For the first time a EURAMET comparison of standard facilities in the field of low air speed is presented. The air velocities range from 0.05 m/s up to 1 m/s. Two different thermal anemometers are used as Transfer Standards (TS), namely a ball-type and a planar-type anemometer. Due to their construction it is possible to analyze different components of the flow vector. Orientation-dependent measurements which are investigated in addition might also deliver information concerning the components of the flow vector. A Comparison Reference Value (CRV) is calculated with the help of the chi-squared test according to the procedure A presented by Cox and the degree of equivalence of the laboratory data to the CRV is determined. Both TS show reasonable results and a high degree of equivalence. Furthermore the degree of equivalence of the laboratory data to each other is investigated in detail.
Orig. title of the final report: EURAMET.M.FF-S9: Intercomparison of very low air speed standard facilities (0.05 - 1 m/s)
Zitierung
Pachinger, D., De Huu, M., Müller, H., Care, I., Frederiksen, J., Piccato, A., & Bertasiene, A. (2017). EURAMET project No. 1225: intercomparison of very low air speed standard facilities (0.05 m/s to 1 m/s). Metrologia, 54(1A, Tech. Suppl.), 1–22. https://doi.org/10.1088/0026-1394/54/1a/07021
