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:

1989-10-24

Pagination or Media Count:

11.0

Abstract:

An improved gas sensor which optically senses a signal indication proportional to the concentration of a paramagneticdiamagnetic 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 magneticdiamagnetic 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 paramagneticdiamagnetic 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 paramagneticdiamagnetic 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