精密露点仪标准装置的性能测试及计量软件设计

摘要

In this paper, the principles and composition of humidity standard device with 373 precision dew point hygrometer as main regu-lator are introduced. Experiment was done to study the repeatability and stability of the device. Experiment results show that standard deviation of temperature repeatability experiment was 0. 00℃, standard deviation of humidity repeatability experiment was 0. 07%RH, standard deviation of dew point temperature repeatability experiment was 0. 01℃, standard deviation of temperature stability experiment was 0. 02℃, standard devia-tion of humidity stability experiment was 0. 33%RH, and standard deviation of dew point temperature stability experiment was 0. 066℃. A hu-midity measurement software was developed based on Labview. The software provides modular structures which can automatically deal with the date of tested machines, and the original record and certificates can go into mass production automatically.%文章介绍了以373型精密露点仪为主标准器的湿度标准装置的原理及构成,对该装置的重复性和稳定性进行了测试。结果表明温度重复性实验的标准偏差为0．00℃,相对湿度重复性实验的标准偏差为0．07%RH,露点温度重复性实验的标准偏差为0．01℃。温度稳定性实验的标准偏差为0．02℃,相对湿度稳定性实验的标准偏差为0．33%RH,露点温度稳定性实验的标准偏差为0．066℃。基于美国NI公司的Labview软件开发平台,开发了湿度仪器仪表计量软件。软件以模块化思想为基础,可实现数据自动处理,报告自动生成。