Electronic balance is a special type of electronic weighing device; The weighing system consists of three parts: the load system, the power transmission conversion system (such as sensors and other related power transmission conversion accessories), and the indication system (reading display). During the experimental process, errors in the balance are inevitable. Accurate calculation methods should be mastered to calculate errors in order to more accurately record experimental data. Understanding the causes of errors can help us better avoid this problem.

The error of electronic balance can be divided into two situations:

1 e≠d， The calculation formula for indication error is E=I-L (E: balance indication error, I: balance indication value, L: load added to the balance scale);

2. When e=d, the calculation formula for indicating error should be E=I-L (1? 2) d - △ L (d: the actual scale value of the balance, AL: the load on the balance plus rounding).

In any case, the error of each load point must be less than the error specified in the regulations.

Electronic scales should be repeatedly tested under both no-load and loaded conditions, with two types of loads: full load and half load. During the verification process, it is necessary to read and record the load and no-load balance positions. Meanwhile, please note that each load should be reset to zero. The difference between multiple measurements of uniform load should not exceed the allowable error value of the balance under load.