Mipimo yepamusoro inobvumidzwa yekukanganisa (MPE) yemamita emvura emakanika inorongwa zvichienderana nehunyanzvi hwepasi rose/dunhu (semuenzaniso, ISO 4064, OIML R49) uye makirasi ekururama kwemamita, nekupatsanurwa kunonyanya zvichienderana nehuwandu hwekuyerera kwemvura uye mhando dzemita (mhando yevolumetric kana turbine).
Kurongwa kwezvikanganiso zvinobvumidzwa zvakanyanya (MPE) zvemamita emvura emakanika kunotevedzera mitemo inozivikanwa pasi rose yakaita seISO 4064 (International Organisation for Standardization) uye OIML R49 (International Organization of Legal Metrology). Nheyo huru dzekurongwa ndeidzi dzinotevera:
- Tsanangudzo yeKirasi Yekunyatsojeka: Mamita emvura emuchina akakamurwa kuita makirasi ekunyatsojeka (semuenzaniso, Kirasi 1, Kirasi 2 pa ISO 4064-1) zvichienderana nekushanda kwawo pakuyera. Kirasi yega yega inotsanangura miganhu yeMPE inosungirwa pakati penguva dzakasiyana dzekuyerera kwemvura.
- Kupatsanurwa kweFlow Rate Interval: Kuyerera kwemvura muchimiro chemvura kwakakamurwa kuita zvikamu zviviri zvakakosha: "low flow rate range" (kubva paminiti yekuyerera kwemvura Q₃ kusvika patransitional flow rate Q₂) uye "high flow rate range" (kubva paQ₂ kusvika paoverload flow rate Q₄).
- Kutsanangurwa kweMuganhu weMPE: Kune mamita eKirasi 1, MPE iri ±5% mukati mehuwandu hwekuyerera kwakaderera uye ±2% mukati mehuwandu hwekuyerera kwakakwirira. Kune mamita eKirasi 2, MPE iri ±3% muhuwandu hwekuyerera kwakaderera uye ±2% muhuwandu hwekuyerera kwakakwirira. Miganhu iyi inoita kuti kuyerwa kwakasimba kuenderane nemamiriro ezvinhu chaiwo ekushandiswa.
- Zvinodiwa Zvakakosha zveMamita Madiki eDhayamita: Kune mamita emvura emumba ane dhayamita diki (semuenzaniso, dhayamita ≤15 mm), zvimwe zvinhu zvinogona kushanda kune "muyero wepasi wekuyerera (Q₃)" kuti ive nechokwadi chekuyera kwakarurama kwemamiriro ekuyerera kwemvura kana kudonha kwemvura.
Mapoka ese akagadzirirwa kuti aenderane nemapatani ekushandisa mvura anoshanda, achienzanisa kunyatsoyera nekugona kushanda kwemetrology yepamutemo uye kushandiswa mubhizinesi.
Nguva yekutumira: Mbudzi-18-2025