What is the accuracy class of electrical instruments?
The percentage of the maximum absolute error Δm of the instrument and the ratio of the instrument range Am is called the accuracy of the instrument. That is, +-k%=Δm/Am x 100%. K represents the accuracy level of the meter. my country's instrument accuracy level is divided into 7 levels, namely: 0.1, 0.2, 0.5, 1.0, 1.5, 2.5, 5.0 a total of 7 levels.
