Ukumelana nePlatinam, okwakwaziwa ngokuba yiplatinam ukumelana nobushushu, ixabiso layo lokumelana nalo liya kutshintsha ngobushushu.Kwaye ixabiso lokumelana neplatinam liya kunyuka rhoqo ngokunyuka kweqondo lokushisa.
Ukumelana nePlatinum kunokwahlulwa kwiimveliso ze-PT100 kunye ne-PT1000, i-PT100 ithetha ukuba ukuxhathisa kwayo kwi-0℃ yi-100 ohms, i-PT1000 ithetha ukuba ukuchasana kwayo kwi-0℃ yi-1000 ohms.
Ukumelana nePlatinum kuneenzuzo zokuxhathisa i-vibration, ukuzinza okulungileyo, ukuchaneka okuphezulu, ukuchasana noxinzelelo oluphezulu, njl.
I-PT100 okanye i-PT1000 izinzwa zobushushu zizinto eziqhelekileyo zoluvo kwishishini lenkqubo.Kuba zombini zingabenzi boluvo be-RTD, isishunqulelo se-RTD simele “isibonisi sobushushu esixhathisayo”.Ngoko ke, inzwa yokushisa apho ukuchasana kuxhomekeke kwiqondo lokushisa;Xa iqondo lokushisa litshintsha, ukuchasana kwenzwa kuya kutshintsha kwakhona.Ke ngoko, ngokulinganisa ukuxhathisa kwe-RTD sensor, ungasebenzisa inzwa yeRTD ukulinganisa ubushushu.
Izinzwa ze-RTD zihlala zenziwe ngeplatinum, ithusi, i-nickel alloys okanye i-oxides yensimbi eyahlukeneyo, kunye ne-PT100 yenye yezona zinzwa eziqhelekileyo.Iplatinam yeyona nto ixhaphakileyo kwi-RTD sensors.IPlatinam inobudlelwane obuthembekileyo, obuphindaphindwayo kunye nomgca wokumelana nobushushu.Izivamvo zeRTD ezenziwe ngeplatinam zibizwa ngokuba yi-PRTS, okanye "iithemometha zokumelana neplatinam."Inzwa ye-PRT esetyenziswa ngokuqhelekileyo kwishishini lenkqubo yinzwa ye-PT100.Inani "100" egameni libonisa ukuxhathisa kwe-100 ohms ku-0 ° C (32 ° F).Okunye ngaloo nto kamva.Ngelixa i-PT100 isesona sivamvo seplatinam RTD/PRT, kukho ezinye ezininzi, ezifana ne-PT25, PT50, PT200, PT500, kunye ne-PT1000.Umehluko omkhulu phakathi kwezi zinzwa kulula ukuqikelela: oku kukuchasana kwenzwa kwi-0 ° C, ekhankanywe egameni.Ngokomzekelo, inzwa ye-PT1000 inokumelana ne-1000 ohms kwi-0 ° C.Kwakhona kubalulekile ukuqonda i-coefficient yokushisa kuba ichaphazela ukuchasana kwamanye amaqondo okushisa.Ukuba yi-PT1000 (385), oku kuthetha ukuba inomlinganiselo wobushushu ongu-0.00385°C.Ehlabathini lonke, inguqu eqhelekileyo ngu-385. Ukuba i-coefficient ayikhankanywanga, idla ngokuba yi-385.
Umahluko phakathi kwe-PT1000 kunye ne-PT100 Resistors ume ngolu hlobo lulandelayo:
1. Ukuchaneka kuyahluka: Uvakalelo lokuphendula lwe-PT1000 luphezulu kunolo lwe-PT100.Ubushushu be-PT1000 buguquka ngedigri enye, kwaye ixabiso lokumelana landa okanye liyancipha malunga ne-3.8 ohms.Ubushushu be-PT100 buguquka ngeqondo elinye, kwaye ixabiso lokumelana landa okanye liyancipha malunga ne-0.38 ohms, ngokucacileyo i-3.8 ohms ilula ukulinganisa ngokuchanekileyo, ngoko ukuchaneka kuphezulu.
2. Uluhlu lweqondo lokushisa luhlukile.
I-PT1000 ifanelekile kumlinganiselo omncinci weqondo lokushisa;I-PT100 ifanelekile ukulinganisa imilinganiselo yobushushu boluhlu olukhulu.
3. Ixabiso lahlukile.Ixabiso le-PT1000 liphezulu kunelo le-PT100.
Ixesha lokuposa: Jul-20-2023