Ntau lub tuam txhab pwm yuav disassembled thib ob- tes thermocouples los ntawm cov pwm rov ua lag luam los txiav cov nqi seem, tsis quav ntsej txog kev puas tsuaj rau hauv cov khoom siv uas tsis tuaj yeem txheeb xyuas los ntawm kev tshuaj xyuas yooj yim. Rov qab siv dua thib ob- tes thermocouples coj qhov kev hloov pauv tsis tu ncua, tsis tu ncua lub sijhawm tsis tau npaj tseg thiab txawm tias cov khoom siv khiav kub kub puas tsuaj, uas nws qhov kev poob qis tshaj qhov me me ntawm tus nqi yuav khoom. Kab lus no txheeb tawm ntau qhov kev pheej hmoo zais ntawm cov thermocouples rov qab siv dua thiab cov qauv tshuaj ntsuam xyuas yog tias thib ob - tes sensors yuav tsum tau txais ib ntus.
Irreversible alloy hlau aging thiab cumulative kub drift yog qhov tseem ceeb tshaj plaws zais kev phom sij. Tom qab ntev -lub sij hawm siab- kub ua haujlwm ntawm cov pwm qub, cov xov hlau sab hauv ntawm ob- tes thermocouples tau dhau los ua cov hlau siv lead ua kev hloov pauv thiab oxidation, tsim kom muaj qhov sib txawv ntawm qhov sib txawv uas tsis tuaj yeem raug tshem tawm los ntawm kev ntxuav thiab kev tswj xyuas offset calibration. Txawm hais tias qhov zoo li tsis muaj kev puas tsuaj, qhov ntsuas kub tsis zoo feem ntau tshaj ± 2℃tom qab kev teeb tsa ntawm cov neeg ua haujlwm kub tshiab, ua rau cov yas scorching, cov khoom txias thiab cov khoom tsis sib xws hauv cov khoom loj. High-kub N- hom thermocouples siv rau PPS thiab LCP molding muaj qhov hnyav dua qub; lawv cov kev tiv thaiv -drift kev ua tau zoo poob qis tom qab 6 lub hlis ntawm kev pabcuam, thiab thib ob-cov khoom siv tes ua haujlwm poob qhov muaj peev xwm sib piv rau siab -kub engineering yas pwm.
Hidden sheath micro-corrosion perforations induce sudden short-circuit thiab open-circuit faults. Feem ntau thib ob- tes thermocouples yog disassembled los ntawm cov pwm ua cov nplaim hluav taws- rov qab, rov ua dua lossis halogen- muaj cov yas corrosive. Acid-cov pa roj av tsis muaj zog ua rau pom tsis pom micro-pitting qhov ntawm lub plhaub uas tsis tuaj yeem pom los ntawm qhov muag liab qab. Tom qab reinstallation thiab reheating, rhiav ya raws thiab yas vapor nkag mus rau hauv lub sheath los ntawm cov me me qhov, tawg nyob rau hauv lub magnesium oxide rwb thaiv tsev hmoov nyob rau hauv 1-2 lub lis piam thiab ua rau random luv luv- lub tswb tswb. Qhov luv luv- Circuit Court txhaum ua rau lub cua sov coil tso tawm tag nrho lub zog tsis tu ncua, ua rau cov khoom nozzle to thiab manifold hauv zos overheating carbonization, uas yuav hlawv tawm kim cua sov coils thiab puas kub khiav hlau substrates.
Kev puas tsuaj ntawm cov qauv sab hauv tsis tuaj yeem rov qab los ntawm kev saib xyuas. Lub compression springs thib ob- txhais tes tiaj- lub taub hau thiab khawm thermocouples poob elastic quab yuam tom qab ntau txhiab lub sij hawm ntawm thermal expansion thiab contraction, tsis tuaj yeem tuav nruj ntawm kev hnov lub taub hau thiab kub khiav, ua rau tsis ruaj khov dhia kub nyeem ntawv. Cov hlau hluav taws xob sealing kua nplaum muaj hnub nyoog thiab cov kab nrib pleb, poob noo noo thiab corrosion kuj muaj nuj nqi; cov armored dabtsi yog khoov seem generates internal alloy hlau qaug zog fractures tsis pom sab nraud, uas tawg kiag li tom qab kaum ob ntawm pwm qhib mus. Terminal plug pins tau sau tuab oxide xeb los ntawm ntev - lub sij hawm ntsaws thiab tshem tawm, ua rau muaj kev tiv thaiv kev tiv thaiv thiab ua kom lub teeb liab ua kom nrawm. Tag nrho cov kev puas tsuaj sab hauv no tsis tuaj yeem kho los ntawm kev tu lossis lubrication, tsuas yog hloov tag nrho tuaj yeem daws qhov teeb meem.
Kev sib xyaw ua haujlwm tsis paub keeb kwm ua rau cov khoom tsis sib haum xeeb. Thawj daim ntawv thov pwm thiab ua cov khoom siv yas ntawm cov khoom siv rov ua dua thib ob - tes thermocouples feem ntau tsis tuaj yeem tshawb pom. Lub sensor qub siv rau corrosive PVC molding tuaj yeem rov qab siv rau ntawm kev kho mob pob tshab PC kub khiav; residual corrosive cov ntsiab lus nyob rau hauv lub sheath yuav tsis tu ncua volatilize thiab pollute kev kho mob-qib yaj, ua rau cov khoom biocompatibility txaus ntshai thiab batch rejection neeg thov. Thib ob- tes thermocouples uas tsis paub hom xaim tuaj yeem sib xyaw K-hom thiab N- hom hlau hlau, ua rau kev nyeem ntawv kub kub offset tom qab txuas mus rau cov tswj tsis sib xws.
Yog tias cov tuam txhab lag luam yuav tsum siv ob- tes thermocouples rau ib ntus qis - ntim cov pwm sim vim tsis muaj nqi, ua tiav ntau- kauj ruam tshuaj ntsuam yuav tsum tau ua. Ua ntej, ua qhov kev tshuaj ntsuam xyuas kom tshem tawm cov khoom nrog tawg lub tes tsho sab nrauv, rusted plugs thiab pitted sheaths. Thib ob, ua multimeter tsis kam thiab rwb thaiv tsev ntsuas los tshuaj xyuas cov sensors nrog lub voj tsis zoo. Thib peb, ua peb- taw tes siab- ntsuas kub nrog lub qhov cub qhuav qhuav, tsis lees txais cov thermocouples nrog kev sib txawv ntawm qhov sib txawv tshaj ± 1.2℃. Plaub, txwv tsis pub dhau ob lub lis piam ua haujlwm thiab txwv tsis pub siv cov khoom siv tsheb, kev kho mob thiab hluav taws xob precision pwm.
Los ntawm qhov ntev - lub sij hawm tsim cov nqi tsim khoom, hom- tshiab calibrated thermocouples nrog kom meej zoo traceability zam loj heev cov khoom puas thiab cov khoom siv tu cov nuj nqis tshwm sim los ntawm qhov thib ob - tes sensor zais faults, uas yog tus nqi ntau dua - cov khoom lag luam ruaj khov.
