20.500.12556/RUL-128018 Umerjanje Pitotove merilne cevi za merjenje hitrosti zraka Calibration of Pitot tube for measurements of air velocity Za merjenje hitrosti tekočine v praksi pogosto uporabljamo Pitotove merilne cevi. Umerjanje le-teh se izvaja v vetrovniku, kjer se referenčna hitrost zraka načeloma določa z etalonskim LDA-merilnim sistemom, namen kalibracije pa je določitev merilnega pogreška med izmerjeno hitrostjo zraka z merilnim sistemom s Pitotovo cevjo in referenčno hitrostjo oziroma določitev kalibracijskega faktorja merilne cevi. V diplomskem delu smo z upoštevanjem zahtev relevantne literature opredelili splošen postopek umerjanja Pitotove merilne cevi za merjenje hitrosti zraka. V skladu z definiranim postopkom smo izvedli tudi konkreten primer kalibracije merilne cevi, za izvedbo katere smo postavili tudi ustrezen merilni sistem. Skozi nalogo smo opisali vse postopke, ki so pomembni pri umerjanju merilne cevi, na koncu pa smo rezultate praktične kalibracije ustrezno obdelali in predstavili. Pitot tube is often used for fluid velocity measurement. Calibration of Pitot tube is performed in wind tunnel, with standard LDA – measurement system. The purpose of calibration is to determine measurement error between indicated and reference air speed or to determine calibration factor of the measurement tube. In this thesis, by taking into account relevant references, we defined the general process of calibration of Pitot measurement tube for the purpose of air velocity measurement. In line with the defined process, we performed a concrete example of calibrating measurement tube, for which we had to set up suitable measurement system. Throughout the thesis, all the important procedures for calibrating the measurement tube are described. In the end, the results of the practical implementation of calibration are adequately discussed and presented. Pitotova cev diferencialni tlak hitrost zraka umerjanje kalibracijski faktor. Pitot tube differential pressure air velocity calibration calibration factor. true false false [L. Šepec ] Slovenski jezik Angleški jezik Diplomsko delo/naloga 2021-07-01 08:30:40 2021-07-01 08:30:43 2023-11-29 13:26:59 0000-00-00 00:00:00 2021 0 Ljubljana 0 XXII, 48 str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1970-01-01 533.6.07:53.089.6(043.2) 228955 70864899 7279.pdf 7279.pdf 1 A0D7B470983F839063A690C10C784435 68cb7c557b8b251c315c503e8db29299851ef83557eacd4409ae2cb26c4c9083 bf433879-da35-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=144644 Fakulteta za strojništvo 0 0 0