Ukumelana kwePlatinamu, owaziwa nangokuthi iplatinamu yokumelana nokushisa, inani layo lokumelana lizoshintsha ngamazinga okushisa. Futhi inani lokumelana lokumelana kweplatinamu lizonyuka njalo ngokwanda kokushisa.
Ukumelana kwePlatinamu kungahlukaniswa ngemikhiqizo ye-PT100 ne-PT1000 yochungechunge, i-PT100 isho ukuthi ukumelana kwayo ku-0 ℃ ngu-100 ohms, i-PT1000 isho ukuthi ukumelana kwayo ku-0 ℃ yi-1000 ohms.
Ukumelana kwePlatinamu kunezinzuzo zokumelana nokuvinjwa okuhle, ukunemba okuphezulu, ukumelana kakhulu, njll. Isetshenziswa ekubalweni kokushisa, i-satellite, isimo sezulu, ukubalwa kokumelana neminye imishini yokushisa ephezulu.
Izinzwa zokushisa ze-PT100 noma ze-PT1000 zisezinzwa ezijwayelekile kakhulu embonini yezenqubo. Njengoba zisezinzwa zombili ze-RTD, isifinyezo se-RTD simele "umtshina wokumelana" wokumelana ". Ngakho-ke, inzwa yokushisa lapho ukumelana kuncike ekushiseni; Lapho izinga lokushisa lishintsha, ukumelana kwenzwa sekuzoshintsha. Ngakho-ke, ngokulinganisa ukumelana kwenzwa ye-RTD, ungasebenzisa inzwa ye-RTD ukukala izinga lokushisa.
Izinzwa ze-RTD zivame ukwenziwa ngeplatinamu, ithusi, ama-alloys we-nickel noma ama-oxide ahlukahlukene wensimbi, futhi i-PT100 ingenye yezinzwa ezivame kakhulu. IPlatinamu iyinto evame kakhulu yezinzwa ze-RTD. IPlatinamu inobudlelwano bokumelana obunokwethenjelwa, obungaphindaphindeki futhi obucacile. Izinzwa ze-RTD ezenziwe ngeplatinamu zibizwa ngokuthi ama-PRTS, noma "iplatinamu yokumelana ne-thermometer." Inzwa ye-PRT esetshenziswa kakhulu embonini yenqubo yinzwa ye-PT100. Inombolo "100" egameni ikhombisa ukumelana kwama-100 ohms ku-0 ° C. (32 ° F) okukhulunywe ngaye egameni. Isibonelo, inzwa ye-PT1000 inokumelana nama-1000 ohms ku-0 ° C. Uma kungukuthi i-PT1000) ine-385. Uma i-coefflent evamile ayikakhulunywa ngayo, kuvame ukuba khona 385.
Umehluko phakathi kwe-PT1000 ne-PT100 Apristors imi ngale ndlela elandelayo:
1. Ukunemba kuhlukile: Ukuzwela kokuphendula kwe-PT1000 kuphakeme kunalokho kwe-PT100. Izinga lokushisa le-PT1000 lishintsha ngezinga elithile, futhi inani lokumelana liyanyuka noma linciphe cishe ngama-3.8 ohms. Izinga lokushisa le-PT100 lishintsha nge-degree eyodwa, futhi inani lokumelana liyanyuka noma linciphe cishe ngama-0,38 ohms, ngokusobala 3.8 ohms kulula ukukala ngokunembile, ngakho-ke ukunemba nakho kuphakeme futhi.
2. Ibanga lokushisa lokulinganisa lihlukile.
I-PT1000 ilungele isilinganiso esincane sokushisa; I-PT100 ilungele ukukala izilinganiso ezinkulu zokushisa.
3. Intengo yehlukile. Intengo ye-PT1000 iphakeme kunaleyo ye-PT100.
Isikhathi sePosi: Jul-20-2023