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A PHOTO‐ELECTRIC DEVICE FOR USE WITH CLOSED‐CIRCUIT OXYGEN CONSUMPTION APPARATUS
Author(s) -
Wyatt D. G.
Publication year - 1961
Publication title -
quarterly journal of experimental physiology and cognate medical sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.925
H-Index - 101
eISSN - 1469-445X
pISSN - 0033-5541
DOI - 10.1113/expphysiol.1961.sp001529
Subject(s) - oxygen , spirometer , closed circuit , carbon dioxide , volume (thermodynamics) , materials science , electrical engineering , chemistry , engineering , physics , thermodynamics , meteorology , exhaled nitric oxide , airway , organic chemistry , bronchoconstriction
The volume of a closed‐circuit oxygen consumption apparatus is maintained constant by supplying sufficient oxygen from a motor‐operated pump, while expired carbon dioxide is absorbed. The present device enables the oxygen supply to be controlled by the deflection of the tidal air spirometer at the end of expiration. It requires little attention in use, is rapid in response, and maintains the circuit volume constant within close limits.