Ukulinganisa ubushushu yenye yezona zinto zibalulekileyo kulawulo lwenkqubo phakathi kwamashishini. I-Resistance Temperature Detector (RTD) kunye ne-Thermocouple (TC) zezona zinzwa zobushushu zisetyenziswa kakhulu. Ngayinye yazo inomgaqo wayo wokusebenza, uluhlu lokulinganisa olufanelekileyo kunye neempawu. Ukuqonda ngokupheleleyo iimpawu zazo kunceda ekususeni amathandabuzo nasekuthatheni isigqibo esinolwazi malunga nolawulo lwenkqubo. Njengokuba umntu esenokuzibuza ukuba angakhetha njani indawo yokutshintsha xa isixhobo sangoku se-RTD sifuna ukutshintshwa, ngaba olunye uxhathiso lobushushu lungaba lulungile okanye i-thermocouple ingcono.
I-RTD (Isikhangeli soBushushu bokuxhathisa)
I-RTD isebenza ngomgaqo wokuba ukumelana kombane kwezinto zesinyithi kuyatshintsha ngokweqondo lobushushu. Ngokwesiqhelo yenziwe ngeplatinum, i-RTD Pt100 ibonisa ubudlelwane obuqikelelweyo nobuphantse bube mgca phakathi kokuxhathisa kunye nobushushu apho i-100Ω ihambelana ne-0℃. Ubushushu obusebenzayo be-RTD bumalunga ne--200℃ ~ 850℃. Nangona kunjalo, ukuba umlinganiselo wokulinganisa uwela ngaphakathi kwe-600℃ ukusebenza kwayo kunokuphuculwa ngakumbi.
I-thermocouple
I-Thermocouple sisixhobo esisetyenziselwa ukulinganisa ubushushu ngesiphumo se-seebeck. Sineentsimbi ezimbini ezahlukeneyo ezidityaniswe kwicala ngalinye. Kuveliswa i-voltage ehambelana nomahluko wobushushu phakathi kwe-heated junction (apho kuthathwa khona umlinganiselo) kunye ne-cold junction (ehlala igcinwa njengobushushu obuphantsi). Ngokwendibaniselwano yezinto ezisetyenzisiweyo, i-thermocouple inokwahlulwa ibe ziindidi ezininzi ezichaphazela ububanzi bobushushu bayo kunye novakalelo. Umzekelo, i-Type K (NiCr-NiSi) yanele ukusetyenziswa ukuya kuthi ga kwi-1200℃ ngelixa i-Type S (Pt10%Rh-Pt) inokukwazi ukulinganisa ukuya kuthi ga kwi-1600℃.
Uthelekiso
Uluhlu lokulinganisa:I-RTD isebenza kakhulu phakathi kobude bexesha ukusuka kwi -200~600℃. I-Thermocouple ifanelekile kubushushu obuphezulu obuphezulu ukusuka kwi-800~1800℃ kuxhomekeke kwisiphelo, kodwa ayikhuthazwa ngokubanzi ukuba ilinganiswe ngaphantsi kwe-0℃.
Ixabiso:Iintlobo eziqhelekileyo ze-thermocouple zihlala zibiza kancinci kune-RTD. Nangona kunjalo, ukugqitywa okuphezulu kwe-thermocouple eyenziwe ngezinto ezixabisekileyo kunokuba nexabiso eliphantsi, kwaye ixabiso layo linokuguquguquka ngokwemarike yesinyithi esixabisekileyo.
Ukuchaneka:I-RTD yaziwa ngokuchaneka okuphezulu nokuphindaphindeka, ibonelela ngokufundwa kobushushu okuchanekileyo kulawulo oluqinileyo lobushushu olufuna usetyenziso. I-Thermocouple ngokubanzi ayichanekanga kangako kune-RTD kwaye ayinobuchule kakhulu kwisithuba sobushushu obuphantsi (<300℃). Ukugqiba izifundo eziphezulu bekuya kuphucula ukuchaneka.
Ixesha Lokuphendula:I-Thermocouple inexesha lokuphendula elikhawulezayo xa ithelekiswa ne-RTD, nto leyo eyenza ukuba ikwazi ukumelana neemeko ezinzima apho ubushushu butshintsha ngokukhawuleza.
Isiphumo:Isiphumo sokuxhathisa se-RTD sidla ngokubonisa ukusebenza okungcono kukuzinza kwe-long-tern kunye nokuhambelana kunesignali ye-voltage ye-thermocouple. Iziphumo zazo zombini iintlobo ze-sensor yobushushu zinokuguqulwa zibe yisignali yangoku ye-4~20mA kunye nonxibelelwano olukrelekrele.
Ukusuka kulwazi olungentla singagqiba kwelokuba into ebalulekileyo ekukhetheni phakathi kwe-RTD kunye ne-thermocouple bubude bobushushu bokusebenza obumele bulinganiswe. I-RTD yeyona sensor ikhethwayo kuluhlu lobushushu obuphantsi ngenxa yokusebenza kwayo okuphezulu, ngelixa i-thermocouple inamandla kakhulu phantsi kobushushu obuphezulu obungaphezulu kwama-800℃. Sibuyele kwisihloko, ngaphandle kokuba kukho uhlengahlengiso okanye ukuphambuka kubushushu bokusebenza kwenkqubo, ukutshintshwa kwe-thermocouple akunakwenzeka ukuba kubangele inzuzo enkulu okanye uphuculo oluvela kwisicelo sokuqala se-RTD. Zive ukhululekile ukuqhagamshelana nathi.Shanghai Wangyuanukuba kukho nayiphi na enye inkxalabo okanye imfuno malunga ne-RTD kunye ne-TR.
Ixesha leposi: Disemba-30-2024