Āe. Ko ngā mita rere ultrasonic ara-kotahi te tikanga ka ine i te tere rere i waenganui o te paipa, kātahi ka huri ki te tere rere toharite puta noa i te whakawhiti o te paipa mā te whakamahi i te "tauwehenga tere toharite". Ko tēnei tauwehenga e hangai ana ki te whakaaro o te "rerenga kua tino whanake" (kei reira te tere e whai ana i te tohatoha logarithmic). Heoi, i roto i ngā paipa whānui-rahi, ina iti te tere rere (i roto i ngā āhuatanga laminar, iti-turbulence rānei me te tau Reynolds < 2300), ka tata te tohatoha tere ki te āhua parabolic. Nō reira, ka whānui te hapa tahuritanga o ngā mita ara-kotahi (mai i te tere pokapū ki te tere toharite) mai i te ±1% ki te neke atu i te ±3%.
He rerekē, ka inehia e ngā mita rere maha-ara (hei tauira, te ara-4, te ara-8 rānei) te tere rere i ngā tūranga radial rerekē, ā, ka tatauhia te toharite taumaha, ka taea ai te hanga anō i te tohatoha tere whakawhiti-wāhanga. Ahakoa i raro i ngā āhuatanga rere iti, ka taea tonu te pumau o tō rātou tika i roto i te ±0.5%.
Nō reira, ina inehia ngā mea tere-iti (pērā i ngā whatunga tuku wai, i ngā paipa matua paru rānei) i roto i ngā paipa whānui-rahi, ka kitea nuitia te painga tika o ngā mita rere maha-ara i te hekenga o te tere rere.
Wā tuku: Hepetema-25-2025