Accession Number : ADD001733

Title :   Detection of CO2 in a Hyperbaric Gaseous Environment.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Williams,Kevin G

Report Date : 27 Sep 1974

Pagination or Media Count : 23

Abstract : The patent application relates to the detection of CO2 by a sensor of miniature size which can be placed in a saturation diver's breathing apparatus. The monitor is an infrared source which emits radiaiton. It is transmitted through a chamber containing a mixed sample of gas. The gas is subjected to density modulation by a piston which compresses and expands the gas in the chamber in a precisely controlled manner. An infrared detector measures the amount of radiation passing through the gas so that the gas concentration is determined by the fractional change in radiation at the detector. The invention also includes a specific radiation detector for detecting the radiation and monitoring the total light flux reaching the detector.

Descriptors :   *CARBON DIOXIDE, *GAS DETECTORS, BREATHING APPARATUS, INFRARED RADIATION, PATENTS, DIVER EQUIPMENT, MONITORING, INFRARED DETECTORS, ABSORPTION SPECTRA, DENSITY, GASES

Subject Categories : Radiation and Nuclear Chemistry
      Life Support Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE