multimeter error
The error of the instrument refers to the difference between the indicated value of the instrument and the true value of the measured value. It has three representations: (1) absolute error; (2) relative error; (3) reference error.
The error of the instrument is divided into two parts: the basic error and the additional error. The basic error is caused by the characteristics of the instrument itself and the defects of manufacturing and assembly. The size of the basic error is expressed by the reference error of the instrument, and the additional error is caused by the use of the instrument. Caused by the influence of external factors, such as external temperature, external electromagnetic field, instrument working position, etc.
