ULTRAVIOLET OXYGEN SENSOR
Abstract
The Ultraviolet Oxygen Sensor has been developed to quantitatively measure oxygen in a closed atmosphere. The essential elements of the instrument are: the ultraviolet source, an optical chopper, the sample cell, the photomultiplier tube, and the required electronic circuits. No monochromator or optical filter has been used. A Xenon discharge lamp with emission at 1470 angstroms is used with a sample path of 0.125 mm to provide a system sensitive to oxygen and insensitive to other gases found in a closed atmosphere environment. This configuration allows the use of a nondispersive optical system and an optical chopper to provide a double beam system. The oxygen concentration is determined by measuring the amount of energy absorbed through the sample cell. This measurement is compared to a reference signal obtained by directing the ultraviolet beam through an oxygen-free path to the photomultiplier. The electronic ratio of these two measurements results in a stable signal that is independent of variation in the source and detector.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1969
- Accession Number
- AD0690240
Entities
People
- Allen Kaplan
- Clint Jurgens
- Kang Yu