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A survey and analysis of commercially available hydrogen sensorsThe performance requirements for hydrogen detection in aerospace applications often exceed those of more traditional applications. In order to ascertain the applicability of existing hydrogen sensors to aerospace applications, a survey was conducted of commercially available point-contact hydrogen sensors, and their operation was analyzed. The operation of the majority of commercial hydrogen sensors falls into four main categories: catalytic combustion, electrochemical, semiconducting oxide sensors, and thermal conductivity detectors. The physical mechanism involved in hydrogen detection for each main category is discussed in detail. From an understanding of the detection mechanism, each category of sensor is evaluated for use in a variety of space and propulsion environments. In order to meet the needs of aerospace applications, the development of point-contact hydrogen sensors that are based on concepts beyond those used in commercial sensors is necessary.
Document ID
Document Type
Technical Memorandum (TM)
Hunter, Gary W.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
November 1, 1992
Subject Category
Instrumentation And Photography
Report/Patent Number
NAS 1.26:105878
Accession Number
Funding Number(s)
PROJECT: RTOP 590-21-11
Distribution Limits
Work of the US Gov. Public Use Permitted.
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