accuracy level. The accuracy level is the maximum relative percentage error, minus plus or minus and %. According to the unified national regulations, there are 0.1, 0.2, 1, 5 and so on. The lower the number, the more accurate the meter. If you have any questions about product consultation, product customization, agency, technical inquiry, quotation, etc., please contact Xingyi, 400-600-4496!