一.前言目前小负荷材料试验机的检定方法主要是利用三等标准测力计,直接悬吊四等标准砝码和用校验杠杆配四等砝码进行。由于国内小负荷测量范围的三等测力计,尤其是小负荷范围的拉力测力计数目不多,单独悬吊四等标准砝码检定精度虽然很高,但是十分笨重,所以对检定小负荷试验机而言,目前使用校验杠杆配上四等标准砝码从制造和使用方面都是有利的。 I. Preface At present, the test method of small load material testing machine mainly uses the third-class standard dynamometer, directly suspends the fourth-class standard weight and the fourth-class weight with the checkout lever. Due to the third-class dynamometer in the domestic small-load measuring range, especially the small number of load-pull dynamometer, the test accuracy of single-load fourth-class standard weight is very high, but it is very cumbersome. Therefore, Tester, the current use of check lever coupled with fourth-class standard weight from the manufacture and use are beneficial.