Kub khiav tshuab rau engineering plastics feem ntau khiav tsis tu ncua ntawm 300℃txog 400 degree. Cov xwm txheej hnyav li no ua rau lub neej luv luv ntawm cov qauv thermocouples. Dab tsi yog lub luag haujlwm tseem ceeb hauv kev ua haujlwm siab ntev -kub, thiab cov neeg siv tuaj yeem txhim kho kev ntseeg tau li cas?
Oxidation yog thawj qhov ua rau thermocouple tsis ua haujlwm ntawm qhov kub thiab txias. Tag nrho cov thermocouple alloys hnov mob nrog oxygen ntawm qhov kub siab, hloov lawv cov hluav taws xob tso zis. Hom K thermocouples tshwj xeeb tshaj yog raug kev txom nyem los ntawm oxidation ceev tshaj 350 degree, ua rau kom nrawm nrawm thiab qhov kawg tsis ua haujlwm.
High -kub vapor thiab tshuaj gases los ntawm molten plastics tawm tsam cov thermocouple hlws ris. Cov khoom siv ntxiv hauv PC, PBT, PA66, thiab PPS tso cov tshuaj corrosive uas ua rau lub ntsej muag sensor. Qhov kev yaig no hloov thermal teb thiab ua rau tsis ua tiav ntxov.
Thermal qaug zog los ntawm tas li expansion thiab contraction tsis muaj zog nyob rau hauv cov xov hlau. Txawm tias me me txhua hnub kub hloov pauv ua rau muaj kev ntxhov siab. Nyob rau lub hlis, qhov kev ntxhov siab no ua rau cov kev sib tshuam sab hauv lossis cov neeg siv hluav taws xob, ua rau muaj kev cuam tshuam tsis sib xws lossis ua tsis tiav.
Kev puas tsuaj rwb thaiv tsev tshwm sim thaum cov khoom siv cable tshaj lawv qhov ntsuas kub. Txheem rwb thaiv tsev chars, melts, los yog nkig, ua rau luv luv Circuit Court los yog teeb liab suab nrov. Tsuas yog siab -qib fluoropolymer los yog silicone-cov kab hluav taws xob muaj sia nyob tsis tu ncua kub kub.
Yas to thiab carbon buildup insulate lub thermocouple taub. Thaum yaj nkag mus rau hauv lub sensor bore, nws solidifies thiab tsim ib txheej uas txo cov teb. Tus maub los txhais qhov no raws li qhov ntsuas kub qis thiab ua kom sov, ua kom nrawm dua.
Kev tsim kho kev sib tshuam tsis zoo ua tsis tau raws li kev ntxhov siab heev. Pheej yig, tes-welded junctions degrade ntau sai dua precision laser-welded sawv daws yuav. Premium kub khiav thermocouples siv hermetically kaw junctions los tiv thaiv siab - kub instability.
Electromagnetic cuam tshuam phem zuj zus ntawm cov khoom siv hluav taws xob siab. Cov cua sov ua haujlwm ntawm qhov kub siab ua kom muaj zog tam sim no, tsim kom muaj zog hluav taws xob nrov. Unshielded thermocouples tsim cov ntawv nyeem tsis ruaj khov uas tshwm sim sai li sai tau.
Kev txhim kho kev ntxhov siab ua rau muaj kev puas tsuaj ntau dua ntawm qhov kub thiab txias. Tshaj -cov kev sojntsuam nruj nthuav dav thiab tawg, thaum xoob sojntsuam vibrate thiab hnav. Kev tsim nyog yuav ua tau tseem ceeb dua nyob rau hauv kev nruam thermal load.
Txhawm rau kom ntev lub neej nyob rau hauv siab -kub daim ntaub ntawv, cov neeg siv yuav tsum xaiv hom N los yog tshwj xeeb alloy thermocouples, siv high -kub cables, xyuas kom meej sealing, tsis txhob overheating, thiab ua calibration tsis tu ncua. Cov kauj ruam no txo qis qhov ua tsis tiav.
