The Hukseflux SR12 is the only COTS performance-validated, First Class pyranometer meeting and exceeding the sensor performance requirements per the latest ASTM E2848-11 Standard (Standard Test Method for Reporting Photovoltaic Non-Concentrator System Performance). Unlike other non-validated First Class models, the directional response of every SR12 is documented during production, ensuring each SR12 pyranometer meets or exceeds ISO-9060 First Class directional response specification criteria. The SR12 pyranometer is also equipped standard with a case temperature sensor per ASTM E2848-11 recommendation, allowing for in-situ or post process correction for even the smallest temperature bias effects, independent of operating temperature. SR12 also features a low-power, 12-volt, 1.6-watt resistive heater for dew/frost prevention and sensor optics anti-soiling. The SR12 is ideally suitable for GHI, Diffuse, and POA irradiance measurement research.
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