As a patented meteorological instrument, built-in heaters are designed for long-term outdoor testing, and can also be used as a halo ring sunlight intensity meter, a day thermometer or a traditional sunlight recorder, and can work at any Earth's latitude.

Meteorological research: solar radiation, solar photovoltaic power generation, climate change, air pollution, sunshine hours, cloud volume research

Agricultural and Plantaceae: ET and thermal flux studies, canopy analysis and model studies

Architecture and Building Design: Building Management Systems

PV efficiency and energy balance

Total radiation and scattering accuracy: ±5% (daily integral), ±5% ±10W/m²(Hourly average)

Resolution: 0.6 W/m²= 0.6MV

Measurement range: 0 ~>2000 W/m²

Correspondence of analog output: 1mV = 1 W/m²

Analog output range: 0~2500 mV

Sunshine state limit: 120 W/m2 guide beam

Accuracy state accuracy: ±10%

Cosine correction accuracy: ±2% of incident light at the top angle 0-90°

Azimuth accuracy: ±5% (360° rotation)

Temperature drift coefficient: ±0.02% / ℃

Working temperature range: -20~+70℃

Spectral response: 400~2700nm

Change in spectral sensitivity: 10% (typical)

Dimensions: Diameter 140 mm x height 100 mm

Weight: 940g

Origin:Delta-T, UK