ISO/WD 24871-1

A working group has prepared a draft.

Abstract

This document specifies a series of test methods for pyranometers classified in ISO 9060:2018, covering test conditions, test equipment, operation procedures and data processing of multiple parameters, among which include sensitivity, response time, zero off-set, non-stability, nonlinearity, directional response, clear sky global horizontal irradiance spectral error, temperature response and tilt response. Test methods in this standard are applicable to all class of pyranometers based on thermoelectric and photoelectric principles covered in ISO 9060:2018. Also, the appendix of this standard provides examples of uncertainty evaluation for each parameter, which can be used as reference for manufacturers and instrument users.