1.1 This test method has been harmonized with, and is technically equivalent to, ISO 9059. 1.2 Two types of calibrations are covered by this test method. One is the calibration of a secondary reference pyrheliometer using
ASTM
Standard Test Method for Calibration of Pyrheliometers by Comparison to Reference Pyrheliometers
STD-59143
2005
2010-12-01
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