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Gas Correction Factors for Vacuum Pressure Gauges
Author(s) -
Grinham Rebecca,
Chew Andrew
Publication year - 2017
Publication title -
vakuum in forschung und praxis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.213
H-Index - 13
eISSN - 1522-2454
pISSN - 0947-076X
DOI - 10.1002/vipr.201700640
Subject(s) - gauge (firearms) , pressure measurement , nitrogen gas , sensitivity (control systems) , mechanical engineering , chemistry , nitrogen , materials science , engineering , metallurgy , electronic engineering , organic chemistry
Abstract Vacuum pressure gauges will typically arrive from a manufacturer calibrated for nitrogen; for other gases, to avoid potentially significant measurement errors, a correction factor must be used to convert ‘measured’ or ‘indicated’ pressure to ‘true’ pressure. The correction factors used are influenced by a large number of factors and these vary with gauge type. In this article the factors leading to varying gauge sensitivity with different gases are examined and values for correction factors provided by manufacturers and in literature are presented.