液位标准装置的不确定度评定

The Uncertainty Evaluation of Liquid Level Standard Device

李经纬 佟仕忠 关 喆

Li Jingwei Tong Shizhong Guan Zhe

关键词: 液位标准装置, 影响因素, 不确定度, 双频激光干涉仪, , 扩展不确定度

This paper briefly introduces the measuring principle and structure of the liquid level standard device, which is based on the double-frequency laser interferometer equipment for measuring the liquid level. An uncertainty evaluation mathematical model for the liquid level standard device has been established. In the studies, various uncertainty affecting the liquid level standard device were analyzed. Based on this, the uncertainty components of different influence factors were calculated. The results show that the uncertainty value of the liquid level standard device was 0.045 588 mm, and the expanded uncertainty was 0.091 176 mm.

10.3696/j.issn.1672-6952.2015.01.017