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。
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.
出处
《环境科学研究》
EI
CAS
CSCD
北大核心
1997年第6期53-57,共5页
Research of Environmental Sciences
