Novel primary standard for dynamic pressure up to 500 MPa

Richard Högström*, Antti Lakka, Jussi Hämäläinen, Leevi Salonen, Adam Brzozowski

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Dynamic pressure measurements at high pressures, up to 500 MPa, are relevant for testing the performance and safety of ammunition, explosives, and weapons. Current primary standards for realizing dynamic pressure are laborious to use, making them impractical for daily calibration work. Consequently, industry still calibrates sensors using static methods, which can result in errors up to 10 %. A new design of a drop-weight device was developed by VTT MIKES, the National Metrology Institute of Finland, to overcome these issues. Based on this novel design, a high-pressure primary standard up to 500 MPa was developed for GUM, the National Metrology Institute of Poland. In this paper, the design principles and initial test results are presented together with a preliminary uncertainty budget. Based on this study, an uncertainty level of 0.9 % (k = 2) is achieved, which is a significant improvement compared to current state-of-the-art of around 2 %.

Original languageEnglish
Article number101686
JournalMeasurement: Sensors
DOIs
Publication statusAccepted/In press - 2025
MoE publication typeA1 Journal article-refereed

Keywords

  • Calibration
  • Drop-weight method
  • Dynamic pressure
  • High pressure
  • Primary standard

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