Isitshisi sobushushu bokumelana (RTD), ekwaziwa ngokuba yi-thermal resistance, sisivamvo sobushushu esisebenza ngokomgaqo wokulinganisa ukuba ukumelana nombane kwezinto ze-sensor chip kuyatshintsha ngobushushu. Olu phawuyenza i-RTD ibe sisiva-luvo esithembekileyo nesichanekileyo sokulinganisa ubushushu kwiindawo ezahlukeneyo zokusebenza kwemizi-mveliso. Xa idityaniswe kwisidluliseli sobushushu, iba sisixhobo esinamandla sokujonga nokulawula ubushushu kwiinkqubo kunyezidlala indima ebalulekileyo kwiinkqubo zolawulo lweenkqubo zoshishino.
I-Pt100 yenye yezona zinto zidumileyo zokumelana nobushushu ezenziwe ngeplatinum kule mihla. Enye yeenzuzo zokusebenzisa ii-sensor zobushushu ze-Pt100 kukuchaneka kwazo okuphezulu. Ezi sensor zenzelwe ukubonelela ngemilinganiselo yobushushu echanekileyo,ukuzenza zifaneleke kwiindawo zoshishino okanye zelebhu ezifuna kakhulu. Nokuba kukujonga umphunga womoya, ulwelo, okanye iigesi, izinzwa zePt100 zinokubonelela ngokufundwa okuchanekileyo, ukuqinisekisa ukuba iinkqubo zihamba kakuhle nangokufanelekileyo.Izinzwa ziyaziwa nangokuhlala ixesha elide. Zenzelwe ukumelana neemeko ezinzima zendalo, nto leyo ezenza zibe zilungele ukusetyenziswa kwiindawo zoshishino apho ukuguquguquka kobushushu kunye nokuchatshazelwa ziikhemikhali okanye ubumanzi kubangelwaOlu lwakhiwo luqinileyo luqinisekisa ukuba izinzwa zePt100 zinokuqhubeka nokubonelela ngemilinganiselo echanekileyo nokuba kwiimeko zokusebenza ezinzima.
Aumthumeli wobushushuiyakwazi ukuguqula ukumelana kwe-sensor ye-Pt100 ibe sisignali eqhelekileyo ye-4-20mA, enokudluliselwa kwiinkqubo zolawulo zokubeka esweni kunye nokulawula inkqubo. Olu sebenzi lwenza ukuba ii-transmitters zobushushu ze-Pt100 zibe zizinto ezibalulekileyo kwiinkqubo zolawulo lwe-industrial automation kunye neenkqubo zolawulo, okuvumela ukuhlanganiswa okungenamthungo nezixhobo kunye neenkqubo ezikhoyo. Xa kuqwalaselwa ukusetyenziswa kwe-transmitter yobushushu ye-RTD, kufuneka kuthathelwe ingqalelo iiparameter ezininzi ezibalulekileyo. Ezi ziquka uqhagamshelo lwenkqubo, ubunzulu bokufakwa, kunye nobubanzi bentonga, okunokuchaphazela kakhulu ukuchaneka kunye nokuthembeka kokulinganiswa kobushushu. Ngaphezu koko, imveliso ikwafumaneka kwiinketho ezichasene nokuqhuma kunye ne-thermowell, ukuqinisekisa ukhuseleko kunye nokuqina kwiindawo zoshishino ezinzima..Iinketho zesignali yemveliso ziquka i-4-20mA, i-RS-485, kunye ne-HART protocol, okwenza izixhobo zihambelane neenkqubo ezahlukeneyo zolawulo lwemizi-mveliso.
Thina, iShanghai Wangyuan Instruments of Measurement Co., Ltd., lishishini eliphambili laseTshayina eliphambili kwezobuchwepheshe obuphezulu eligxile kubuchwepheshe bokulawula iinkqubo zoshishino kunye neemveliso kangangeminyaka emininzi kwaye linikezela ngeenkonzo ezikumgangatho ophezulu ezinokwenziwa ngokwezifiso.izidluliseli ze-temperatruekunye ne-Pt100 sensor element yokubonelela ngeemfuno ezithile zesiza ngasinye soshishino.
Ixesha lokuthumela: Disemba-22-2023