摘要
考察了自动气象站气压传感器校准误差的年变化量。统计分析发现,CAWS型自动站气压传感器的校准差值多偏向负值区域,且不合格的传感器均以负值超差。造成校准结果年变化量偏大、负值超差的原因是气压标准器受环境温度变化的影响,除本身的系统误差以外,还产生附加误差。经实地试验,当环境温度高于30℃时,气压标准器的数值发生正向偏移,最大附加误差约0.2hPa。
It has been inspected. The annual variation quantity of adjusting pressure sensor error. Statistical analysis shows, calibration error of CAWS pressure sensor mostly deviated negative value region, and unqualified sensor conforms negative value ultra error. It mainly caused by pressure standard instrument influenced by environment temperature, which creates annual variation quantity of the calibration result to be big. Besides itself system error, it also creates the additive error. After experiments on the spot the value of pressure standard in strument has the forward displacement, the biggest additive error approximately 0.2hPa when the ambient temperature is higher than 30 degree.
出处
《气象水文海洋仪器》
2007年第2期16-19,共4页
Meteorological,Hydrological and Marine Instruments
