Yuav Ua Li Cas Sib Piv Thermocouple Performance los ntawm Cov Chaw Tsim Khoom?

Sib piv cov thermocouple kev ua tau zoo los ntawm cov tuam txhab sib txawv yuav tsum muaj kev tsim qauv, kev tshawb fawb los xyuas kom meej tias cov sensor xaiv tau raws li cov kev xav tau tshwj xeeb ntawm daim ntawv thov. Thawj kauj ruam yog los txheeb xyuas cov kev ua haujlwm tseem ceeb. Rau cov kub khiav thermocouples, cov no feem ntau suav nrog: qhov tseeb kam rau ua (Class 1 lossis Class 2), drift rate (piv txwv li,℃ib 1000 teev ntawm kev ua haujlwm kub), lub sij hawm teb (lub sij hawm mus rau 90% ntawm ib kauj ruam hloov), rwb thaiv tsev tsis kam (ntawm chav tsev thiab kev khiav hauj lwm kub), qhov ntsuas kub siab tshaj plaws, thiab cov neeg kho tshuab robustness (khoov vojvoog, crush resistance). Cov kauj ruam thib ob yog thov kom cov ntaub ntawv qhia ntxaws ntxaws los ntawm txhua lub chaw tsim khoom. The datasheet should include the chemical composition of the thermocouple alloy, the sheath material, the insulation density, and the test methods used for quality control. Qhov thib peb kauj ruam yog ua qhov kev xeem "sab-los ntawm-sab". Nruab cov thermocouples los ntawm cov chaw tsim khoom sib txawv hauv thaj chaw uas nyob ib sab ntawm tib lub kub khiav (kom ntseeg tau tias cov cheeb tsam zoo ib yam hauv kev tsim). Khiav lawv nyob rau hauv tib lub sijhawm rau ib lub sijhawm (piv txwv li, 1,000 teev). Sau qhov ntsuas kub, qhov feem pua ​​ntawm lub zog, thiab txhua lub tswb. Qhov no muab kev sib piv ncaj qha ntawm kev ua haujlwm. Kauj ruam plaub yog ua qhov kev ntsuam xyuas kev laus sai. Yog tias lub sijhawm txwv, khiav cov thermocouples ntawm qhov kub siab tshaj li qub (piv txwv li, 400℃tsis yog 300 degree) rau lub sijhawm luv dua (piv txwv li, 100 teev). Qhov no ua kom nrawm nrawm, tso cai rau kev sib piv ntawm qhov ntev - lub sijhawm ruaj khov. Qhov thib tsib kauj ruam yog los ntsuam xyuas daim ntawv pov thawj calibration. Daim ntawv pov thawj yuav tsum suav nrog qhov sib txawv ntawm ob peb lub ntsiab lus, tsis yog "pass" lossis "ua tsis tiav." Sib piv qhov sib txawv ntawm koj qhov kev ua haujlwm kub. Ib qho kev sib txawv me me qhia qhov tseeb zoo dua. Kauj ruam thib rau yog los ntsuas qhov zoo ntawm cov tshuab. Tshawb xyuas qhov kev sojntsuam tiav (kev du, tsis muaj khawb), qhov sib txuas zoo (tus pin plating, lub caij nplooj ntoos hlav nro), thiab qhov yooj yim ntawm cable. Ib qho pom tau zoo- cov khoom tsim feem ntau yog qhov cim zoo. Qhov thib xya theem yog xav txog tus nqi. Sib piv cov nqi tsev, tab sis kuj suav tag nrho cov nqi ntawm cov tswv cuab (TCO) siv koj qhov kev xav tau tsis ua haujlwm thiab cov nqi poob qis. Ib me ntsis kim dua thermocouple uas kav ntev li ob zaug yog feem ntau pheej yig dua nyob rau lub sijhawm ntev. Qhov thib yim kauj ruam yog los ntsuam xyuas tus neeg muag khoom kev txhawb nqa. Lawv puas tuaj yeem pab nrog teeb meem kev teeb tsa? Lawv puas muab cov kev pabcuam calibration? Ib tus neeg xa khoom nrog kev txhawb nqa muaj zog tuaj yeem txuag sijhawm thiab nyiaj txiag. Kauj ruam cuaj yog los xyuas cov ntaub ntawv. Hu rau lwm cov nroj tsuag uas siv cov chaw tsim khoom cov thermocouples thiab nug txog lawv cov kev paub dhau los. Los ntawm kev ua raws li cov txheej txheem sib piv no, cov kws tsim qauv tuaj yeem xaiv cov thermocouple uas muaj qhov sib npaug zoo tshaj plaws ntawm kev ua tau zoo, kev ntseeg siab, thiab tus nqi rau lawv daim ntawv thov tshwj xeeb. Cov ntaub ntawv no-tsav mus kom ze txo qhov kev pheej hmoo ntawm kev xaiv cov khoom raws li tus nqi lossis lub koob npe nrov, ua kom muaj txiaj ntsig zoo rau cov nroj tsuag.