Comparison of the dew-point temperature in range from -50 °C to +20 °C between GUM and CMI

Project Description

In this project, one laboratory from GUM and two laboratories from CMI (Brno, Prague) will participate in comparison of the dew point temperature in range from -50 °C to +20 °C. In order to ensure measurement capability and uncertainty of CMI this comparison with GUM has been set up. As the transfer standard will be used the chilled mirror hygrometer 373LX. Five frost/dew temperature points will be carried out at least two times. From the deviation and the associated expanded uncertainty of each partner the normalized error En will be calculated.

 Final Report 2015-02-19

In this project, one laboratory from GUM and two laboratories from CMI (Brno, Prague) participated in comparison of the dew point temperature in range from -50°C to +20°C. In order to ensure meausement capability and uncertainty of CMI this comparison with GUM has been set up. As the transfer standard used the chilled mirror hygrometer 373LX. Five frost/dew temperatrure points carried out at least two times. From the deviation and the associated expanded uncertainty of each partner the normalized error En was calculated. Results of coefficient En against CMI (Brno) were from 0,12 to 0,53 and in CMI (Prague) from 0,18 to 0,93.