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气象:2011,37(5):622-625
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空气密度对PG7607活塞压力计测量结果的影响
(中国气象局气象探测中心, 北京 100081)
The Effect of Air Density on Measurement Result of PG7607 Piston Pressure Gauge
(CMA Meteorological Observation Centre, Beijing 100081)
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投稿时间:2010-06-09    修订日期:2010-12-26
中文摘要: 由于空气密度测量的影响所引入的不确定度分量是活塞压力计测量结果不确定度的主要组成部分之一。本文针对PG7607基准级活塞压力计通过公式推导分析了这种影响的程度,结果表明:空气密度对于该活塞压力计测量结果的影响与使用地点环境大气的温湿压状态有关;与使用地点环境大气温湿压测量结果的不确定度有关;针对实验室条件,在全国范围内,空气密度对于该活塞压力计测量结果的影响在0.25 ppm至0.35 ppm范围内,在北京地区,空气密度对于该活塞压力计测量结果的影响在0.31 ppm至0.33 ppm范围内。除了由于温湿压测量误差的不同引起的最终计算结果不同外,本文的分析方法适用于其他类型的活塞压力计。
Abstract:As the uncertainty component introduced by the effect of air density measurement is one of the main compositions of the measurement result uncertainty of the piston pressure gauge, the paper analyzed the effect degree with formula derivation to PG7607 primary piston pressure gauge, the results show that: the effect of the air density to the measurement results of the piston pressure gauge is related to the environmental atmospheric temperature, humidity, pressure status at the using site; related to the measurement result uncertainty of environmental atmospheric temperature, humidity, pressure at using sites. With the laboratory condition, the effect of the air density to measurement results of the piston pressure gauge is in the range from 0.25 ppm to 0.35 ppm in China, the effect of air density to the measurement results of piston pressure gauge is in the range from 0.31 ppm to 0.33 ppm in Beijing. The analysis method in this paper can be applied to other type piston pressure gauges, besides the final computation result differences due to the difference of temperature, humidity and pressure measurement errors.
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基金项目:气候观测综合计量检定技术研究(GYHY200706003)资助
引用文本:
李建英,贺晓雷,于贺军,王有利,2011.空气密度对PG7607活塞压力计测量结果的影响[J].气象,37(5):622-625.
LI Jianying,HE Xiaolei,YU Hejun,WANG Youli,2011.The Effect of Air Density on Measurement Result of PG7607 Piston Pressure Gauge[J].Meteor Mon,37(5):622-625.