A transportable refractometer for assessment of pressure in the kPa range with ppm level precision

Authors

  • C. Forssén Department of Physics Umea University Umea and Measurement Technology, RISE Research Institutes of Sweden Boras
  • I. Silander Department of Physics Umea University Umea
  • D. Szabo Measurement Technology, RISE Research Institutes of Sweden Boras
  • G. Jönsson Measurement Technology, RISE Research Institutes of Sweden Boras
  • M. Bjerling Measurement Technology, RISE Research Institutes of Sweden Boras
  • T. Hausmaninger National Metrology Institute VTT MIKES Tekniikantie
  • O. Axner Department of Physics Umea University Umea
  • M. Zelan Measurement Technology, RISE Research Institutes of Sweden Boras

DOI:

https://doi.org/10.21014/acta_imeko.v9i5.986

Abstract

A transportable refractometer for assessment of kPa pressures with ppm level precision is presented. It is based on the GAs MOdulation Refractometry (GAMOR) methodology, making it resistant to fluctuations and drifts. At the National Metrology Institute at RISE, Sweden, the system assessed pressures in the 4.3 - 8.7 kPa range with sub-ppm precision (0.5 - 0.9 ppm). The system was thereafter disassembled, packed, and transported 1040 km to Umea University, where it, after unpacking and reassembling, demonstrated a similar precision (0.8 - 2.1 ppm). This shows that the system can be disassembled, packed, transported, unpacked, and reassembled with virtually unchanged performance.

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Published

2020-12-31

Issue

Vol. 9 No. 5 (2020): Special issue for TC3, TC5, TC16 and TC22

Section

Conference Submissions

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