Vim li cas Thermocouple Accuracy txiav txim siab muaj cua sov System ua haujlwm ruaj khov
Muaj cov tshuab hluav taws xob cua sov ua haujlwm ua cov khoom siv thermal ua rau kev tsim khoom, aerospace, kev ua zaub mov thiab kev lag luam tshiab, tab sis kev ua haujlwm ruaj khov feem ntau yog to taub yuam kev rau kev vam khom tag nrho ntawm cov cua sov raj zoo thiab lub zog ruaj khov. Cov ntaub ntawv ua haujlwm loj ua pov thawj tias ntau dua 70% ntawm cov cua kub hloov pauv tsis zoo suav nrog kev hloov pauv kub, tsis sib xws thermal hluav taws xob thiab kev siv hluav taws xob ntau dhau los ntawm qhov ntsuas kub tsis raug tawm tswv yim los ntawm qhov tsis sib xws, kev laus lossis cov khoom siv thermocouple tsis raug. Raws li cov tub ntxhais ntsuas qhov ntsuas kub ntawm qhov kaw - lub voj cua sov tswj tshuab, thermocouple ua haujlwm tseem ceeb ntawm kev hloov cov cim thermal rau hauv cov cim hluav taws xob uas paub tau rau cov tswj ntse, uas nws qhov kev ua tau zoo ncaj qha tswj hwm tag nrho cov cua sov system qhov tseeb, ruaj khov thiab kev pabcuam lub voj voog. Tsis quav ntsej cov thermocouple txuam thiab kev saib xyuas yuav ua rau kom txo qis cov khoom lag luam, nce nqi khiav lag luam thiab cov khoom siv tsis tu ncua.
Thermocouple ua haujlwm raws li Seebeck thermoelectric effect, lub cev ruaj khov tshwm sim tsim los ntawm ob qhov sib txawv ntawm cov hlau hlau uas muaj qhov sib txawv ntawm cov khoom siv hluav taws xob. Thaum ob qhov kawg ntawm kev sib txuas ntawm cov hlua hlau sib txuas ua rau lub kaw lus kaw thiab tswj qhov sib txawv ntawm qhov sib txawv ntawm ob qhov sib txuas, cov zis hluav taws xob txuas ntxiv thiab tawm millivolt yuav raug tsim tawm, thiab tus nqi hluav taws xob sib raug zoo rau qhov ntsuas kub hloov pauv hauv qhov chaw ruaj khov. Lub hauv paus ntsiab lus ua haujlwm no ua rau cov thermocouple nrog cov txiaj ntsig tshwj xeeb xws li ultra- qhov ntsuas kub ntawm qhov dav, qhov muaj zog ntawm cov qauv kev cuam tshuam thiab zoo heev - qhov kub thiab txias, uas tsis tuaj yeem sib phim los ntawm cov khoom ntsuas kub ib txwm muaj xws li thermal resistors thiab bimetallic sensors. Tsis zoo li kev tiv tauj sensors uas ua rau tsis ua hauj lwm nyob rau hauv siab - kub thiab siab - kev co ib puag ncig lossis tsis yog - cov sensors raug cuam tshuam rau ib puag ncig, thermocouple hloov mus rau kev ua haujlwm nyuaj thiab txhawb nqa ntev - lub sijhawm ntsuas kub tsis cuam tshuam.
Kev lag luam daim ntawv thov kev xyaum qhia tau hais tias cov qauv thermocouple sib txawv muaj qhov sib txawv ntawm qhov kub thiab txias ib puag ncig, thiab kev sib txuam thoob ntiaj teb yuav ua rau muaj kev cuam tshuam thiab cov cuab yeej tsis ua haujlwm. Hom K thermocouple, cov qauv kev lag luam tseem ceeb tshaj plaws, txais cov khoom siv nickel-chromium alloy raw khoom, npog qhov kub ntawm -200℃txog 1260 degree, nrog kev ua haujlwm ruaj khov hauv cov pa hluav taws xob cua sov, cov khoom ziab thiab cov khoom siv thermal kho qhov xwm txheej thiab cov nqi zoo rau kev lag luam loj. Hom J thermocouple nta zoo heev qis-oxygen tiv thaiv- oxidation kev ua tau zoo, haum rau nruab nrab- qhov kub thiab txias ib puag ncig qis dua 750 degree, thiab yog dav siv hauv kev ua hlau thiab cov khoom siv cua sov. Cov hlau zoo nkauj thermocouple suav nrog Hom S, Hom R thiab Hom B yog kho rau ultra- qhov kub thiab txias ua haujlwm siab tshaj 1600 degree, siv platinum-rhodium alloy cov ntaub ntawv los tswj cov teeb liab ruaj khov nyob rau hauv high-temperature industrial furnaces thiab aerospace thermal control equipment, txawm tias cov khoom siv thiab cov nqi ua haujlwm ntau dua.
Feem ntau ntawm -qhov teeb meem ntawm qhov chaw cua sov tsis ruaj khov tshwm sim los ntawm tsis yog- daim ntawv thov thermocouple es tsis yog cov khoom tsis zoo. Ntau qhov chaw tsim khoom siv cov khoom siv stainless hlau sheath thermocouple zoo tib yam nyob rau hauv siab - corrosion, lub tshuab nqus tsev thiab muaj zog vibration ua haujlwm ib puag ncig, ua rau kev sojntsuam oxidation sai, sab hauv insulating hmoov tsis ua hauj lwm thiab thermal teeb liab drift tom qab luv luv - lub sijhawm ua haujlwm. Kev teeb tsa tsis raug cai kuj ua rau qhov ntsuas kub tsis zoo. Thermocouple probes muab tso rau ze ze rau ib leeg - lub taub hau cua sov raj ntes cov hauv zos siab - cov ntaub ntawv kub ntawm cov ntaub ntawv es tsis txhob tag nrho cov kab noj hniav kub, ua rau qhov ntsuas kub tsis sib haum ntawm tus maub los, lub zos overheating ntawm cov ntaub ntawv thiab cov khoom tiav tsis tsim nyog. Tsis tas li ntawd, ntev - lub sij hawm siab - kub ua haujlwm yam tsis muaj calibration tsis tu ncua yuav ua rau cov kev ntsuas sib txawv, ua rau qhov ntsuas kub ntawm qhov ntsuas kub qis dua lossis siab dua li tus qauv tsim.
Kev xaiv tus qauv, kev teeb tsa thiab kev saib xyuas ntawm cov thermocouple yog qhov tseem ceeb ntawm kev ua haujlwm ntev - lub sijhawm ua haujlwm ruaj khov ntawm cov tshuab cua sov. Kev ntsuas kev ua haujlwm tsis tu ncua txhua peb mus rau rau lub hlis tuaj yeem tshem tawm qhov sib txawv ntawm qhov kub thiab txias los ntawm alloy hlau aging thiab cov qauv kev hloov pauv. Lub hom phiaj cov khoom sib txuam yog xav tau rau kev ua hauj lwm tshwj xeeb: titanium alloy sheaths rau acidic thiab alkaline corrosive ib puag ncig, nqus brazing sealing qauv rau aerospace lub tshuab nqus tsev cua sov, thiab poob siab-absorbing fixed accessories rau siab -vibration ntau lawm kab. Customized thermocouple solutions matching heating tube layout and equipment internal structure can perfectly know close-loop precise temperature control, txo lub zog pov tseg thiab tsis ua hauj lwm tus nqi, thiab muab kev ruaj ntseg kev txhawb nqa rau standardized industrial thermal processing thiab siab -precision thermal khoom lag luam.
