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Paper Abstract and Keywords
Presentation 2013-01-24 11:00
Gas Concentration Measurement Using Ultrasonic
Hiroaki Fukuoka, Sekiyo Katsu, Yoshimine Kato, Masahiro Inoue (Kyushu Univ.), Hideaki Fujita (Oriimec Corp.) US2012-89
Abstract (in Japanese) (See Japanese page) 
(in English) Gas concentrations was successfully measured using the ultrasonic velocity difference. Each gas has its own specific value of sound velocity; therefore, when the gas is mixed, the sound velocity changes. The gas concentration was calculated from the difference in travelling time between a transmitter and a receiver before and after the gas mixture. The sound velocity in the gases are defined theoretically, thus the gas concentration can be accurately calculated by precise sound velocity measurements. This method can be also used as a standard gas concentration measurement. For example, the oxygen concentration in the air was measured as 20.991% which was close to the standard air value. It was also found that hydrogen concentration in the air can be detected within the range from 100ppm to 100%.
Keyword (in Japanese) (See Japanese page) 
(in English) Ultrasonic / Sound velocity / Gas concentration / Standard measurement / Hydrogen / Oxygen / Gas sensor /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 387, US2012-89, pp. 7-12, Jan. 2013.
Paper # US2012-89 
Date of Issue 2013-01-17 (US) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
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Conference Information
Committee US EA  
Conference Date 2013-01-24 - 2013-01-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Kambaikan, Doshisha Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) [Joint Meeting on Acoustics and Ultrasonics Subsociety] Engineering/Electro Acoustics, Ultrasonic and Underwater Acoustics,and Related Topics 
Paper Information
Registration To US 
Conference Code 2013-01-US-EA 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Gas Concentration Measurement Using Ultrasonic 
Sub Title (in English)  
Keyword(1) Ultrasonic  
Keyword(2) Sound velocity  
Keyword(3) Gas concentration  
Keyword(4) Standard measurement  
Keyword(5) Hydrogen  
Keyword(6) Oxygen  
Keyword(7) Gas sensor  
1st Author's Name Hiroaki Fukuoka  
1st Author's Affiliation Kyushu University (Kyushu Univ.)
2nd Author's Name Sekiyo Katsu  
2nd Author's Affiliation Kyushu University (Kyushu Univ.)
3rd Author's Name Yoshimine Kato  
3rd Author's Affiliation Kyushu University (Kyushu Univ.)
4th Author's Name Masahiro Inoue  
4th Author's Affiliation Kyushu University (Kyushu Univ.)
5th Author's Name Hideaki Fujita  
5th Author's Affiliation Oriimec Corporation (Oriimec Corp.)
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Speaker Author-1 
Date Time 2013-01-24 11:00:00 
Presentation Time 20 minutes 
Registration for US 
Paper # US2012-89 
Volume (vol) vol.112 
Number (no) no.387 
Page pp.7-12 
Date of Issue 2013-01-17 (US) 

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