Accession Number : ADD014368

Title :   Optical Paramagnetic/Diamagnetic Gas Sensor.

Descriptive Note : Patent filed 10 Feb 88, patented 24 Oct 89,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Giallorenzi, Thomas G

Report Date : 24 Oct 1989

Pagination or Media Count : 11

Abstract : An improved gas sensor which optically senses a signal indication proportional to the concentration of a paramagnetic/diamagnetic gas in a gaseous mixture. In a preferred embodiment of the invention a chamber is adapted to contain a gaseous mixture to be measured for the concentration of a para magnetic/diamagnetic gas in the mixture. An optical source provides light to a movable element to be displaced by a distance proportional to the concentration of the paramagnetic/diamagnetic gas in the gaseous mixture. A photodetector circuit receives light from the movable element having a characteristic indicative of the distance that the movable element was displaced. In response to such received light, the photodetector provides a signal output proportional to the concentration of the paramagnetic/diamagnetic gas in the gaseous mixture. (rrh)

Descriptors :   *PHOTODETECTORS, CIRCUITS, DIAMAGNETISM, GAS DETECTORS, GASES, MIXTURES, MOBILE, OUTPUT, PARAMAGNETISM, SIGNALS

Subject Categories : Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE