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(接上期)A.5.2预热(4.2.3)此项试验用来检验衡器在刚开机后一段时间内能否保持其计量性能。其方法是证明在示值稳定下来之前应禁止自动运行,并证明在启动运行30分钟期间零点和间隔误差(4.3.3)能否满足要求。不允许进行零点跟踪和自动置零操作,除非
(Continued) A.5.2 Preheating (4.2.3) This test is to check if the weighing instrument can maintain its metrological performance for a period of time just after power on. The method is to demonstrate that automatic operation should be prohibited until the indication has stabilized and to verify that zero and spacing errors (4.3.3) are met during the 30-minute start-up period. Zero tracking and autozeroing are not allowed unless