Ewe. Ii-flowmeters ze-ultrasonic ezihamba ngendlela enye zihlala zilinganisa isantya sokuhamba embindini wepayipi zize ziyiguqulele kwisantya sokuhamba esiqhelekileyo kuyo yonke icandelo lepayipi zisebenzisa "i-average velocity coefficient." Le coefficient isekelwe ekucingeni "kokuhamba okuphuhlileyo ngokupheleleyo" (apho isantya silandela ukusasazwa kwe-logarithmic). Nangona kunjalo, kwiipayipi ezinkulu, xa isantya sokuhamba siphantsi (kwiimeko ze-laminar okanye ze-low-turbulence ezinenombolo yeReynolds < 2300), ukusasazwa kwesantya kusondela kwimo ye-parabolic. Ngenxa yoko, impazamo yokuguqulwa kweemitha zendlela enye (ukusuka kwisantya sembindi ukuya kwisantya esiphakathi) iyanda ukusuka kwi-±1% ukuya ngaphezulu kwe-±3%.
Ngokwahlukileyo koko, ii-flowmeters ezineendlela ezininzi (umz., iindlela ezi-4 okanye iindlela ezi-8) zilinganisa isantya sokuhamba kwiindawo ezahlukeneyo zeradial kwaye zibale umyinge olinganisiweyo, onokuphinda ngokuchanekileyo usasazo lwesantya esinqamlezileyo. Nokuba phantsi kweemeko zokuhamba okuphantsi, ukuchaneka kwazo kunokuhlala kuzinzile ngaphakathi kwe-±0.5%.
Ngoko ke, xa kulinganiswa imidiya yesantya esiphantsi (njengakwiinethiwekhi zokuhambisa amanzi okanye iipayipi eziphambili zelindle) kwimibhobho emikhulu, inzuzo yokuchaneka kweemitha zokuhamba kwamanzi ezininzi iba sobala ngakumbi njengoko isantya sokuhamba kwamanzi sincipha.
Ixesha leposi: Sep-25-2025