冷镜式露点仪动态测量误差的实验与分析  

Experiment and analysis of chilled mirror dew point instrument for dynamic measurement errors

作　　者：吕雪芹[1] 敖振浪[1] 

机构地区：[1]广东省大气探测技术中心,广州510080

出　　处：《仪器仪表学报》2013年第S1期14-18,共5页Chinese Journal of Scientific Instrument

基　　金：自动地面站和探空系统现场试验考核评估系统及观测误差订正方法研究(GYHY201106048)项目资助

摘　　要：冷镜式露点仪静态测量准确度相对较高,虽然常常被业界用作测量空气湿度的标准器,但是如果使用不当,其动态测量误差可能超乎想象,甚至不可接受。本文通过实验方法,对MICHELL Optidew Vision冷镜式露点仪在检定室和野外环境中获取的测量数据进行统计分析,结果表明,与传统的数字式干湿表测量湿度方法相比,冷镜式露点仪动态测量误差比静态测量误差显著偏大。充分说明了在湿度变化快的环境里测量空气湿度,使用冷镜式露点仪是不太合适的。这些实践经验可以为从事湿度测量和计量检定的业务人员提供非常有益的参考。Static measurement accuracy is relatively high using chilled mirror dew point nstrument.Although often as a standard instrument to measure air humidity, but the dynamic measurement error may be beyond imagination if not used carefully, even unacceptable. Through experimental method, analysing measurement data of MICHELL Optidew Vision chilled mirror dew point instrument in the testing room and in field environment, the results show that dynamic measurement errors is significantly larger than the static of chilled mirror dew point instrument, compared with traditionalwith digital psychrometer. It is fully proved that using a chilled mirror dew point instrument is not quite right in humidity environment of rapid change. These practices can provide very useful reference for humidity measurement and metrological verification service personnel.

关 键 词：露点仪 实验 动态误差 分析 

分 类 号：TH765.5[机械工程—仪器科学与技术]