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在力学的日常计量检定工作中,标准测力杠杆(以下简称为测力杠杆)有着准确度高(0.1级);量程宽;体积轻,便于携带;结构简单,与被检试验机连接方便;容易操作等优点,所以对于5kN以下受拉的试验机检定工作,测力杠杆便成为了首选的标准器。 然而,对于一些无法使用测力杠杆检定的电子拉力试验机,却无相关规定及论文涉及。本文以作者检定的一台美国UTS公司制造的精度等级为1.0级的电子拉力试验机为例,说明使用测为杠杆开展检测时要注意几个问题。对电子拉力试验机,使用测力杠杆检定所得部分数据如表1: 其中示值相对误差为-5.0%,(根据JJG475-1986电子
In the routine metrological verification of mechanics, standard force-measuring lever (hereinafter referred to as force-measuring lever) has high accuracy (0.1 level), wide range, light weight and easy to carry, simple structure, convenient connection with the testing machine to be inspected, Easy to operate and so on, so for 5kN tensile testing machine below the test, the force lever has become the preferred standard. However, for some electronic tensile testing machines that can not use the force-measuring lever test, there is no relevant provisions and papers involved. In this paper, an author of the United States manufactured by the UTS precision grade 1.0 electronic tensile testing machine as an example, the use of testing measured as a lever to pay attention to several issues. Electronic tensile testing machine, the use of force lever test results obtained in part of the data shown in Table 1: The value shown in the relative error of -5.0% (according to JJG475-1986 electronic