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View Paper |
Session Topic: 5C, Mass Session |
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Paper Title: High Capacity Mass Dissemination With Four Position Mass Comparator |
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Date & Time: TUESDAY, August 6, 2002 |
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2:30 - 4:00pm PARALLEL SESSIONS - SESSION 5 |
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Speaker: Arthur Reichmuth
Mettler Toledo |
Email: Arthur.Reichmuth@mt.com |
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The dissemination of weight sets is a vital element in the traceability chain of mass. While equipment for the automatic dissemination of weights and weight sets from the sub-gram range up to the 20kg range is readily available, manual 1-to-1 comparisons is still the method for heavier weights. As if a manual mass comparison would not pose enough challenges to the metrologist, comparing weights of large nominal mass adds further complications to the dissemination, such as handling effort and time consumption, thus compromising the comparison accuracy. This paper introduces the basic elements of mass dissemination and discusses the requirements of high capacity mass dissemination to produce weight sets in the nominal range of 1kg up to 60kg. As of recently, a mass comparator has become available, the features of which are dedicated to high capacity mass dissemination. Among these features are the automatic dissemination of weights and weight sets (including the handling and the comparison weighings according to a predetermined dissemination scheme), a comparison range that covers the entire weighing capacity, and data collection for subsequent processing. The four place comparator allows the use of check standards and multiple standards for the sake of process control and uncertainty reduction. |
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