Abstract
In the scope of the project HUMEA – Expansion of European research capabilities in humidity measurement within the EURAMET EMPIR program, the modular chamber for calibration of relative humidity instruments was designed, manufactured and characterized. The modular chamber consists of arbitrary numbers of aluminum blocks each of which provides accommodation for the one relative humidity probe and also has the fittings for pressure and temperature probes as well as ports for gas sampling and/or supplying. The gas can be supplied from the dew/frost point generator or the larger climatic chamber. In the latter case, the airflow through the chamber can be enhanced by using an additional fan. The preliminary study was carried out to investigate the improvement in temperature uniformity using a new chamber in combination with two climatic chambers. The investigation results show significant improvement in temperature uniformity thus lowering the uncertainties of the calibration of relative humidity instruments.
Highlights
The measurement of relative humidity is complex and vitally important for many industrial, healthcare and meteorological applications
The modular chamber consists of arbitrary numbers of aluminum blocks each of which provides accommodation for the one relative humidity probe and has the fittings for pressure and temperature probes as well as ports for gas sampling and/or supplying
The gas can be supplied from the dew/frost point generator or the larger climatic chamber
Summary
D Šestan[1,2], D Smorgon[3], P Rothmund[3,4], L Iacomini[3], K Šariri[1,2], V Fernicola[3], D Zvizdić[1,2], N Hodžić[5]
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