CIPM MRA COMPARISON REPORTS

KEY COMPARISON

APMP.M.P-K4

Pressure measurements in gas (absolute mode)

H.W. Song , K. Arai , M. Kojima , S.J. Chen , A. Kumar , S. Phanakulwijit , J. Pitakarnnop , Y. Yang , H. Yu

Citation H.W. Song et al 2026 CIPM MRA Comparison reports 07005

https://doi.org/10.59161/BIVK7818

Authors

Han Wook Song Korea Research Institute of Standards and Science (KRISS) Korea, Republic of

Kenta Arai National Metrology Institute of Japan (NMIJ AIST) Japan

Momoko Kojima National Metrology Institute of Japan (NMIJ AIST) Japan

Sheng-Jui Chen Industrial Technology Research Institute/Center for Measurement Standards (CMS/ITRI) Chinese Taipei

Ashok Kumar CSIR National Physical Laboratory of India (NPLI) India

Suwat Phanakulwijit National Institute of Metrology (Thailand) (NIMT) Thailand

Jeerasak Pitakarnnop National Institute of Metrology (Thailand) (NIMT) Thailand

Yuanchao Yang National Institute of Metrology (NIM) China

Hongyan Yu National Institute of Metrology (NIM) China

Abstract

The report summarizes the Asia-Pacific Metrology Programme (APMP) key comparison APMP.M.P-K4 for absolute pressure spanning the range of 1 Pa to 10 kPa which was carried out at six National Metrology Institutes (NMIs: NMIJ, CMS/ITRI, NPLI, NIMT, NIM and KRISS) during the period of January 2018 to July 2019. The comparison was made via a calibrated transfer standard measured at each of the NMIs facilities using their laboratory standards. The transfer package constructed for this comparison performed as designed and provided a stable artifact to compare laboratory standards. Overall, the participants were found to be statistically equivalent to the key comparison reference value.

Note that this text is that which appears in Appendix B of the BIPM key comparison database https://www.bipm.org/kcdb/.

The final report has been peer-reviewed and approved for publication by the CCM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

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