Multimeter's Accuracy Class
The accuracy of the multimeter is generally expressed by the accuracy, which reflects the size of the basic error of the instrument. The higher the accuracy, the smaller the measurement error.
The accuracy of the multimeter is divided into 7 levels: 0.1, 0.2, 0.5, 1.0, 1.5, 2.5, 5.0. In recent years, with the rapid development of the instrument industry, my country has been able to manufacture 0.05-level indicating instruments.
The accuracy grade reflects the magnitude of the fundamental error of the meter. The accuracy of the domestic MF18 multimeter for measuring DC voltage (DC V), DC current (DC A) and resistance (Ω) is all 1.0, which can be used in laboratories.
The 500-type multimeter, which is still widely used at present, is a 2.5-level instrument. It should be pointed out that due to the influence of circuits such as voltage dividers, shunts, and rectifiers, the basic errors of each gear of the same multimeter are not the same.
The accuracy of the general multimeter is mostly 2.5 (such as MF47, MF30, etc.). The multimeter's accuracy is represented on the dial as shown.
