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一、修订背景随着扭矩扳子应用的推广与普及,扭矩扳子检定仪作为保障扭矩扳子量值准确的计量标准器也被大量应用。目前,市场上各类扭矩扳子检定仪样式和数目繁多,包括国外进口的、国产的,质量参差不齐。JJG797-1992《扭矩扳子检定仪检定规程》(以下简称“旧规程”)制定于1992年,规定使用扭矩标准机及杠杆砝码进行检定。但是随着应用越来越多,问题也随之出现,旧规程中两种方法的检定结果就存在一定差别,特别是针对0.3级
First, the revised background With the promotion and popularization of the application of the torque wrench, torque wrench tester as a measure of the accuracy of the torque wrench is also a large number of applications. At present, on the market all kinds of torque wrench tester style and a large number, including imported, domestic, uneven quality. JJG797-1992 “torque wrench tester verification procedures” (hereinafter referred to as “old procedures ”) was established in 1992, the provisions of the use of torque standard machine and lever weights for testing. However, with more and more applications, the problems also arise. There are some differences between the two methods in the old protocol, especially for 0.3