Design and validation of a new primary standard for calibration of the top-end humidity sensors
Design and validation of a new primary standard for calibration of the top-end humidity sensors
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DOI：
10.1016/j.measurement.2008.01.006
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发表时间：
2008-11-01
期刊：
影响因子：
5.6
通讯作者：
Drnovsek, J.
中科院分区：
文献类型：
--
作者：
Hudoklin, D.;Bojkovski, J.;Drnovsek, J.
本文讨论了一种初级单压力露点发生器的设计和初步测试结果，该发生器用于校准高端露点传感器和其他类型的湿度传感器。露点发生器可在-60 ℃至+80 ℃的露点/霜点范围内工作。第一个实验表明，生成的露点/霜点的扩展不确定度为+/- 0.03 ℃。两个饱和器的设计和实施在一个紧凑的系统。由于饱和器的尺寸相当大，并且对饱和器的温度梯度和稳定性的要求严格，因此设计了特殊的液体浴，这确保了由于温度稳定性和均匀性而导致的不确定度低于2 mK。露点发生器被构造成以单程、部分再循环或完全再循环模式工作。这在使用发生器进行校准工作时以及在使用发生器进行实验时（即，在评估饱和器的效率时）都提供了灵活性。为了实现密封再循环，一种新的磁耦合泵已经开发。在这篇文章中，特别注意的是集中在饱和器，恒温器和泵的设计，（C）2008爱思唯尔有限公司保留所有权利。
The article discusses the design and results of the initial testing of a primary single pressure dew-point generator, which is used for calibration of the top-end dew-point sensors and other types of humidity sensors. The dew-point generator operates in the dew/frost-point range from -60 degrees C up to +80 degrees C. The first experiments indicate that the expanded uncertainty of the generated dew/frost point is in the order of +/- 0.03 degrees C. Two saturators were designed and implemented in a single compact system. As the size of the saturators is quite large and the requirements to temperature gradients and stability of the saturators strict, special liquid baths were designed, which assures uncertainty due to temperature stability and uniformity below 2 mK. The dew-point generator was constructed to either work in single pass, partially recirculation or complete recirculation mode. This provides flexibility both when using the generator for calibration work but also when using the generator for experiments i.e. when evaluating the efficiency of the saturators. In order to achieve leak tight recirculation a new magnetically coupled pump has been developed. In this article, special attention is concentrated on the design of the saturators, the thermostats, and the pump, (C) 2008 Elsevier Ltd. All rights reserved.