Yuav Ua Li Cas Hloov Thermocouple yam tsis cuam tshuam rau kev tsim khoom?

Hloov lub thermocouple thaum lub sij hawm tsim khoom yog ib qho kev pheej hmoo siab uas, yog tias ua tsis raug, tuaj yeem ua rau ncua sij hawm poob, seem, los yog pwm puas. Ib txoj kev npaj tau zoo txo ​​qhov cuam tshuam. Thawj kauj ruam yog los npaj lub sensor hloov. Unpack lub thermocouple tshiab thiab ua ib qho kev kuaj ceev: ntsuas qhov tsis kam (yuav tsum qis, piv txwv li,<5 ohms) and insulation resistance (>100 MΩ). Xyuas kom tseeb tias cov connector hom thiab cable ntev phim tus qub. Yog hais tias tus maub los xav tau ib qho offset tshwj xeeb rau thaj tsam, nco ntsoov tus nqi offset uas twb muaj lawm. Cov kauj ruam thib ob yog teem caij hloov pauv thaum lub sijhawm teem tseg, xws li kev hloov pauv lossis hloov khoom siv, kom txo qis ntau lawm. Yog tias tsis muaj kev npaj nres, tos kom lub ntuj so, xws li lub hopper refill. Qhov thib peb kauj ruam yog txhawm rau txheeb xyuas qhov tseeb cheeb tsam thiab paub meej tias nws qhov chaw nyob ntawm cov pwm. Siv cov kab kos duab thiab ua raws li lub cev kom tsis txhob muaj kev ntxhov siab. Cov kauj ruam thib plaub yog cais thaj chaw: tua lub tshuab cua sov rau cheeb tsam uas siv tus maub los. Tsis txhob tua tag nrho cov kab ke, vim cov cheeb tsam nyob sib ze tseem yuav kub, uas yuav pab kom thaj chaw sov so. Tos kom thaj tsam kub poob qis dua 120℃-qhov no yog qhov tseem ceeb vim tias cov hlau nthuav dav thiab tuaj yeem txeeb tau lub thermocouple. Kev txias ceev heev tuaj yeem ua rau thermal shock, yog li siv tus maub los "txias" ua haujlwm yog tias muaj. Qhov thib tsib kauj ruam yog ua tib zoo tshem cov qub thermocouple. Siv tus ciaj ntswj ntawm lub hex flats (yog tias muaj), tsis yog ntawm lub cev sojntsuam, kom tsis txhob khoov. Yog tias nws daig, thov cov roj nkag mus thiab maj mam ua haujlwm nws xoob. Tsis txhob yuam nws; Yog tias tsim nyog, siv lub teeb hluav taws xob me me kom sov lub pwm thaiv me ntsis (tab sis tsis txhob overheating cov resin). Thaum tshem tawm, ntxuav lub qhov mounting kom huv si nrog ib tug xyaum me ntsis ntawm qhov loj thiab hnyav (xws li, acetone) kom tshem tawm carbonized resin thiab anti-seize residue. Kauj ruam thib rau yog siv ib qho me me ntawm qhov kub thiab txias los tiv thaiv cov xov ntawm cov thermocouple tshiab (tab sis tsis yog ntawm qhov ntxeev). Ntxig qhov kev sojntsuam tshiab, xyuas kom nws nyob hauv qab lossis ncav cuag qhov tob. Tighten nws mus rau qhov pom zoo torque (feem ntau 3-5 N·m rau M6). Txuas lub cable rau tus maub los, soj ntsuam qhov tseeb polarity. Qhov thib xya kauj ruam yog rov pib lub cheeb tsam. Ua kom qhov chaw teeb tsa rau qhov ntsuas kub (piv txwv li, 150 degree) ntawm tus nqi tswj hwm (siv txoj haujlwm ramp txog li 5℃/ min). Thaum ruaj khov, nce mus rau qhov chaw ua haujlwm tag nrho. Qhov thib yim kauj ruam yog los saib xyuas thaj chaw ua haujlwm rau thawj 10 lub voj voog. Xyuas kom qhov kub thiab txias stabilizes tsis dhau overshoot thiab tias qhov zoo ib yam. Yog tias cheeb tsam nyob rau ntawm ntau kab noj hniav, sib piv qhov hnyav ntawm cov kab noj hniav no nrog rau lwm tus kom paub tseeb txog kev ua haujlwm zoo. Los ntawm kev ua raws li cov txheej txheem no, kev hloov pauv tuaj yeem ua tiav hauv 30-60 feeb nrog kev tsim khoom tsawg thiab tsis muaj kev pheej hmoo ntawm pwm puas. Muaj cov khoom siv npaj ua ntej nrog qhov raug hloov sensor thiab cov cuab yeej npaj ua ntej yog qhov tseem ceeb rau kev ua haujlwm zoo.