Thermocouple tsis ua hauj lwm yog ib qho ntawm feem ntau ua rau kub khiav instability, ua rau kub drift, inconsistent molding, heater puas, thiab unplanned downtime. Txawm hais tias lawv cov qauv yooj yim, cov thermocouples ua haujlwm hauv cov xwm txheej tsis zoo. Vim li cas lawv feem ntau tsis ua haujlwm hauv qhov chaw kub kub, thiab cov hauv paus ntsiab lus twg yuav tsum engineers tsom rau kev txhim kho kev ntseeg tau?
High -kub oxidation yog ib qho ua rau cov thermocouple degradation. Feem ntau cov tshuab khiav kub ua haujlwm tsis tu ncua ntawm 200℃thiab 350 degree, thiab qee yam khoom siv yas yuav tsum tau kub dua. Sij hawm dhau los, tus qauv K thermocouples raug oxidation, tshwj xeeb tshaj yog nyob rau hauv qhov chaw kaw tsis zoo, ua rau cov teeb liab drift thiab nyeem tsis raug. Kev siv cov qib qis-qib alloys ua rau qhov tsis ua tiav.
Kev puas tsuaj rau lub cev thiab kev ntxhov siab feem ntau cuam tshuam cov thermocouple probes lossis cables. Thaum lub sij hawm pwm los ua ke, txij nkawm, los yog hloov lub nozzle, sensors tej zaum yuav crushed, khoov, los yog tshaj -tightened. Kev vibration los ntawm kev txhaj tshuaj molding tshuab kuj tseem ua rau cov kev sib tshuam sab hauv lub sijhawm, ua rau muaj kev sib txuas tsis tu ncua.
Molten plastic penetration yog ib qho teeb meem tshwm sim hauv kev siv kub khiav. Yog hais tias lub nozzles los yog sealing Cheebtsam hnav tawm, yas yaj tuaj yeem xau rau hauv cov thermocouple bores. Thaum cov yas solidifies nyob ib ncig ntawm qhov kev sojntsuam, nws insulates lub sensor, ua rau ncua sij hawm los yog tsis tseeb ntsuas kub. Hauv qhov xwm txheej hnyav, cov yas corrosion puas ua rau lub thermocouple hlws ris mus tas li.
Thermal cycling qaug zog txo qis kev pab cuam lub neej. Txhua lub voj voog molding kawm cov thermocouples kom ceev cua sov thiab txias. Rov qab nthuav dav thiab contraction strain sab hauv xov hlau thiab rwb thaiv tsev, nws thiaj li ua rau hlau tawg lossis teeb liab poob.
Kev teeb tsa tsis raug yog qhov tseem ceeb tiv thaiv tsis tau. Thermocouples tso dhau xoob dhau los tsim cov pa tawm, txo qhov ua haujlwm. Cov ntxig nruj dhau tuaj yeem deform nyob rau hauv tshav kub, ua rau qhov kev sib tshuam ntawm kev hnov suab. Qhov tsis raug qhov tob qhov chaw kuj ua rau kev ntsuas yuam kev.
Rwb thaiv tsev tawg tshwm sim thaum siab -kub cables degrade. Pheej yig los yog tsis tsim nyog cov ntaub ntawv rwb thaiv tsev yaj los yog char nyob rau hauv lub caij ntuj sov, ua rau luv luv Circuit Court los yog tsis ruaj tsis khov teeb liab. Qhov no yog qhov tshwj xeeb tshaj yog nyob rau hauv cov tshuab uas tsis muaj cua sov cais tawm.
Electromagnetic cuam tshuam (EMI) los ntawm lub tshuab cua sov, lub cev muaj zog, thiab cov tswj tuaj yeem cuam tshuam cov teeb liab thermocouple. Yog tsis muaj kev tiv thaiv zoo, cov sensors xa cov ntawv nyeem tsis ruaj khov, ua rau qhov kub thiab txias tsis zoo.
Kev kis kab mob los ntawm cov khoom siv yas, xws li iav fiber ntau, nplaim hluav taws, thiab cov stabilizers, accelerates sensor corrosion. Cov additives no abrade thiab tshuaj tua cov thermocouple probes, tshwj xeeb tshaj yog thaum kub.
Hom thermocouple tsis sib haum thiab cov tswv yim tswj xyuas ua rau kev nyeem tsis raug. Piv txwv li, siv hom J sensors nrog Hom K inputs ua rau muaj qhov sib txawv ntawm qhov kub thiab txias, uas cov neeg ua haujlwm feem ntau txhais yuam kev raws li qhov tsis ua haujlwm sensor.
Thaum kawg, qis- kev tsim khoom zoo ua rau ua tsis tiav thaum ntxov. Tsis zoo welded junctions, nyias sheath ntaub ntawv, thiab substandard calibration ua rau luv luv lifespan. Premium kub khiav hom siv cov thermocouples siv zog tsim tshwj xeeb los tiv thaiv cov hom tsis ua haujlwm.
Kev nkag siab txog cov txheej txheem tsis ua haujlwm no tso cai rau cov tuam txhab xaiv cov khoom siv ruaj khov dua, txhim kho kev teeb tsa, thiab siv kev tiv thaiv kev tiv thaiv. Txhim khu kev qha thermocouples ncaj qha txo qis qis thiab txhim kho kev ruaj ntseg ntau lawm.
