基于电容传感器的低露点湿度仪研制

Development of a Low Dew Point Humidity Hygrometer Based on a Capacitor Sensor

该文在介绍氧化铝电容式传感器测量露点原理的基础上,详细论述了低露点湿度测量的几个重要问题:温度与压力补偿、传感器的稳定性及校正方法和系统测量问题,最后给出了温度修正经验公式.测试表明,该湿度仪精度高、性能稳定.

Based on the principle of alumina capacitor sensors, the paper discusses several key points in the low dew point humidity measurements. These are temperature and pressure compensation, stability of the sensor, the emendation method and system measurements. An empirical formula is given. Tests show that precision of the hygrometer is high and its performance is stable.