Use the integrated compass on the Fluke IRR1-SOL Irradiance Meter to measure and document roof or site orientation.
+ First perform irradiance, temperature and inclination measurements with the meter turned on and aligned with the panel.
+ If the tilt is above 20 degrees, any compass reading will be inaccurate. The metal in the panel or other surrounding metal objects will also affect the compass reading. This is why another step is necessary to verify the direction.
+ Position the meter away from the panel and any other metal objects and with the tip of the meter facing in the same direction as the panel.
+ Confirm your compass reading.
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