CAJ | 학술논문

低温环境下（温度0℃以下）湿度计的校准一直是难点。目前计量部门的校准实验室在对湿度计进行校准时，一般是在常温下进行。虽然绝大部分湿度计已经进行了温度修正，提供了温度系数，但在零下几十度的环境中，湿度计的准确度已经很难保证，示值误差无从知晓。本文论述的湿度计校准装置可以满足在环境温度-40~0℃条件下校准湿度计，方法准确可靠。
저온배경하（온도0℃이하）습도계적교준일직시난점。목전계량부문적교준실험실재대습도계진행교준시，일반시재상온하진행。수연절대부분습도계이경진행료온도수정，제공료온도계수，단재령하궤십도적배경중，습도계적준학도이경흔난보증，시치오차무종지효。본문논술적습도계교준장치가이만족재배경온도-40~0℃조건하교준습도계，방법준학가고。
How to calibrate hygrometers under low-temperature( below 0℃)condition is really difficult and important related to weather forecast and research fields. Almost all kinds of hygrometers,their technical specifications are given in normal temperature environment. For most metrology labs,calibration is processed under normal condition. So we can not evaluate the hygrometer when it works in low temperature. In this paper,we aim at the calibration method of hygrometers in low temperature. The measurement results indicated that the calibration technology fol-lowing is high accuracy、convenient and reliable.