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沈阳德克仪器厂(现沈阳天平仪器厂)生产的 TG506型5级天平,秤量20kg,分度值40mg,相对精度为2×10~(-6),在质量量值传递过程中,适用于检定三等砝码,若用来检定二等10kg 砝码,显然不能满足检定精度±38mg的要求。通过对 TG506型天平的结构和原理分析,以及调整、实验证明,该天平可提高到4级(相对精度1×10~(-4)),分度值达到20mg,能满足二等砝码的检定。
The TG506 type 5 scale produced by Shenyang Dirk Instrument Factory (now Shenyang Balance Instrument Factory) weighs 20kg and has an indexing value of 40mg with a relative accuracy of 2 × 10 -6. In the process of mass value transfer, it applies to Test third-class weight, if used to test second-class 10kg weight, obviously can not meet the test requirements ± 38mg accuracy. Through the analysis and adjustment of the structure and principle of the TG506 balance, the experiment proves that the balance can be raised to level 4 (relative accuracy of 1 × 10 -4) with an index value of 20 mg, Test.