If you monitor, install, maintain or check the performance of solar panels or a photovoltaic system, the Fluke IRR1-SOL Radiation Meter gives you the 4 critical measurements you need in one easy-to-use instrument. Take direct measurements to determine the number of watts per square metre of solar radiation, as required by standard IEC 62446-1. Measure temperature by placing the meter directly on the panel or by connecting the external probe. Find the wind direction with the compass and check the tilt angle of a roof or panel with the tilt function. Obtain all the essential photovoltaic measurements needed to install, monitor and report on the performance of a photovoltaic system in one instrument.