Paramagnetic oxygen measurement using an optical-fiber microphone

Cheng Lun Tsai, Chi Shyan Fann, Shyh Hau Wang, Rong Fong Fung

研究成果: Article

5 引文 斯高帕斯(Scopus)

摘要

The oxygen molecule has a strong paramagnetic property compared with other gases. Several methods have been developed to detect oxygen concentration in the air based on this property. In this study, an alternative magnetic field was used to generate an acoustic air pressure signal. This pressure signal is proportional to oxygen concentration in the air, and it is treated as an index of oxygen concentration. To prevent interference of magnetic field on the air pressure sensor, an optical-fiber microphone was used to detect the magneto-acoustic signal. This measurement system was calibrated by gas samples with known oxygen concentrations, and the correlation coefficient of calibration is over 0.99. Mainstream measurement could be possible by using this type of sensing probe.

原文English
頁(從 - 到)211-215
頁數5
期刊Sensors and Actuators, B: Chemical
73
發行號2-3
DOIs
出版狀態Published - 2001 三月 10

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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