Sonic Gas Analyzer for Measurement of CO2 in Expired Air
- 1 November 1957
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 28 (11) , 914-915
- https://doi.org/10.1063/1.1715763
Abstract
A sonic gas analyzer intended primarily for estimation of CO2 in the physiological range of 0–10% is described. The instrument uses a resonant cavity maintained in oscillation by a transistor amplifier as the measuring device; the change in frequency caused by the presence of CO2 in the cavity is linearly related to the amount of CO2 present. As described the instrument is intended for continuous sampling at a rate of about 2 l/min. The time of response is about 0.5 sec for full deflection.Keywords
This publication has 2 references indexed in Scilit:
- A Sensitive Versatile Acoustic Gas Analyzer Particularly Suitable for the Analysis of Anesthetic MixturesReview of Scientific Instruments, 1954
- A STUDY OF PHYSICAL METHODS FOR THE DETERMINATION OF THE TENSION OF ETHER VAPOR IN AIR–ETHER MIXTURESAnesthesiology, 1949