Gas Correction Factors for Vacuum Pressure Gauges: Factors Affecting the Sensitivity of Ionisation and Thermal Type Vacuum Gauges with Different Gases. (April 2017)

• Record Type: Journal Article
• Authors: Grinham, Rebecca; Chew, Andrew
• Is Part Of: Vakuum in Forschung und Praxis. Volume 29:Number 2(2017)
• Page Start: 25
• Page End: 30
• Publication Date: 2017-04
• Subjects: Vacuum technology -- Periodicals; 621.55
• DOI: 10.1002/vipr.201700640
• Languages: English
• ISSNs: 0947-076X

Abstract

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.