This report gives the results of a comparison of pressure standards of seven European National Metrology institutes in the range of negative gauge pressure from -950 hPa to 0 hPa. This comparison was piloted by LNE and was carried out from January 2011 to March 2012. This work is a part of the EURAMET project 1170 and is registered as a supplementary comparison EURAMET.M.P-S9. The transfer standard used was a pressure monitor RPM4 A160Ks manufactured by DH Instruments Inc., with a resolution of 0.1 Pa. The reference values have been determined from the weighted mean of the deviations reported by the participants for each specified pressure. Seventy-three of the seventy-seven values (96%) reported by the laboratories agree with the reference values within the expanded uncertainties with a coverage factor k = 2.
- negative gauge pressure
Otal, P., Boineau, F., Medina, N., Prazák, D., Wüthrich, C., Saxholm, S., Sabuga, W., Kocas, I., & Durgut, Y. (2017). EURAMET.M.P-S9 / EURAMET 1170, LOOP2: Comparison in the negative gauge pressure range -950 to 0 hPa: Final report. Metrologia, 54(1A), 1-21. . https://doi.org/10.1088/0026-1394/54/1A/07004