液位标准装置的不确定度分析

Electronic Design Engineering(2013)

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Abstract
介绍了以双频激光干涉仪为测量设备的液位标准装置的测量原理,对影响装置的主要因素进行了分析,采用不确定度A、B两类判定方法,通过实际应用的计算公式,最终对测量结果进行了不确定度分析,得出液位标准装置的标准不确定度u c为0.022 36 mm,展伸不确定度U为0.067 08 mm。
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Key words
uncertainty evaluation,level gauge,dual-frequency laser interferometer,liquid level standard device
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