TY - JOUR
T1 - Paramagnetic oxygen measurement using an optical-fiber microphone
AU - Tsai, Cheng Lun
AU - Fann, Chi Shyan
AU - Wang, Shyh Hau
AU - Fung, Rong Fong
N1 - Funding Information:
The authors would like to thank the Synchronous Radiation Research Center of the National Science Council of Taiwan for using their equipment. We are also in debt to Prof. Jiunn-Der Liao for his help in calibration. This project is partially supported by the Engineering School of Chung-Yuan Christian University and the National Science Council of Taiwan.
PY - 2001/3/10
Y1 - 2001/3/10
N2 - 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.
AB - 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.
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U2 - 10.1016/S0925-4005(00)00694-8
DO - 10.1016/S0925-4005(00)00694-8
M3 - Article
AN - SCOPUS:0034831782
SN - 0925-4005
VL - 73
SP - 211
EP - 215
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
IS - 2-3
ER -