In improved cavity radiometer, each sensor cone ends in small tube so that black paint cannot form truncating meniscus. Inner diameter of tube is 0.25 mm; its outer diameter is 0.5 mm. During painting process, excess paint is drawn out through tube, preventing formation of meniscus at apex. After paint is cured, end of tube is crimped shut to form effective light trap.
Improving Radiometer-Cavity Absorptance
NASA Tech Briefs ; 6 , 3
1982-12-01
Miscellaneous
No indication
English
NTRS | 1969
|Mariner-Mars absorptance experiment.
NTRS | 1966
|High-Absorptance Radiative Heat Sink
NTRS | 1983
|Active-cavity radiometer/pyroheliometer
NTRS | 1977
|Primary Absolute Cavity Radiometer
NTIS | 1969
|