Temperature Resistance Standards: Yog vim li cas Internal Lead Heaters Yuav tsum tau 550℃+ High -Tsuas Lead Wires
Cov cua kub cua kub kub thiab cov hluav taws kub rwb thaiv tsev sai yog qhov siab tshaj - pwm pwm cua sov tsis ua haujlwm, feem ntau tshwm sim hauv cov cua kub khiav, tuag- casting pwm thiab siab - cov khoom siv kub vulcanization. Ntau cov ntaub ntawv kho mob hauv cheeb tsam qhia tau hais tias lub cev kub hauv lub cev tseem nyob tsis zoo thaum cov hlau lead ua rau muaj kev kub ntxhov thiab kev sib txuas. Feem ntau, qhov kev ua tsis tiav no tshwm sim los ntawm cov hlau lead hlau kub tsis sib xws es tsis yog qhov tsis zoo ntawm lub tshuab cua sov. Raws li qhov siab -kub cua sov daim ntawv thov kev paub, cov hlau lead hauv sab hauv thiab sab nraud cov hlau lead cartridge rhaub tau txais cov qauv kev xaiv cov hlau lead sib txawv kiag li, thiab kev ua raws li qhov ntsuas kub tsis kam ua raws li lub hauv paus tseem ceeb rau ntev - lub sij hawm ruaj khov kev koom tes nrog thermocouple precision kub tswj tshuab.
Cov khoom siv hluav taws xob sab nraud muaj cov txheej txheem sib txuas sib cais uas cais cov hlau lead ntawm qhov siab - qhov kub thiab txias zones. Sab nraud crimped terminals thiab lub tes tsho fiberglass tsim ib qho chaw tsis nyob nruab nrab ntawm siab -kub pwm qhov chaw thiab cov hlau lead sab nraud. Kev ua haujlwm kub ntawm cov hlau lead sab nraud feem ntau tswj tau qis dua 200 degree, yog li cov pa qis -kub cov hlau lead ua tau raws li qhov xav tau ntawm kev ua haujlwm txhua hnub yam tsis muaj kev pheej hmoo scorching. Qhov qis- kub ua hauj lwm yam ntxwv no yooj yim xaiv cov khoom thiab txo tag nrho cov khoom configuration nqi rau qis thiab nruab nrab-kub pwm cua sov scenarios.
Internal lead cartridge heaters muaj qhov sib txawv ntawm qhov kub thiab txias ua haujlwm. Tag nrho cov ntsiab lus sib txuas ntawm cov xaim tau muab ntim rau hauv lub tshuab cua sov, txuas ncaj qha mus rau qhov siab - cov khoom cua kub cua sov thiab magnesium oxide rwb thaiv tsev txheej. Thaum lub sij hawm tas mus li pwm cua sov ua haujlwm, cov cheeb tsam kev sib txuas sab hauv txhawb nqa ntev - lub sij hawm ultra- kub kub hluav taws xob thiab hluav taws xob conduction. Tsis muaj qhov kub thiab txias ua haujlwm tau zoo, cov hlau lead hlau rwb thaiv tsev cov khaubncaws sab nraud povtseg sai sai, carbonize thiab tawg, ua rau luv luv Circuit Court thiab hlau burnout. Cov txheej txheem kev lag luam qhia meej meej qhia tias cov khoom siv hluav taws xob sab hauv uas txhawb nqa cov xov hlau yuav tsum muaj kev ruaj ntseg ntawm qhov kub siab tshaj 550 degree.
