Cov thermocouples raug kaw thiab qis-tus nqi tsis tau kaw cov hlau tsis muaj hlau thermocouples tsim ob yam khoom lag luam tseem ceeb hauv kev lag luam kub khiav, nrog qhov sib txawv loj hauv lub neej kev pab cuam, cov xwm txheej siv tau thiab ntev- tus nqi siv, uas cuam tshuam ncaj qha rau kev txiav txim siab ntawm kev txhaj tshuaj molding factories. Unsealed thermocouples tsuas yog qhwv ib txheej nyias ntawm rwb thaiv tsev sab nraum J / K hlau hlau tsis muaj hlau sheath thiab sab hauv magnesium oxide filling, feem ntau yog siv rau pwm mus sim ib ntus thiab qis- kub luv- lub voj voog ntim pwm hauv qab 260℃. Raws li kev ua haujlwm tas mus li 8-teev ib zaug- hloov ntau lawm, lawv lub neej kev pabcuam nruab nrab tsuas yog 30–60 hnub xwb. High-kub hluav taws xob hluav taws xob los ntawm cov cua kub khiav ceev ceev cov txheej txheem rwb thaiv tsev, ua rau cov xaim luv luv; yas volatile gas ncaj qha mus rau qhov raug sensing hlws ris, accelerating oxidation thiab teeb liab drift nyob rau hauv ib lub hlis. Thaum lub rooj cob qhia kub siab tshaj 300 degree, unsealed probes yuav ua tsis tiav nyob rau hauv tsawg tshaj li ob lub lis piam, ua rau nquag TC OPEN thiab TC SHORT tswb.
Tag nrho cov armored thermocouples txais yuav seamless stainless hlau los yog Inconel alloy sab nrauv sheath, muaj siab - purity magnesium oxide rwb thaiv tsev hmoov sab hauv kom cais cov thermos nyob ntawm sab nraud kub, corrosive gas thiab txhua yam kev sib txhuam. Raws li tus qauv 24-teev kev tsim khoom tas mus li, cov khoom siv hlau tsis zoo zoo tib yam kaw tau tuaj yeem ua haujlwm ruaj khov rau 8-12 lub hlis, thaum siab-kawg Inconel kaw cov thermocouples siv rau siab-kub engineering yas molding tuaj yeem ncav cuag lub neej kev pabcuam ntawm 18-24 lub hlis, 6-10 npaug ntev dua li cov khoom tsis tau ntim. Lub hauv paus magnesium oxide sau tag nrho thaiv cov corrosive vapor los ntawm PVC, nplaim-retardant PA thiab cov khoom siv rov ua dua tshiab, zam kev sib tshuam oxidation thiab teeb liab drift. Cov hlau sheath kuj tiv thaiv khawb thiab puas los ntawm iav fiber ntau yaj thiab pwm hlau burrs, zoo heev txo cov neeg kho tshuab puas.
Qhov kev pab cuam lub neej sib txawv yog ntxiv amplified nyob rau hauv hnyav ntau lawm puag ncig. Nyob rau hauv siab -cov chaw ua haujlwm ntawm ntug dej hiav txwv, cov xov hlau tsis sib txuas tsis muaj qhov nqus dej sai sai, ua rau hluav taws xob xau thiab ceeb toom tsis sib xws hauv 20 hnub; sealed armored sheaths tsim ua tiav cov dej tsis sib haum, zoo cais dej vapor thiab condensate. Rau kev kho mob pwm pwm uas xav tau cov qauv kev huv huv nruj, cov thermocouples uas tsis tau kaw tau nthuav tawm cov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob
Ntau lub chaw tsim khoom xaiv cov thermocouples uas tsis tau kaw kom txuag tau cov nqi muag khoom ua ntej, tab sis tsis quav ntsej txog qhov kev poob qis uas tau coj los ntawm lub neej luv luv. Unsealed probes yuav tsum tau hloov ntau zaus, yuav tsum tau rov ua pwm txias, disassembly thiab xaim, siv sij hawm ntau lub sij hawm ua hauj lwm thiab ua rau cov khoom tsis tau npaj tseg. Kev kub ntxhov tsis tu ncua kuj tseem ua rau cov khoom siv yas tsis zoo, thiab cov khoom seem poob hauv ib nrab xyoo yog siab dua tus nqi sib txawv ntawm cov khoom kaw thiab tsis tau kaw. Tsis tas li ntawd, kev tawm tswv yim kub tsis ruaj khov ua rau lub tshuab hluav taws xob kub hnyiab thiab kev puas tsuaj ntawm thermal qaug zog, ua rau cov pwm siv nyiaj ntau ntxiv.
Daim ntawv thov kev faib cov kev cai xaiv kom meej meej cov ntsiab lus sib xws: cov thermocouples uas tsis tau kaw tsuas yog tsim rau luv luv -lub sij hawm kuaj pwm, qis- qhov kub tsis sib haum me me- batch tsim cov khoom ntim PP / PE; tag nrho cov pwm ntau lawm, siab -kub engineering yas pwm, kev kho mob thiab tsheb precision pwm yuav tsum tau txais tag nrho cov khoom siv armored thermocouples. Txawm hais tias ib qho - sij hawm yuav tus nqi nce 50% -100%, qhov kev pab cuam ncua sij hawm txiav kev hloov zaus thiab poob qis, txo cov nqi siv txhua xyoo ntau dua 60%. Kev tu cov ntaub thaiv npog tsis tu ncua thiab kev hloov pauv raws sijhawm ntawm cov laus txuas ntxiv tuaj yeem txuas ntxiv lub neej kev pabcuam ntawm cov thermocouples kaw ze li ntawm 30%.
