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介绍了如何利用大气压力的数值对标准通风干湿表的相对湿度示值进行修正,以JJG 205—2005《机械式温湿度计》中湿度检定点为例,计算出不同大气压力的数值对标准通风干湿表的相对湿度示值的影响值,说明利用通风干湿表测量相对湿度时一定要测量大气压的值并对测量结果进行修正。
This paper introduces how to use the value of atmospheric pressure to correct the indication of the relative humidity of a standard ventilated wet-dry table. Take the humidity test point in JJG 205-2005 “Mechanical Hygrometer” as an example to calculate the value of different atmospheric pressure against the standard Ventilation wet-dry table shows the value of relative humidity indication, indicating the use of ventilated wet-dry table when measuring relative humidity must measure the value of the atmospheric pressure and the measurement results were corrected.