An Integrating Sphere for Pyranometer Calibration

J. R. Latimer Meteorological Service of Canada, Toronto, Ontario

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Abstract

An integrating sphere which can be used to calibrate pyranometers such as the Eppley pyrheliometer (180° Weather Bureau type) is described. The integrating sphere makes it possible for one man to calibrate a dozen or more pyranometers in a day against a standard. Experience to date has shown that the calibration is reproducible to better than 0.5 per cent.

Abstract

An integrating sphere which can be used to calibrate pyranometers such as the Eppley pyrheliometer (180° Weather Bureau type) is described. The integrating sphere makes it possible for one man to calibrate a dozen or more pyranometers in a day against a standard. Experience to date has shown that the calibration is reproducible to better than 0.5 per cent.

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