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Development of a high-concentration hydrogen sensor and a gas sensor test bench Fan, Lilian Lai Yee
Abstract
Resistive hydrogen gas sensors based on palladium-hydrogen (Pd-H2) interactions were fabricated and tested. This thesis presents expected resistance characteristics for these sensors, and describes their fabrication process. Test results and analysis identified the H2 sensing mechanisms in these sensors. In particular, linearity between sensor resistance and the approximate atomic hydrogen content in the Pd was established, and the estimated proportionality constant obtained is 2.7± 0.9 (a.u.). A low flow rate sensor test bench featuring a line-switching mechanism was designed and built also. A description of the test bench and its operation principles are discussed. Response times obtained from initial tests of the un-optimized system is 16s ± 9s, comparable to the system response time of a commercial gas sensor test station presently available. Recommendations for future work to optimize this test bench are discussed, as are recommendations for future sensor design and development.
Item Metadata
Title |
Development of a high-concentration hydrogen sensor and a gas sensor test bench
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
2007
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Description |
Resistive hydrogen gas sensors based on palladium-hydrogen (Pd-H2) interactions were fabricated and tested.
This thesis presents expected resistance characteristics for these sensors, and describes their fabrication
process. Test results and analysis identified the H2 sensing mechanisms in these sensors. In particular,
linearity between sensor resistance and the approximate atomic hydrogen content in the Pd was established,
and the estimated proportionality constant obtained is 2.7± 0.9 (a.u.). A low flow rate sensor test bench
featuring a line-switching mechanism was designed and built also. A description of the test bench and its
operation principles are discussed. Response times obtained from initial tests of the un-optimized system is
16s ± 9s, comparable to the system response time of a commercial gas sensor test station presently available.
Recommendations for future work to optimize this test bench are discussed, as are recommendations for
future sensor design and development.
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Genre | |
Type | |
Language |
eng
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Date Available |
2011-03-15
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0074519
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.