“Izinga lokugeleza kokuqala” (elibizwa ngokuthi i-Q₁ ezindinganisweni ze-metrological) lichazwa njengezinga eliphansi lokugeleza kwamanzi lapho imitha yamanzi emishini ingaqala khona ukujikeleza kwendlela yayo yokulinganisa yangaphakathi (isb., impeller) futhi yenze isilinganiso sevolumu esisebenzayo.
Izidingo zobuchwepheshe ezibalulekile zichazwe kanje:
- Esilinganisweni sokuqala sokugeleza Q₁, iphutha lokulinganisa lemitha kumele lihambisane nemikhawulo echazwe yikilasi layo lokunemba (isb., ±5% yamamitha ekilasi 1 kanye ±3% yamamitha ekilasi 2 nge-ISO 4064-1:2014).
- Imitha kufanele ibonise ukuqala okubucayi ngaphandle kokuminyana noma i-hysteresis, iqinisekise ukulinganiswa okuthembekile kwezimo zokugeleza eziphansi kakhulu (njengamanzi aconsayo) ezivame ukusetshenziswa ezindlini noma kwezentengiselwano ezilula.
- Inani lesilinganiso sokugeleza kokuqala linqunywa ngokuhlolwa okujwayelekile, okudinga ukuthi imitha ibhalise ivolumu ehlanganisiwe njalo lapho amanzi egeleza ku-Q₁, ngaphandle kokubambezeleka okukhulu noma ukwehluleka ukuqala ukulinganisa.
Lezi zidingo zibalulekile ekuvimbeleni ukusetshenziswa kwamanzi okungabhalwanga phansi kanye nokuqinisekisa ukuthi imitha iyahambisana nemithethonqubo ye-metrology esemthethweni.
Isikhathi sokuthunyelwe: Novemba-18-2025