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随着工农业生产、交通运输和同内外贸易的不断发展,对各种大型衡器的准确度提出了越来越高的要求。严格按照规定进行周期检定,是保证称量准确度的重要措施之一。现在检定大衡器,大多是使用少量的标准砝码,通过多次替代法进行。这种方法不但降低了检定精度,而且使工作量增加很多。针对这种情况,国内外很多地方开始使用500千克以上的大砝码检定各种大型衡器,既提高了检定精度,又加快了检定速度,减轻了体力劳动。现在500千克以上的大砝码,全国已有上千个,达数百吨之多。目前的问题是,现有大砝码的规格、
With the continuous development of industrial and agricultural production, transportation and domestic and foreign trade, higher and higher requirements are put forward on the accuracy of various large-scale weighing instruments. In strict accordance with the provisions of the cycle test, is to ensure that the weighing accuracy of one of the important measures. Now check the large scale, most of them use a small amount of standard weight, by multiple substitution method. This method not only reduces the verification accuracy, but also greatly increase the workload. In response to this situation, many large places at home and abroad began to use large weights weighing more than 500 kg of various large scales, both to improve the test accuracy, but also speed up the test speed, reducing manual labor. Nowadays, over 500 kilos of large weights have reached over a thousand in the country, amounting to hundreds of tons. The current problem is that the existing specifications of large weights,