GSO ISO 9847:2024

ISO 9847:2023
Gulf Standard   Current Edition · Approved on 14 October 2024

Solar energy — Calibration of pyranometers by comparison to a reference pyranometer

GSO ISO 9847:2024 Files

GSO ISO 9847:2024 Scope

This document specifies two preferred methods for the calibration of pyranometers using reference pyranometers; indoor (Type A) and outdoor (Type B).

Indoor or type A calibration, is performed against a lamp source, while the outdoor method B, employs natural solar radiation as the source.

Indoor calibration is performed either at normal incidence (type A1), the receiver surface perpendicular to the beam of the lamp or under exposure to a uniform diffuse lamp source using an integrating sphere (type A2).

Outdoor calibration is performed using the sun as a source, with the pyranometer in a horizontal position (type B1), in a tilted position (type B2), or at normal incidence (type B3).

Calibrations according to the specified methods will be traceable to SI, through the world radiometric reference (WRR), provided that traceable reference instruments are used.

This document is applicable to most types of pyranometers regardless of the type technology employed. The methods have been validated for pyranometers that comply with the requirements for classes A, B and C of ISO 9060. In general, all pyranometers may be calibrated by using the described methods, provided that a proper uncertainty evaluation is performed.

Unlike spectrally flat pyranometers, non-spectrally flat pyranometers might have a spectral response that varies strongly with the wavelength even within the spectral range from 300 to 1 500 nm, and therefore the calibration result may possibly be valid under a more limited range of conditions.

The result of a calibration is an instrument sensitivity accompanied by an uncertainty. This document offers suggestions for uncertainty evaluation in the annexes.

Best Sellers From Metrology Sector

GSO OIML R87:2021
OIML R87:2016 
Gulf Standard
Quantity of product in prepackages
BH GSO OIML R87:2022
OIML R87:2016 
Bahraini Standard
Quantity of product in prepackages
GSO OIML R79:2021
OIML R79:2015 
Gulf Standard
Labeling requirements for prepackages
BH GSO OIML R79:2022
OIML R79:2015 
Bahraini Standard
Labeling requirements for prepackages

Recently Published from Metrology Sector

GSO IEC 62055-31:2024
IEC 62055-31:2022 
Gulf Standard
Electricity metering - Payment systems - Part 31: Particular requirements - Static payment meters for active energy (classes 0,5, 1 and 2)
GSO ISO 16399:2024
ISO 16399:2023 
Gulf Standard
Agricultural irrigation equipment — Meters for irrigation water
GSO ISO 19749:2024
ISO 19749:2021 
Gulf Standard
Nanotechnologies — Measurements of particle size and shape distributions by scanning electron microscopy
GSO ISO 4373:2024
ISO 4373:2022 
Gulf Standard
Hydrometry — Water level measuring devices