The Effect of Adjustment System to The Electronic Balance Performance

Abstract

This research aims to present the impact of the adjustment system on the performance of electronic balance. In this research, the electronic balance with a maximum capacity 520 g readability 0.1 mg has been adjusted differently: internal built-in weight adjustment system and external weight adjustment system according to EURAMET cg-18 calibration method. The calibration results of both conditions in the topic of the error of indication test, which is associated with linearity deviation characteristics of the electronic balance, showed that the calibration results for this topic were significantly different,  > 1. Based on the linearity graph of both conditions, the linear error values of both conditions were similar and less than the value specified by the manufacturer, ±0.4 mg.However, when considering the slope that represents the sensitivity characteristic, it was found that in case of adjusting with an internal weight with a slope of 4.00x10^-3 mg, and when adjusted with an external weight, the slope value was reduced to 5.97x10^-4 mg, indicating that the internal weight adjustment system of this electronic balance experienced an error that affected the performance of the electronic balance