NASA NTRS · 19680000160
Absolute low-pressure calibration system
Abstract
McLeod gage is used as the primary reference standard in a system used for absolute calibration of vacuum gages in the very low pressure range. The system involves steady-state flow of a gas through a cascade of differentially pumped chambers or stages connected by precisely defined orifices.
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Roehrig, J. R.. 1968-05-01. Absolute low-pressure calibration system. https://ntrs.nasa.gov/citations/19680000160
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