Research on the Automatic Verification System of D.C.Shunt
Wang Xin-jun · Electrical Measurement & Instrumentation · 2010
This article introduces a new scheme of the automatic verification system of D.C.shunt.On the basis of research upon the principle of current comparator and its metrological characteristics,co-workers adopt current comparator technology and present commutation means to effectively reduce the thermoelectric power,then improved accuracy gready.The system adopts modular design,accomplishing instrument control and data collection through GPIB card,which could rapidly finish data collection,error calculation,round-off error,data display,data storage and arrangement of original records and certificate.This new scheme helps to increase the efficiency of verification, meanwhile to reduce cost and energy consumption.