测量无氧气表测量的不确定性评估. 第一部分.第一部分. "测量方法中的不确定性表达指南"
Mingming Wei1,2, Chunhua Wen3, Yinbao Cheng4
1Jiangxi Provincial Meteorological Observation Center, Nanchang 330096, China.
The Review of scientific instruments
|March 20, 2025
概括
这项研究引入了一个增强的框架来评估aneroid气压计测量不确定性,提高校准准确度. 它强调了考虑校准设备性能的重要性,特别是指示框,以获得可靠的结果.
科学领域:
- 计量学 计量学是一门学科.
- 仪器校准仪器的校准
- 测量科学 测量科学 测量科学
背景情况:
- 传统的无氧气表校准经常忽视校准设备的性能,特别是温度系数校准盒 (系数盒) 和指示校准盒 (指示盒).
- 这种监督导致测量不确定性的评估不准确,并损害校准结果.
研究的目的:
- 开发一个增强的评估框架用于aneroid气压计测量不确定性.
- 通过考虑关键设备性能因素,提高测量不确定性评估的精度和提高校准准确度.
主要方法:
- 设计了一种全面的校准方法,将系数框和指示框的性能整合到评估中.
- 通过执行新方法,收集经验测试数据.
- 使用收集的数据评估了测量不确定性,并考虑了各种影响因素.
主要成果:
- 改进框架的结果是温度系数的不确定性为U = 0.004 hPa/°C (k = 2) 和指示误差的不确定性为U = 0.12 hPa (k = 2).
- 传统方法的结果是表示误差的不确定性为U = 0.09 hPa (k = 2).
- 系数盒的性能对温度系数的不确定性影响最小,但忽视指示盒和温度系数的不确定性显著影响了指示错误的不确定性.
结论:
- 指示盒的性能和温度系数的不确定性对于准确的无气体气压计指示错误评估至关重要.
- 纳入这些因素导致更真实和可靠的测量不确定性评估.
- 这种增强的方法最终提高了aneroid气表校准的准确性.
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