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The dew point hygrometer mirror.
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very stable over time, during measuring campaigns. It was constructed
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Citations
A review of miniaturised humidity sensors is presented. Recent achievements in capacitive-, hygrometric-, gravimetric-, optical- and integrated sensors are discussed. Attention is paid to a general perspective of miniaturised humidity sensors, emphasising on integration issues and technological challenges. A table summarising most of the reviewed devices is included.
The paper presents a new complex model of silicon dew point
hygrometer. Construction of fabricated hygrometer is briefly shown. Next
the set of model equations is presented. The model describes: behavior
of water vapor contained in measured gas (saturated vapor partial
pressure, sub cooled water phenomenon), water mass transport
(condensation and evaporation processes), heat transport across
measurement head, silicon dew detector and regulator characteristics.
The numerical dew point hygrometer model realized in SIMULINK
environment is presented. Finally, comparison of measured data and model
responses is discussed
This paper presents the construction and a new complex model of the fabricated silicon dew point hygrometer. The model describes the behavior of water vapor contained in the measured gas (saturated vapor partial pressure, super cooled water phenomenon), water mass transport (condensation and evaporation processes), heat transport across measurement head, silicon dew detector, and regulator characteristics. The model was created in the SIMULINK environment. Finally, a comparison of measured data and model responses is discussed.
