Optical Paramagnetic/Diamagnetic Gas Sensor.
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 paramagnetic/diamagnetic gas in the mixture. An optical source provides light to a movable element coupled to the chamber. In response to the application of a magnetic field across the chamber, any paramagnetic/diamagnetic gas in the chamber causes the 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 20, 1988
- Accession Number
- ADD013621
Entities
People
- Thomas G. Giallorenzi
Organizations
- United States Department of the Navy