| 大流量孔口流量计的校准、数据处理及误差分析 |
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| 引用本文： | 龚雪平,丁 芸. 大流量孔口流量计的校准、数据处理及误差分析[J]. 环境科学研究, 1997, 10(6): 53-57 |
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| 作者姓名： | 龚雪平 丁 芸 |
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| 作者单位： | 1.中国环境监测总站,北京 100029 |
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| 摘 要： | 用罗兹流量计校准孔口流量计，用温度和大气压力对孔口流量计的负压进行修正，使孔口流量计的流量和压力修正项间的关系为一直线，得到孔口流量计的标准曲线并评价其精度。探讨了孔口流量计流量不确定度的主要来源，为精度控制提供了理论依据。
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| 关 键 词： | 罗兹 孔口 精度 不确定度 |
| 收稿时间： | 1996-04-15 |
Calibration of High volume Orifice Flowmeter and Its Data Process, Error Analysis |
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| GONG Xueping and DING Yun. Calibration of High volume Orifice Flowmeter and Its Data Process, Error Analysis[J]. Research of Environmental Sciences, 1997, 10(6): 53-57 |
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| Authors: | GONG Xueping and DING Yun |
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| Affiliation: | 1.China Station of Environmental Monitoring, Beijing 1000292.Resources and Environment Department, Beijing Normal University, Beijing 100875 |
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| Abstract: | Orifice flowmeter was calibrated by Roots flowmeter, and the offset pressure, a negative pressure, was corrected by temperature and atmospheric pressure. The calibration curve, which shows that the relation between flow fate and offset pressure, was modified as a line and its precision was assessed. The main sources of the orifice flowrate' uncertainty were discussed, and then the theory basis for the precision control was provided. |
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| Keywords: | Roots Orifice Precision Uncertainty |
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