Izindinganiso zephutha elikhulu elivunyelwe (i-MPE) zamamitha amanzi asebenza ngomshini zihlukaniswa ngokusekelwe ezicacisweni zobuchwepheshe zomhlaba wonke/zesifunda (isb., i-ISO 4064, i-OIML R49) kanye nezigaba zokunemba kwamamitha, ngokuhlukaniswa okuncike kakhulu kumabanga okugeleza kanye nezinhlobo zamamitha (uhlobo lwevolumu noma lwe-turbine).
Ukuhlukaniswa kwephutha elikhulu elivunyelwe (i-MPE) lamamitha amanzi asebenza ngomshini kuhambisana nezindinganiso eziqashelwa emhlabeni wonke njenge-ISO 4064 (Inhlangano Yomhlaba Wonke Yokumisa) kanye ne-OIML R49 (Inhlangano Yomhlaba Wonke Yokumisa Imithetho). Izimiso eziyinhloko zokuhlukaniswa yilezi ezilandelayo:
- Incazelo Yekilasi Lokunemba: Amamitha amanzi asebenza ngomshini ahlukaniswe ngezigaba zokunemba (isb., Ikilasi 1, Ikilasi 2 ngokwe-ISO 4064-1) ngokusekelwe ekusebenzeni kwawo kokulinganisa. Ikilasi ngalinye lichaza imikhawulo ye-MPE ephoqelekile kuzo zonke izikhawu zesilinganiso sokugeleza ezihlukile.
- Ukwahlukaniswa Kwezikhawu Zokugeleza: Ububanzi bokugeleza kokusebenza kwemitha yamanzi buhlukaniswe ngezikhawu ezimbili ezibalulekile: “ububanzi bezinga lokugeleza eliphansi” (kusukela esilinganisweni sokugeleza esincane Q₃ kuya esilinganisweni sokugeleza esiguqukayo Q₂) kanye “nobubanzi bezinga lokugeleza eliphezulu” (kusukela ku-Q₂ kuya esilinganisweni sokugeleza okugcwele Q₄).
- Ukucaciswa Komkhawulo we-MPE: Kumamitha e-Class 1, i-MPE ingu-±5% ngaphakathi kwebanga lokugeleza eliphansi kanye no-±2% ngaphakathi kwebanga lokugeleza okuphezulu. Kumamitha e-Class 2, i-MPE ingu-±3% ebangeni lokugeleza eliphansi kanye no-±2% ebangeni lokugeleza okuphezulu. Le mikhawulo iqinisekisa ukuthembeka kokulinganisa okuqhubekayo kuzo zonke izimo zokusetshenziswa kwangempela.
- Izidingo Ezikhethekile Zamamitha Amancane Obubanzi: Kumamitha amanzi asekhaya anobubanzi obuncane (isb., ububanzi obujwayelekile ≤15 mm), imibandela eyengeziwe ingasebenza ephutheni "lesilinganiso sokugeleza esincane (Q₃)" ukuqinisekisa ukulinganiswa okunembile kwezimo zokugeleza okuphansi noma okuconsayo.
Zonke izinhlobo zenzelwe ukuhambisana namaphethini okusetshenziswa kwamanzi asebenzayo, ukulinganisa ukunemba kokulinganisa kanye nokwenzeka kokusebenza kwe-metrology esemthethweni kanye nokusetshenziswa kwezentengiselwano.
Isikhathi sokuthunyelwe: Novemba-18-2025