Schelt Technology

LPPIRG01 pyrgeometer measures the far infrared radiation (FIR). The measures arereferred to radiations with wavelength greater than 4.5 μm.The far infrared radiation derives from the measure of the thermopile output signal andfrom the knowledge of the instrument temperature. The temperature is measured witha 10 kΩ NTC inserted in the body of the pyrgeometer.The pyrgeometer can be used also for energy balance studies. In this case, besidesanother pyrgeometer which measures infrared radiation upwards, it is necessary analbedometer (LPPYRA05, LPPYRA06 or LPPYRA11) for measuring the short wavelengthsradiation (<3 μm).