ISO 9846:2025
Current
The latest, up-to-date edition.
Solar energy — Calibration of a pyranometer using a pyrheliometer
Hardcopy , PDF
English
08-08-2025
This document specifies calibration methods for a pyranometer using a pyrheliometer as a reference instrument. Three methods are specified in this document.
Collimation tube method. In this method, the test pyranometer is mounted on a solar tracker and is equipped with a collimation tube designed to allow the test pyranometer to have the same geometric view as the reference pyrheliometer for a direct comparison of the two instruments.
The methods in this document are applicable for calibration of all pyranometers provided that a proper uncertainty evaluation is performed. Unlike spectrally flat pyranometers, non-spectrally flat pyranometers have a sensitivity that strongly depends on the solar spectrum. Therefore, the calibration result can be valid under a more limited range of conditions.
The result of a calibration is the instrument sensitivity accompanied by an uncertainty. This document includes suggestions for uncertainty evaluation.
| DocumentType |
Standard
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| Pages |
44
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
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| Supersedes |
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