精确校准电气DC电压发生器的自动设置
Automated Setup to Accurately Calibrate Electrical DC Voltage Generators
摘要：
在国家计量研究所（INRIM），开发了一种校准直流电压发生器的自动化装置，主要是1 mV至1 kV的顶级校准器。该装置的核心是INRIM制造的自动固定比率直流分压器。这种设置的重要成就是可以将分压器、具有线性特性的数字万用表、直流电压标准和校准下的直流电压发生器互连，并自动管理校准过程。这种校准方法可以节省大量的时间，以提高可靠性和增加发电机校准的准确性。系统的相对不确定度从0.6x10-6到1.2x10-4，提高了INRIM实验室以前校准可编程多功能仪器的能力。此外，该系统允许避免采用多个标准（其中一些仍在手动操作）来执行整个过程，而无需更改设置配置，也无需操作员在场。这种设置的概念可以转移到二级高水平的电气校准实验室，可以认为这对他们的校准活动有用。
英文摘要：
At National Institute of Metrological Research (INRIM), an automated setup to calibrate DC Voltage generators, mainly top-level calibrators from 1 mV to 1 kV has been developed. The heart of the setup is an INRIM-built automated fixed ratios DC Voltage divider. The significant achievement of this setup is the possibility to interconnect the divider, a DMM characterized in linearity, a DC Voltage Standard and a DC Voltage generator under calibration and automatically to manage the calibration process. This calibration method allows to save a lot of time, to improve the reliability and to increase the accuracy of the calibration of generators. The relative uncertainties of the system span from 0.6x10-6 to 1.2x10-4 improving the previous capabilities of the INRIM laboratory for calibration of programmable multifunction instruments. In addition, this system allows to avoid the employment of several Standards (some of them still manually operating) carrying out the entire process without changing the setup configuration and without the presence of operators. The concept of this setup can be transferred to secondary high-level electrical calibration Laboratories that could be consider it useful for their calibration activities.
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