TY - JOUR
T1 - EURAMET.M.P-S9: comparison in the negative gauge pressure range -950 to 0 hPa FINAL REPORT
AU - Saxholm, Sari
AU - Otal, Pierre
AU - Altintas, Aykurt
AU - Grgec Bermanec, Lovorka
AU - Durgut, Yasin
AU - Hanrahan, Rory
AU - Kocas, Ilknur
AU - Lefkopoulos, Alexandros
AU - Prazák, Dominik
AU - Sandu, Ion
AU - Setina, Janez
AU - Spohr, Isabel
AU - Steindl, Dietmar
AU - Tammik, Kristjan
AU - Testa, Nicola
PY - 2016
Y1 - 2016
N2 - A comparison in the negative gauge pressure range was
arranged in the period 2011 - 2012. A total of 14
laboratories participated in this comparison: BEV
(Austria), CMI (Czech Republic), DANIAmet-FORCE
(Denmark), EIM (Greece), HMI/FSB-LPM (Croatia), INM
(Romania), IPQ (Portugal), LNE (France), MCCAA (Malta),
METROSERT (Estonia), MIKES (Finland), MIRS/IMT/LMT
(Slovenia), NSAI (Ireland) and UME (Turkey). The project
was divided into two loops: Loop1, piloted by MIKES, and
Loop2, piloted by LNE. The results of the two loops are
reported separately: Loop1 results are presented in this
paper.
The transfer standard was Beamex MC5 no. 25516865 with
internal pressure module INT1C, resolution 0.01 hPa. The
nominal pressure range of the INT1C is -1000 hPa to +1000
hPa. The nominal pressure points for the comparison were
0 hPa, -200 hPa, -400 hPa, -600 hPa, -800 hPa and -950
hPa.
The reference values and their uncertainties as well as
the difference uncertainty between the laboratory results
and the reference values were determined from the
measurement data by Monte Carlo simulations. Stability
uncertainty of the transfer standard was included in the
final difference uncertainty. Degrees of equivalences and
mutual equivalences between the laboratories were
calculated.
Each laboratory reported results for all twelve
measurement points, which means that there were 168
reported values in total. Some 163 of the 168 values (97
%) agree with the reference values within the expanded
uncertainties, with a coverage factor k = 2. Among the
laboratories, four different methods were used to
determine negative gauge pressure.
It is concluded that special attention must be paid to
the measurements and methods when measuring negative
gauge pressures. There might be a need for a technical
guide or a workshop that provides information about
details and practices related to the measurements of
negative gauge pressure, as well as differences between
the different methods.
The comparison is registered as EURAMET project no. 1170
and as a supplementary comparison EURAMET.M.P-S9 in the
BIPM key comparison database.
AB - A comparison in the negative gauge pressure range was
arranged in the period 2011 - 2012. A total of 14
laboratories participated in this comparison: BEV
(Austria), CMI (Czech Republic), DANIAmet-FORCE
(Denmark), EIM (Greece), HMI/FSB-LPM (Croatia), INM
(Romania), IPQ (Portugal), LNE (France), MCCAA (Malta),
METROSERT (Estonia), MIKES (Finland), MIRS/IMT/LMT
(Slovenia), NSAI (Ireland) and UME (Turkey). The project
was divided into two loops: Loop1, piloted by MIKES, and
Loop2, piloted by LNE. The results of the two loops are
reported separately: Loop1 results are presented in this
paper.
The transfer standard was Beamex MC5 no. 25516865 with
internal pressure module INT1C, resolution 0.01 hPa. The
nominal pressure range of the INT1C is -1000 hPa to +1000
hPa. The nominal pressure points for the comparison were
0 hPa, -200 hPa, -400 hPa, -600 hPa, -800 hPa and -950
hPa.
The reference values and their uncertainties as well as
the difference uncertainty between the laboratory results
and the reference values were determined from the
measurement data by Monte Carlo simulations. Stability
uncertainty of the transfer standard was included in the
final difference uncertainty. Degrees of equivalences and
mutual equivalences between the laboratories were
calculated.
Each laboratory reported results for all twelve
measurement points, which means that there were 168
reported values in total. Some 163 of the 168 values (97
%) agree with the reference values within the expanded
uncertainties, with a coverage factor k = 2. Among the
laboratories, four different methods were used to
determine negative gauge pressure.
It is concluded that special attention must be paid to
the measurements and methods when measuring negative
gauge pressures. There might be a need for a technical
guide or a workshop that provides information about
details and practices related to the measurements of
negative gauge pressure, as well as differences between
the different methods.
The comparison is registered as EURAMET project no. 1170
and as a supplementary comparison EURAMET.M.P-S9 in the
BIPM key comparison database.
KW - comparison
KW - pressure
KW - negative gauge pressure
U2 - 10.1088/0026-1394/53/1A/07010
DO - 10.1088/0026-1394/53/1A/07010
M3 - Article
VL - 53
JO - Metrologia
JF - Metrologia
SN - 0026-1394
IS - Technical Supplement
M1 - 07010
ER -