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检定一般的直流电桥需要多只高准确度标准电阻及一台高准确度电阻箱。对于检定测量范围为10~3～10~(12)Ω的高阻电桥是很难找全如此多的标准。为了克服此困难,介绍仪用一只高准确度标准电阻就能对高阻电桥进行检定的方法,本方法所用其它辅助电阻及电阻箱,只起平衡作用无准确度要求。因此短期稳定即可。此方法给计量检定人员提供了方便。
Verifying the average DC bridge requires more than just high standard resistance and a high accuracy resistance box. It is very hard to find out so many standards for the high-resistance bridge with the measuring range of 10 ~ 3 ~ 10 ~ (12) Ω. In order to overcome this difficulty, the introducer uses a high-accuracy standard resistor to verify the high-resistance bridge. The other auxiliary resistors and resistance boxes used in this method are balanced only with no accuracy requirements. So short-term stability can be. This method gives metrologists a convenient place.