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Active-cavity radiometer/pyroheliometerDevice, using specular black cavity heater, temperature sensors, and electronics and electrodeposited cavity/thermal impedance structures, can achieve + or - 0.1 percent long-term absolute uncertainty at solar constant level. Dual-cavity configuration helps decrease sensitivity for heat-sink temperature drift.
Document ID
19770000176
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Willson, R. C.
Date Acquired
August 8, 2013
Publication Date
September 1, 1977
Publication Information
Publication: NASA Tech Briefs
Volume: 2
Issue: 2
ISSN: 0145-319X
Subject Category
Physical Sciences
Report/Patent Number
NPO-13819
Accession Number
77B10176
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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