Ansko, IlmarDuong, Thi Kim NganTartu Ülikool. Loodus- ja täppisteaduste valdkond2021-09-302021-09-302021http://hdl.handle.net/10062/74415This master’s thesis describes the in-lab validation of the electrically calibrated pyroelectric radiometer (ECPR). The ECPR was inter-compared with two reflection-type trap detectors, a FEL lamp, and an absolute electrical substitution pyrheliometer. All the instruments have valid calibration certificates. The measurement methods, uncertainty analysis, and results are presented. The ���� numbers in all cases were satisfying.engopenAccessAttribution-NonCommercial-NoDerivatives 4.0 Internationalelectrically calibrated pyroelectric radiometermetrologyOptical radiometryThesis