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JJG555—1996《非自动秤通用检定规程》中引入了使用中检验的概念 ,并规定使用中检验允许误差为首次检定允许误差的两倍。从纯技术的角度讲 ,引入这一概念是非常科学合理的。任何计量仪器 ,在使用中都会随着时间推移 ,计量性能发生变化 ,不可能一直保持刚检定时的计
JJG555-1996 “Non-automatic scale General Verification Regulation” introduces the concept of in-service inspection, and provides for the use of inspection tolerance for the first test to allow twice the allowable error. From a purely technical point of view, the introduction of this concept is very scientific and rational. Any measuring instruments, in use will be over time, the measurement performance changes, it is impossible to maintain the test has just been the total