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首页> 外文会议>Sixty-First Appalachian Gas Measurement Short Course, Aug 15-17, 2001, Coraopolis, PA >TWO LEADING MOISTURE MEASUREMENT TECHNOLOGIES
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TWO LEADING MOISTURE MEASUREMENT TECHNOLOGIES

机译：两种领先的水分测量技术

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摘要

Dew point is the temperature at which water vapor undergoes a change in state from gas to liquid. PPMw, PPMv, absolute humidity, and similar are measurements of the abundance of water in a process gas. Gas-specific lab data is needed to convert from one measurement to the other. On natural gas streams, lab data does not exist below -40℃. Whenever dew points beyond the limits of experimentally derived data are reported, it is important to understand that the analyzer is reporting a guess based upon some manufacturer-specific algorithm. There is no possible means of verifying the accuracy of a guess short of experimentally confirming the data. By the way, if you are beginning to think that using a chilled mirror device is the best way to measure the moisture dew point, beware! The dew point detected by a chilled mirror is the temperature at which dew first forms, but; the dew may not be water.
机译：露点是水蒸气从气态变为液态的温度。 PPMw，PPMv，绝对湿度等是工艺气体中水含量的测量值。需要将特定于气体的实验室数据从一种测量转换为另一种。在天然气流中，低于-40℃时不存在实验室数据。每当报告露点超过实验得出的数据的限制时，重要的是要了解分析仪基于某些特定于制造商的算法来报告猜测。除了通过实验确认数据之外，没有任何可能的方法来验证猜测的准确性。顺便说一句，如果您开始认为使用冷镜设备是测量水分露点的最佳方法，请当心！由冷镜检测到的露点是首先形成露点的温度，但是；露水可能不是水。

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