For use with Vantage Pro and Pro2. (Already included with Vantage Pro and Pro2 Plus.)
Measures solar radiation. Also required (along with an anemometer and a temperature/humidity sensor) if you wish to monitor evapotranspiration.
Diffuser element and housing are carefully designed for accurate cosine response. Silicon photo diode provides good match to solar spectrum. Two-piece housing minimizes radiation heating, allows convection cooling of the sensor, and prevents the trapping of water or dust. Includes built-in level and 3' (0.9 m) cable.
The 6450 is designed to be mounted on the (optional) 6673 Davis Sensor Mounting Shelf which is below in the "May we also suggest section".