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在计量检定/校准工作中,湿度是对环境条件的一项重要指标。湿度的量值表达,在各个规程、规范中不尽相同,如何表达更加科学规范呢?在此,笔者将就以下4个案例来对湿度的表达方法进行讨论。案例1:JJF1012-2007《湿度与水分计量名词术语及定义》的规定湿度:指气体中水蒸气的含量。绝对湿度(亦称体积水分浓度):指单位体积内水蒸气的质量,用dV表示,即dV=mVV%%(kg/m3)式中:V——湿气的体积,m3;mV——水蒸气的质量,kg。相对湿度:湿气中水蒸气的摩尔分数与相同温度
Humidity is an important indicator of environmental conditions during metrology verification / calibration. Humidity in the expression of value, in various procedures, norms vary, how to express more scientific norms? Here, I will be on the following four cases to discuss the expression of humidity. Case 1: JJF1012-2007 “Humidity and moisture measurement terms and definitions” Provisions Humidity: refers to the content of water vapor in the gas. Absolute humidity (also known as the volume of water concentration): refers to the quality of water vapor per unit volume, expressed in dV, that dV = mVV %% (kg / m3) Where: V-- volume of moisture, m3; Water vapor quality, kg. Relative humidity: Moisture vapor in the moisture fraction and the same temperature