摘要
对基于自行研制出的低热电势分压箱、程控开关、精密控温机柜与若干标准仪器组建的直流低电压校准装置实施校准测量的不确定度来源进行了全面分析,并对若干典型值进行了定量评定。结果表明,该装置在1μV量值的测量不确定度为2.2%,适用于对直流数字纳伏表的校准。
Based on the low EMF divider and temperature-controlled box and other standard instrument, the low .DC voltage calibration system is built. The measurement uncertainty sources are analyzed, and the typical value is given. The results show that the measurement uncertainty at 1μV is 2.2%, so that it is satisfied for calibration for DC digital nanovoltmeter.
出处
《电测与仪表》
北大核心
2007年第4期1-4,12,共5页
Electrical Measurement & Instrumentation
关键词
直流低电压
校准
测量不确定度
分析
DC low voltage
calibration
measurement uncertainty
analysis
