Gas concentration measurment using ultrasonic

Author

Fukuoka, Hiroaki ; Inoue, Masahiro ; Kato, Yoshimine ; Fujita, Hideaki

Author_Institution

Dept. Automotive Sci. & Eng., Kyushu Univ., Fukuoka, Japan

fYear

2012

fDate

2-5 Oct. 2012

Firstpage

67

Lastpage

68

Abstract

We propose to use the speed of ultrasonic to measure the absolute values of gas concentration. This method can detect the gas concentration using the sound speed of difference of each gas and calculate the absolute values of its concentration. It is possible to measure it without calibration and inexpensively using this method. In this study, we demonstrated oxygen and hydrogen concentration measurements in nitrogen base gas. The error of oxygen concentration measurement was about 2.0 % in the temperature varying condition. On the other hand the error of hydrogen measurement was about 0.1% even in the temperature variation from -10 to 50°C.

Keywords

chemical variables measurement; gas sensors; hydrogen; nitrogen; oxygen; ultrasonic measurement; H₂; N₂; O₂; gas concentration measurment; measurement error; sound speed difference; temperature -10 C to 50 C; ultrasonic measurement; Nitrogen; Temperature measurement; Ultrasonic variables measurement; gas concentration measurment; hydrogen; oxygen; ultrasonic;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics (GCCE), 2012 IEEE 1st Global Conference on

Conference_Location

Tokyo

Print_ISBN

978-1-4673-1500-5

Type

conf

DOI

10.1109/GCCE.2012.6379951

Filename

6379951