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首页> 美国政府科技报告 >LOFT (Loss-of-Fluid Test) Experimental Measurements Uncertainty Analyses. Volume XIX: Small-Pipe MCA (Multi-Channel Analysis) Densitometer
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LOFT (Loss-of-Fluid Test) Experimental Measurements Uncertainty Analyses. Volume XIX: Small-Pipe MCA (Multi-Channel Analysis) Densitometer

机译：LOFT（流体损失测试）实验测量不确定度分析。第XIX卷：小管mCa（多通道分析）密度计

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Uncertainty estimates were made for the fluid density measurements obtained from two radiation-hardened, small-pipe densitometers used on the Loss-of-Fluid Test (LOFT) nuclear reactor system. It was determined that under normal conditions where all-liquid and all-gas calibration points are available, the largest source of uncertainty for these densitometers is the randomness inherent in the radiation process. For these conditions, the uncertainties range from 0.073 to 0.103 Mg/m to the third power. However, if the all-gas calibration point is not available and if a theoretical coefficient is used instead, the uncertainties range from 0.089 to 0.131 Mg/ to the third power. The theoretical calibration process adds a large bias component to the uncertainty.

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