Qhov cuam tshuam ntawm Wire Gauge (AWG) ntawm Thermocouple Performance thiab Durability

Ntau qhov kev lag luam tau ntsib teeb meem tsis txaus ntseeg nrog kev ntsuas qhov kub thiab txias -thermocouples xa cov ntawv nyeem tsis raug, ua tsis tiav, lossis tawm tsam kom tiv thaiv kev ua haujlwm hnyav. Dab tsi feem ntau tsis pom zoo hauv cov xwm txheej no yog lub luag haujlwm ntawm lub ntsuas hluav taws xob (AWG), zoo li cov ntsiab lus me me uas ua rau muaj kev cuam tshuam tseem ceeb ntawm kev ua haujlwm thiab kev pabcuam lub neej ntawm thermocouples. Kev nkag siab txog yuav ua li cas lub ntsuas hluav taws xob cuam tshuam nrog cov thermocouple kev ua haujlwm tuaj yeem pab kom tsis txhob raug nqi qis thiab ua kom ntseeg tau qhov ntsuas kub zoo.

Ua ntej, nws yog ib qho tseem ceeb kom paub meej tias AWG entails dab tsi. AWG, los yog American Wire Gauge, yog ib qho qauv siv los qhia txog lub cheeb ntawm cov xov hluav taws xob. Raws li AWG tus lej nce, txoj kab uas hla ntawm cov hlau yuav txo qis -piv txwv li, 14 AWG hlau yog tuab dua 20 AWG hlau. Thermocouples cia siab rau cov nyhuv Seebeck, qhov twg ob lub xov hlau sib txawv tau koom nrog ntawm ib qho kawg (kev ntsuas kev sib tshuam) tsim kom muaj qhov sib npaug ntawm qhov kub thiab txias ntawm qhov sib txuas thiab lwm qhov kawg (qhov kev sib tshuam siv). Lub ntsuas hluav taws xob cuam tshuam ncaj qha cuam tshuam qhov hluav taws xob no kis tau zoo npaum li cas thiab yuav ua li cas cov thermocouple tiv thaiv ib puag ncig kev ntxhov siab.

Raws li kev paub dhau los, lub ntsuas hluav taws xob muaj qhov sib txuas ncaj qha nrog qhov tseeb ntawm thermocouple thiab lub sijhawm teb. Thicker xov hlau (cov lej AWG qis dua) muaj qhov hluav taws xob qis dua, uas txo qis qhov hluav taws xob poob rau qhov ntev. Qhov no yog qhov tseem ceeb heev rau cov ntawv thov uas cov thermocouples tau teeb tsa deb ntawm cov ntsuas ntsuas, vim tias qhov kev tiv thaiv ntau dhau tuaj yeem cuam tshuam cov teeb liab voltage thiab ua rau qhov ntsuas kub tsis raug. Cov xov hlau nyias nyias (siab dua AWG tus lej), los ntawm qhov sib txawv, muaj kev tiv thaiv ntau dua tab sis muab sijhawm teb sai dua. Qhov no yog vim hais tias cov xov hlau nyias nyias muaj tsawg dua thermal huab cua, tso cai rau lawv kom sov los yog txias dua sai dua thiab hnov ​​​​mob sai dua rau kev hloov pauv kub. Txawm li cas los xij, qhov kev nrawm no los ntawm tus nqi ntawm cov teeb liab ruaj khov dhau mus ntev.

Thaum nws los txog rau durability, hlau gauge plays lub luag hauj lwm tseem ceeb tshaj. Thicker thermocouple xov hlau khav theeb lub zog siv tshuab ntau dua, ua rau lawv tiv taus ntau dua rau lub cev puas tsuaj xws li khoov, kev co, thiab puas tsuaj -cov teeb meem tshwm sim hauv kev lag luam xws li cov chaw tsim khoom lossis cov chaw tsim hluav taws xob. Lawv kuj muaj tus ntoo khaub lig loj dua - ntu ntu, uas txhim kho cov cua sov thiab txo qhov kev pheej hmoo ntawm overheating thaum raug kub siab rau lub sijhawm ntev. Nyob rau hauv siab - qhov kub thiab txias los yog corrosive ib puag ncig, cov xov hlau tuab kuj tuaj yeem ua kom haum cov ntaub ntawv rwb thaiv tsev zoo dua, txuas ntxiv kev pab cuam lub neej.

Hauv kev muaj tiag, tsis muaj ib tug -size- haum-tag nrho AWG rau thermocouples. Qhov kev xaiv yog nyob ntawm qhov kev thov tshwj xeeb. Piv txwv li, nyob rau hauv hnyav-cov ntawv thov kev lag luam nrog cov xaim ntev ntev, kub siab, thiab kev co nquag, qis AWG xov hlau (14-}18 AWG) yog qhov nyiam rau lawv qhov ruaj khov thiab kav ntev. Rau cov chaw kuaj mob lossis cov ntawv thov uas xav tau cov lus teb ceev ceev- xws li kev ua zaub mov lossis cov khoom siv kho mob-siab dua AWG xov hlau (20-24 AWG) yog qhov tsim nyog, yog tias cov xaim khiav yog luv kom tsis txhob poob teeb liab.

Qee qhov teeb meem tshwm sim kom tsis txhob suav nrog kev saib xyuas tus nqi tseem ceeb tshaj qhov tsim nyog. Cov xov hlau nyias nyias feem ntau pheej yig dua, tab sis siv lawv nyob rau hauv siab - ib puag ncig kev ntxhov siab yuav ua rau muaj kev hloov ntau zaus thiab nce nqi tag nrho. Lwm qhov yuam kev yog tsis quav ntsej lub ntsuas hluav taws xob thaum txuas cov hluav taws xob thermocouple uas twb muaj lawm - sib xyaw cov ntsuas ntsuas sib txawv tuaj yeem ua rau tsis sib haum thiab cuam tshuam qhov tseeb. Nws tseem ceeb heev kom phim lub ntsuas hluav taws xob nrog hom thermocouple (piv txwv li, K- hom, J- hom), vim tias cov hlau sib txawv muaj qhov sib txawv ntawm cov conductivity thiab kub txwv uas cuam tshuam nrog txoj kab uas hla.

Txhawm rau ua kom tiav, xaiv qhov tseeb AWG yog kauj ruam tseem ceeb hauv kev ua kom zoo dua cov thermocouple kev ua tau zoo thiab kav ntev. Nws yuav tsum muaj qhov ntsuas qhov sib npaug xws li lub sijhawm teb, qhov tseeb ntawm lub teeb liab, kev ntxhov siab ntawm kev siv tshuab, thiab kev ua haujlwm kub. Txhua daim ntawv thov muaj qhov xav tau tshwj xeeb, thiab tsis muaj kev daws teeb meem thoob ntiaj teb. Kev soj ntsuam kev ua haujlwm ntawm kev ua haujlwm, xaim ntev ntev, thiab cov hom phiaj kev ua haujlwm yog qhov tseem ceeb los txiav txim siab qhov zoo tshaj plaws xov hlau ntsuas thiab kev teeb tsa thermocouple. Qhov kev hloov kho qib no ua kom ntseeg tau tias cov thermocouples xa cov khoom siv tau ruaj khov, ntev - kev pabcuam kav ntev, txhawb nqa kev ua haujlwm tsis sib haum thoob plaws ntau yam kev lag luam.