Ndeipi nzvimbo yekuyera uye chiyero chekudonha kwemvura?

Chiyero chemuyero chinoreva kukosha kwemusiyano uripo pakati pemiganhu yepamusoro neyapasi yenzvimbo yemhando yechinhu. Kana muganho wepasi wekuyera kwechishandiso uri zero, saka kukosha kukuru kwehuwandu hwemuviri hunogona kuyerwa kwakaenzana nenzvimbo yacho yekuyera. Semuenzaniso, chiyero chekuyera cheammeter ndicho chiyero chikuru chemagetsi chinogona kuyerwa.
Chiyero che turndown ndicho chiyero chehuwandu hwepamusoro hwekuyera kusvika pahuwandu hushoma hwekuyera hwechishandiso. Chiyero chikuru che turndown chinopa mukana wakawanda wekugadzirisa. Kana mamiriro ekushanda akachinja, zviri nyore kuchinja huwandu hwekuyera hwechishandiso pasina chikonzero chekutsiva chishandiso. Zvinogonawo kuderedza huwandu hwezvishandiso zvekuchengetedza zviripo, izvo zvinobatsira pakutarisira uye zvinobatsira kudzivirira kusarira kwemari. Nokudaro, chiyero che turndown chechishandiso chiratidzo chakakosha chehunyanzvi.
Pakusarudza mudziyo, hazvireve kuti chiyero chekudzora simba chikakura, ndipo panoshanda zvakanaka mudziyo wacho. Panewo pfungwa yehuwandu hwekushanda. Semuenzaniso, kune transmitter yekumanikidza ine huwandu hwekuyera hwe0~250 kPa, kana kumanikidzwa chaiko kwatinoyera kuri 60 kPa, huwandu hwekuyera hwakasarudzwa hunofanira kunge huri 0~100 kPa, uye huwandu uhwu ndihwo huwandu hwekushanda. Kana chiyero chekudzora simba che transmitter iyi iri 10:1, zvinoreva kuti, nepo tichiona kururama kwe transmitter yekumanikidza, huwandu hushoma hwekushanda hwatinogona kusarudza i0~25 kPa. Kana huwandu hwekushanda huri hudiki pane kukosha uku, kururama kwemudziyo kuchaderera. Zvisinei, kana huwandu hwekushanda huri pakati pe0~25 kPa ne0~250 kPa, kururama kwemudziyo kunogona kuvimbiswa. Saka, huwandu hwekushanda uye huwandu hwepamusoro hwekuyera hahufanirwe kusiyana zvakanyanya; zvikasadaro, kururama kwemudziyo kuchaderera.
Nezvemamita emvura inotonhora, chiyero chekuchinja kwemvura (turndown ratio) ndicho chiyero chechiyero chekuyerera kwemvura Q3 chinoshandiswa zvakanyanya kusvika pachiyero chekuyerera kwemvura (minimum flow rate) Q1, uye chinogonawo kumiririrwa nebhii R rinoteverwa nenhamba.