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The Ejector Flowmeter as Air/Oxygen Mixing Device: An Apparatus Providing Gas Mixtures with Adjustable Oxygen Content for High‐Flow Humidification Systems
Author(s) -
Christensen K. Nørregaarad,
Waaben J.,
Jørgensen S.
Publication year - 1980
Publication title -
acta anaesthesiologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.738
H-Index - 107
eISSN - 1399-6576
pISSN - 0001-5172
DOI - 10.1111/j.1399-6576.1980.tb01512.x
Subject(s) - injector , oxygen , flow measurement , mixing (physics) , medicine , inlet , flow (mathematics) , anesthesia , mechanics , thermodynamics , mechanical engineering , chemistry , physics , organic chemistry , quantum mechanics , engineering
The ejector flowmeter is constructed for continuous removal of excess gas from anaesthetic circuits. This instrument can be used as an air/oxygen mixing device for high‐flow humidification systems in wards where compressed air is not available. Pure oxygen is used as driving gas through the ejector. A nomogram has been constructed to show the relationship between oxygen driving pressure, inlet of air to the flowmeter, F 1 O 2 and total outflow.