Mid ka mid ah Noocyada Dareemayaasha Heerkulka Guud——Dareemka Iska caabinta Platinum

Iska caabinta Platinum, oo sidoo kale loo yaqaan caabbinta kulaylka platinum, qiimihiisu caabbinta ayaa isbeddeli doona heerkulka. Iyo qiimaha caabbinta caabbinta platinum ayaa si joogto ah u kordhin doonta kororka heerkulka.

caabbinta Platinum waxaa loo qaybin karaa PT100 iyo PT1000 taxanaha alaabta, PT100 ka dhigan tahay in ay iska caabin at 0℃ waa 100 ohms, PT1000 ka dhigan tahay in ay iska caabin at 0℃ waa 1000 ohms.

Iska caabbinta Platinum waxay leedahay faa'iidooyinka caabbinta gariirka, xasilloonida wanaagsan, saxnaanta sare, iska caabinta cadaadiska sare, iwm. Waxaa si weyn loogu isticmaalaa caafimaadka, mashiinka, warshadaha, xisaabinta heerkulka, dayax-gacmeedka, cimilada, xisaabinta iska caabinta iyo qalabka kale ee heerkulka saxda ah.

Dareemayaasha heerkulka PT100 ama PT1000 ayaa ah dareemayaal aad caan u ah warshadaha geeddi-socodka. Maadaama ay labaduba yihiin dareemayaal RTD, soo gaabinta RTD waxay u taagan tahay "sheegaha heerkulka iska caabinta". Sidaa darteed, waa dareeraha heerkulka halka iska caabintu ay ku xiran tahay heerkulka; Marka heerkulku is beddelo, caabbinta dareemaha ayaa sidoo kale isbeddeli doonta. Sidaa darteed, adoo cabbiraya caabbinta dareeraha RTD, waxaad isticmaali kartaa dareemayaasha RTD si aad u cabbirto heerkulka.

Dareemayaasha RTD waxay inta badan ka samaysan yihiin platinum, copper, nikkel alloys ama okssaydh bir ah oo kala duwan, PT100 waa mid ka mid ah dareemayaasha ugu caansan. Platinum waa walxaha ugu caansan ee dareemayaasha RTD. Platinum waxay leedahay xiriir iska caabin heerkul ah oo la isku halayn karo, lagu celin karo iyo toosan. Dareemayaasha RTD ee ka sameysan platinum waxaa loo yaqaan PRTS, ama "heerarka iska caabinta platinum." Dareemaha PRT ee inta badan loo isticmaalo warshadaha geeddi-socodka waa PT100 dareeraha. Lambarka "100" ee magaca ayaa tilmaamaya caabbinta 100 ohms at 0 ° C (32 ° F) Wax badan oo ku saabsan taas ka dib. Halka PT100 uu yahay midka ugu caansan platinum RTD/PRT, waxaa jira dhowr kale, sida PT25, PT50, PT200, PT500, iyo PT1000: farqiga ugu weyn ee u dhexeeya dareemeyaashan 0°C, kaas oo lagu sheegay magaca, tusaale ahaan, PT1000 waxa uu leeyahay iska caabin ah 1000 ohms at 0°C waxa kale oo muhiim ah in la fahmo coefficient heerkulka sababtoo ah waxay saamaysaa iska caabin ah ee heerkulka kale (385), tani waxay ka dhigan tahay in uu leeyahay coefficient of 0.0038 ee caadiga ah. inta badan waa 385.

Farqiga u dhexeeya PT1000 iyo PT100 Resistors waa sida soo socota:

1. Saxnimadu way ka duwan tahay: Dareenka falcelinta PT1000 wuu ka sarreeyaa PT100. Heerkulka PT1000 wuxuu isbeddelaa hal darajo, qiimaha caabbintana wuu kordhiyaa ama hoos u dhacayaa qiyaastii 3.8 ohms. Heerkulka PT100 wuxuu isbeddelaa hal darajo, iyo qiimaha iska caabbinta ayaa kordhiya ama hoos u dhigaya qiyaastii 0.38 ohms, sida cad 3.8 ohms way fududahay in si sax ah loo cabbiro, sidaas darteed saxnaanta ayaa sidoo kale ka sareysa.

2. Heerkulka cabbiraadda waa ka duwan yahay.

PT1000 waxay ku habboon tahay cabbirka heerkulka kala duwan ee yar; PT100 waxay ku habboon tahay cabbiraadda cabbirrada heerkulka ballaaran.

3.Qiimaha waa kala duwan yahay. Qiimaha PT1000 wuu ka sarreeyaa PT100.