SR03 is the fastest ISO Second Class compliant pyranometer on the market. Due to cutting-edge advances in thermopile sensing technology, the SR03 achieves a record-breaking 95% response time in just 1 second. The SR03 pyranometer is optimally suited for PV performance validation applications, where long-term stability and synchronous response time between the PV module/array and pyranometer are required.

The SR03 solar radiation sensor serves to measure the solar radiation flux that is incident on a plane surface in Wm^-2 from a 180 degrees field of view (also called “global” solar radiation). Its scientific name is pyranometer. Working completely passive, using the total new type of thermopile sensor, SR03 generates a small output voltage proportional to this flux. Contrary to photodiode-based and “black and white” instruments SR03 has a spectrally flat response across the full solar spectrum.

SR03 pyranometer can be used for general meteorological observations, building physics, climate- and solar collector testing. However, because of its fast response time, it is ideally suited for PV application, where it will match the response time of the panels more closely than other types. Also use on ships and airplanes in conjunction with tilt sensors is a possibility. Applicable standards are ISO 9060 and 9847, WMO (World Meteorological Organisation), and ASTM E824-05.