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题名: A new type of catalytic oxygen sensor based on the measurement of hydrogen-oxygen reaction heat
作者: Feng, T;  Chen, LX;  Yang, BC;  Guan, YF;  Ma, JP
关键词: oxygen sensor ;  oxygen-hydrogen reaction ;  thermal sensing resistor ;  catalysis
刊名: SENSORS AND ACTUATORS B-CHEMICAL
发表日期: 2004-04-15
DOI: 10.1016/S0925-4005(03)00627-0
卷: 99, 期:1, 页:14-17
收录类别: ISTP ;  SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Analytical ;  Electrochemistry ;  Instruments & Instrumentation
研究领域[WOS]: Chemistry ;  Electrochemistry ;  Instruments & Instrumentation
英文摘要: A new type of catalytic oxygen sensor based on the measurement of the hydrogen-oxygen reaction heat has been constructed and evaluated. The sensor consists of thin-film platinum resistors, which constituted a Wheatstone bridge circuit, a reaction cell containing catalyst particles, a reference cell containing inert packing material, hydrogen diffusing membrane assembly, and an isothermal block. The heat liberated by the reaction increases the temperature of the reaction cell, causing an increase of resistance of the Pt resistor, and as a result, the bridge circuit produces an output signal. The reference cell and the isothermal block used reduce the influence of fluctuation of temperature and pressure of the sample gas on the base line signal. The signal of the sensor is proportional to the concentration of oxygen in the range of 1-1200 ppm. The lowest detection limit is 1 ppm. The 90% response time of the sensor is less than 5 s. The sensor is characteristic of excellent signal stability, fast response speed and high sensitivity. (C) 2003 Published by Elsevier B.V.
语种: 英语
WOS记录号: WOS:000221398700003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139349
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dept Micro Instrumentat & Analyt Chem, Dalian 116012, Peoples R China

Recommended Citation:
Feng, T,Chen, LX,Yang, BC,et al. A new type of catalytic oxygen sensor based on the measurement of hydrogen-oxygen reaction heat[J]. SENSORS AND ACTUATORS B-CHEMICAL,2004,99(1):14-17.
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