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The short-term performances of two independent gas modulated refractometers for pressure assessments
RISE Research Institutes of Sweden. Umeå University, Sweden.
Umeå University, Sweden.
Umeå University, Sweden.
Umeå University, Sweden.
Vise andre og tillknytning
2021 (engelsk)Inngår i: Sensors, E-ISSN 1424-8220, Vol. 21, nr 18, artikkel-id 6272Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Refractometry is a powerful technique for pressure assessments that, due to the recent redefinition of the SI system, also offers a new route to realizing the SI unit of pressure, the Pascal. Gas modulation refractometry (GAMOR) is a methodology that has demonstrated an outstanding ability to mitigate the influences of drifts and fluctuations, leading to long-term precision in the 10−7 region. However, its short-term performance, which is of importance for a variety of applications, has not yet been scrutinized. To assess this, we investigated the short-term performance (in terms of precision) of two similar, but independent, dual Fabry–Perot cavity refractometers utilizing the GAMOR methodology. Both systems assessed the same pressure produced by a dead weight piston gauge. That way, their short-term responses were assessed without being compromised by any pressure fluctuations produced by the piston gauge or the gas delivery system. We found that the two refractometer systems have a significantly higher degree of concordance (in the 10−8 range at 1 s) than what either of them has with the piston gauge. This shows that the refractometry systems under scrutiny are capable of assessing rapidly varying pressures (with bandwidths up to 2 Hz) with precision in the 10−8 range. © 2021 by the authors.

sted, utgiver, år, opplag, sider
MDPI , 2021. Vol. 21, nr 18, artikkel-id 6272
Emneord [en]
Fabry–Perot cavity, Gas modulation, Metrology, Modulation techniques, Pressure, Refractometry, Short-term performance, Gages, Pistons, Dead weights, Gas delivery system, Piston gauges, Pressure fluctuation, Short term, Refractometers
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Identifikatorer
URN: urn:nbn:se:ri:diva-56688DOI: 10.3390/s21186272Scopus ID: 2-s2.0-85115079918OAI: oai:DiVA.org:ri-56688DiVA, id: diva2:1604053
Merknad

Funding details: 2017-05013, 2018-04570, 2019-05029; Funding details: Horizon 2020 Framework Programme, H2020, 621-2015-04374, 621-2020-05105; Funding details: European Metrology Programme for Innovation and Research, EMPIR; Funding details: Kempestiftelserna, 1823, U12; Funding text 1: This project (QuantumPascal, 18SIB04) has received funding from the EMPIR programme co-financed by the Participating States and from the European Union?s Horizon 2020 research and innovation programme; Vetenskapsr?det (VR) (621-2015-04374 and 621-2020-05105); the Ume?University Industrial doctoral school (IDS-18); the Vinnova Metrology Programme (2017-05013, 2018-04570, and 2019-05029); the Kempe Foundations (1823.U12).

Tilgjengelig fra: 2021-10-18 Laget: 2021-10-18 Sist oppdatert: 2023-05-25bibliografisk kontrollert

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