Looking for the ultimate pyrheliometers to measure direct solar energy? Enter DR30-D1 and DR20-A1.

The newly extended DR-series range, with superior heating, offers the highest accuracy and data availability

Pyrheliometers are direct (normal incidence) solar radiation sensors, used in outdoor PV / CPV and CSP system performance monitoring, solar energy surveys and scientific meteorological and climate observations. A pyrheliometer is usually used in tracker-mounted operation, to keep the instrument aimed at the sun.

With the introduction of the new Class A DR20-A1 pyrheliometer, we now offer a complete range of advanced solar radiation sensors. All ISO 9060:2018 spectrally flat, from Class A to C, and with unique features and user benefits. Pyrheliometers, measuring direct solar irradiance (DNI), are used in tracker-mounted operation. The newly extended DR-series range is equipped with superior window heating for the highest data availability.

DR20-A1 pyrheliometer is a spectrally flat Class A sensor offering analogue output. Pyrheliometer model DR30-D1 offers the highest accuracy (Class A, like DR20-A1) but with digital Modbus output and an internal tilt sensor to check tracker performance.