气象用湿度传感器低温测量探讨

通过湿度传感器的低温性能测试研究,掌握温度变化对湿度测量准确度的影响量。通过随机挑选的3支湿敏电容湿度传感器在实验室不同的温度点下开展湿度全量程测试,在测试温度低于0℃时,计量标准的两种计算方法 -标准方法和WMO法,与之进行比对分析,验证低温时湿度测量的两种计算方法的相关性和差异性,进而定量地分析0~-40℃环境下湿度计量的温度影响量。

Analysis of Low Temperature Messurementon Meteororlogical Humidity Sensor

In order to master the effect of humidity accuracy caused by the environment temperature changing, we conducted research in low temperature measurement of humidity sensors.Three humidity-sensitive capacitance sensors were selected at random to do full-scale humidity measurement at different temperature points in the laboratory.When the measurement temperatures were below 0℃, comparative analysis was done between the two calculating methods of the measurement standards, to prove the relativity and the difference between the two calculating methods on the humidity measurement and then to analyze the temperature correction of humidity measurement at 0~-40℃.