Cov qhab-nees tsis sib xws ntawm cov hlau lead ncaj qha cuam tshuam qhov ntsuas kub ntawm thermocouple tswj qhov tseeb. Cov zis hluav taws xob txawv txav tshwm sim los ntawm cov xaim laus thiab kev sib cuag tsis zoo ua rau muaj qhov sib txawv ntawm qhov kub thiab txias, yuam cov tshuab thermocouple kom hloov lub zog ntau zaus thiab ua rau lub cev ua haujlwm hnyav. Cov lus hauv qab no qhia meej txog qhov ntsuas kub ntawm cov qauv kev teeb tsa thiab kev pheej hmoo tsis ua haujlwm ntawm ob txoj kab hluav taws xob:
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Hom kab hluav taws xob |
Standard Lead Wire Temp Resistance |
Ua hauj lwm Temp ntawm Hlau |
Common Mismatch Failures |
Thermocouple cuam tshuam |
|---|---|---|---|---|
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External Lead |
Ntau tshaj los yog sib npaug rau 200℃Pa Hlau Hlau |
Tsawg dua los yog sib npaug rau 180℃ruaj khov ua haujlwm |
Tsis tshua muaj burnout nyob rau hauv qis -temp ib puag ncig |
Negligible teeb liab fluctuation |
|
Internal Lead |
Ntau dua los yog sib npaug rau 550℃Siab -Temp Tshwj Xeeb Hlau |
300℃-520℃Ntev -Lub Sijhawm Ua Haujlwm |
Rwb thaiv tsev carbonization, hlau tawg |
Nruam kub tawm tswv yim sib txawv |
High -kub txhuas hlau sib piv tsis yog ib qho kev teeb tsa tsis tu ncua tab sis yog ib qho kev lees paub tsim nyog rau kev ua tau zoo ntawm cov hlau lead hauv. Cov khoom siv hluav taws xob sab hauv zoo txais Teflon lossis siab - kub silicone insulated xov hlau nrog 550℃-600℃kub tsis kam, tuav ruaj khov rwb thaiv tsev thiab hluav taws xob conductivity nyob rau hauv ntev -lub sij hawm siab - kub kaw ib puag ncig. Cov xov hlau tshwj xeeb no tiv thaiv kev laus ntawm thermal aging thiab carbonization, kom ntseeg tau tias cov khoom siv hluav taws xob zoo sib xws thiab cov khoom siv hluav taws xob synchronized raug lees paub ntawm kev txhawb nqa thermocouples.
Muaj ntau qhov kev nkag siab yuam kev muaj nyob hauv cov khoom siv tiag tiag. Qhov muag tsis pom kev siv cov pa 200℃xov hlau rau hauv cov khoom siv hluav taws xob sab hauv ua rau tsis ua haujlwm sai hauv ntau pua lub sijhawm ua haujlwm. Txawm hais tias muaj -cov txheej txheem thermocouple siab thiab siab- cov khoom siv hluav taws xob zoo, cov ntaub ntawv xaim tsis sib xws ua rau kev ua haujlwm tsis ruaj khov thiab cov khoom siv tsis tu ncua.
Environmental kub superposition yuav tsum tau hais txog nyob rau hauv siab -rhiav kub. Rau pwm cua sov qhov xwm txheej nrog ambient kub tshaj 250 degree, sab nraud cov hlau lead heaters kuj yuav tsum tau upgraded siab -kub xov hlau txawm hais tias lawv tsis muaj nyob rau hauv cov hlau ua hauj lwm kub. Cov cua kub ntau dhau ua rau lub tes tsho fiberglass aging thiab xaim rwb thaiv tsev tsis ua haujlwm, ua rau muaj kev phom sij rau kev nyab xeeb.
Standardized txhuas hlau configuration raws li cov qauv thaiv thiab kev khiav hauj lwm kub ua hauj lwm pab raws li lub hauv paus ntawm ruaj khov pwm cua sov tshuab. Kev cob qhia cov khoom siv ua ke nrog cov thermocouple calibration optimization ua tau zoo zam kev tswj qhov kub thiab txias thiab kev nyab xeeb uas tshwm sim los ntawm cov hlau tsis sib haum, txuas rau tag nrho - kev pabcuam lub voj voog ntawm cov khoom siv cua sov.
