Net irradiance meter, 4-sensor (2 pyranometers and 2 pyrgeometers) for measuring the net radiation between 0,3 µm and 45 µm

4-component net-radiometer for the measurement of the net radiation between 0.3 μm and 45 μm The net-radiometer consists of two pyranometers (one for the measurement of the global radiation and the other one for the measurement of the reflected solar radiation) and a pair of pyrgeometers (one for the measurement of the infrared radiation emitted by the sky and the other one for the infrared emitted by the ground surface)