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Two-Band Pyrometers Detect Hydrogen FiresTwo-band infrared pyrometers detect small hydrogen fires at greater distances in full daylight being developed. Detectors utilize part of infrared spectrum in which signals from hydrogen flames 10 to the 3rd power to 10 to the 4th power times as intense as ultraviolet region of current detectors. Utilize low-loss infrared lenses for focusing and for limiting fields of view to screen out spurious signals from nearby sources. Working distances of as much as 100 meters possible. Portable, battery-powered unit gives audible alarm, in form of increase in frequency of tone, when aimed at hydrogen fire.
Document ID
19930000457
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Collins, J. David
(NASA John F. Kennedy Space Center, Cocoa Beach, FL.)
Youngquist, Robert C.
(Boeing Aerospace Operations, Inc.)
Simmons, Stephen M.
(Boeing Aerospace Operations, Inc.)
Date Acquired
August 16, 2013
Publication Date
August 1, 1993
Publication Information
Publication: NASA Tech Briefs
Volume: 17
Issue: 8
ISSN: 0145-319X
Subject Category
Physical Sciences
Report/Patent Number
KSC-11576
Accession Number
93B10457
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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