Aiming at the traceability problem of DC low value resistance meters,our unit has developed a high-precision digital DC resistance box.This paper takes the digital DC resistance box as the research object,introduces the implementation principle of the digital DC resistance box,builds the calibration system of the digital DC resistance box to calibrate it,and carries out the measurement uncertainty evaluation.According to the evaluation results of measurement uncertainty,the measurement uncertainty of the digital DC resistance box calibration results can reach up to 1.4X106.
关键词
直流低值电阻表/数字式直流电阻箱/测量不确定度/模拟电阻
Key words
DC low value resistance meter/digital DC resistance box/measurement uncertainty/analog resistance
维普
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