San Diego 2002 Workshop and Symposium/High-Capacity Mass Dissemination with Four-Place Mass Comparator

摘要

After briefly introducing the basic elements of mass dissemination, the requirements of high-capacity mass dissemination to calibrate weights and weight sets in the nominal range of a few kilograms up to 60 kg are discussed. A new mass comparator dedicated to high-capacity mass calibration is delineated. It features a four-place turntable for automatic weight ex-change, a set of substitution weights, and means to control the calibration and to collect the measurement data. Actual measurement results of this comparator are presented, and a few typical applications are commented. These comprise high-accuracy calibration of mass standards, calibration of large-size objects, calibration of disc weights of force standard machines or primary pressure balances, and high-accuracy volume determination.