Dab tsi yog qhov txawv ntawm N-hom thiab T-hom thermocouples

Qhov sib txawv tseem ceeb ntawm N-hom thiab T- hom thermocouples nyob rau hauv lawv cov khoom muaj pes tsawg leeg, ntsuas qhov kub thiab txias, cov yam ntxwv raug, kev hloov pauv ib puag ncig, thiab cov xwm txheej siv tau. Lawv sawv cev rau ob txoj hauv kev hauv kev ntsuas kub tam sim no: "siab-stability nruab nrab- kub hom" thiab "siab-precision low-temperature type," feem. N-hom thermocouples ho txhim kho siab -kub oxidation tsis kam thiab ntev{10}}lub sij hawm ruaj khov los ntawm optimized alloy muaj pes tsawg leeg, ua rau lawv haum rau kev kub siab mus tas li - ntsuas kub ntawm 400 txog 1300℃. T- hom thermocouples, ntawm qhov tod tes, muaj npe nrov rau lawv cov kev ruaj ntseg zoo thiab qhov tseeb siab nyob rau hauv qhov qis- qhov kub thiab txias thiab tau siv dav hauv kev tshawb fawb, tub yees, thiab kev siv kho mob uas yuav tsum tau ntsuas qhov ntsuas kub siab heev, nyob rau thaj tsam ntawm -200 txog 350 degree.

I. Cov khoom xyaw: Nickel-Chromium-Silicon-Nickel-Silicon-Magnesium vs. Copper-Constantan

N-hom thermocouple (Nickel-Chromium-Silicon-Nickel-Silicon-}Magnesium): Cov electrode zoo yog npib tsib xee-chromium-silicon alloy (NP{2}), thiab cov electrode tsis zoo yog ib qho nickel- nickel. Nws belongs rau lub hauv paus hlau thermocouple qeb.

Los ntawm kev nce Cr thiab Si cov ntsiab lus thiab qhia txog Mg, cov teeb meem ntawm luv luv -ntau cov lattice xaj thiab nyiam oxidation ntawm qhov kub thiab txias tau zoo suppressed, txhim kho microstructural stability ntawm cov khoom.

T-hom thermocouple (tooj liab-constantan): Qhov zoo electrode yog tooj liab ntshiab (TP), thiab qhov tsis zoo electrode yog tooj liab-nickel alloy (TN, tseem hu ua constantan). Nws yog qhov feem ntau homogeneous thiab tshuaj ruaj khov ntawm tag nrho cov txheej txheem thermocouples.

Vim hais tias tooj liab thiab constantan muaj cov yam ntxwv muaj peev xwm linear ntawm qhov kub thiab txias, lawv yog qhov tshwj xeeb tshaj yog haum rau kev ntsuas qhov ntsuas kub tsawg -.

Xaus: N-hom thermocouples yog tsim rau kev ua haujlwm ntev- ntawm qhov kub thiab txias; T- hom thermocouples muaj qhov tsis zoo ntawm qhov tseeb ntawm qhov kub qis.

II. Kev sib piv Kub Kub: Hom N npog qhov kub thiab txias, Hom T tsom rau qhov kub thiab txias

Rooj: Hom	Ntev -Lub sijhawm ua haujlwm kub	Luv -Lub sij hawm tiv taus kub	Kev ntsuas qhov ua tau zoo
Hom N	1200 degree	1300 degree	-200 ~ 1300 degree
Hom T	300 degree	350 degree	-200 ~ 350 degree

Hom N thermocouples tuaj yeem ua haujlwm ruaj khov rau lub sijhawm txuas ntxiv hauv qab 1300 degree. Nyob rau hauv 400 ~ 1300℃ntau yam, lawv cov yam ntxwv thermoelectric yog linearly superior rau hom K, ua rau lawv zoo tagnrho rau siab - kub muaj furnaces thiab cov khoom siv kho cua sov.

Hom T thermocouples muaj qhov ntsuas kub qis dua; saum toj 350 degree, tooj liab cathode yog nquag oxidation thiab tawg. Txawm li cas los xij, lawv muaj kev ruaj ntseg zoo nyob rau hauv -200 ~ 0℃ntau yam thiab feem ntau siv los ua tus qauv ntsuas kub qis.

Lus Cim: Hom T thermocouples tsis tuaj yeem siv nyob rau hauv siab -kub oxidizing ib puag ncig; Hom N thermocouples tsis pom zoo siv rau hauv qhov tsis muaj zog oxidizing, txo, lossis sulfur -muaj cov huab cua.

 

III. Qhov tseeb thiab teeb liab tso tawm yam ntxwv

N-hom thermocouple: Thermoelectric muaj peev xwm yog kwv yees li 39 μV / degree, nrog rau nruab nrab rhiab heev. Txawm li cas los xij, nws nthuav tawm me me thermoelectric tej zaum drift thiab zoo rov ua tau zoo ntawm qhov kub thiab txias, thiab nws cov kev ruaj ntseg txhua xyoo yog qhov zoo tshaj ntawm K- hom, ua rau nws haum rau ntev - cov ntaub ntawv tau txais.

Nws cov linearity zoo dua li K- hom nyob rau hauv 400 ~ 1300℃ntau yam, txo qhov kev xav tau ntawm nonlinear them nyiaj.

T-hom thermocouple: Thermoelectric peev xwm yog kwv yees li 43 μV / degree. Nws boasts qhov tseeb tshaj plaws thiab zoo tshaj plaws uniformity ntawm lub hauv paus hlau thermocouples, tshwj xeeb tshaj yog nrog ib tug linear sib txawv ntawm tsawg tshaj li 0.5% nyob rau hauv lub -200 ~ 0℃ntau yam.

Vim nws qhov rov ua tau zoo dua thiab tsis tshua muaj suab nrov, nws feem ntau siv hauv chav kuaj- cov qauv ntsuas kub thiab cov khoom siv ntsuas ntsuas theem nrab.

Piv txwv piv txwv: Ntawm 0℃, T- hom tso zis yog 0mV, thiab cov teeb liab tseem nyob ruaj khov thoob plaws qhov qis - qhov kub thiab txias; thaum N- hom nthuav tawm qhov tsis zoo ntawm cov kab hluav taws xob loj dua ntawm qhov kub thiab txias, ua rau nws tsis tsim nyog rau kev kuaj xyuas qhov sib txawv me me.

 

IV. Environmental Adaptability thiab kev txwv kev siv

Rooj Environmental Type	N-type Performance	T-type Performance
Oxidizing Atmosphere	Zoo heev, muaj zog oxidation tsis kam qis dua 1200 degree	Tooj liab cathode yog yooj yim oxidized saum 350 degree, tiv thaiv tube yuav tsum
Txo Huab Cua	Tsis siv tau	Siv tau, tiv taus H₂ thiab CO gas corrosion
Inert/Vacuum Ib puag ncig	Tsis pom zoo	Siv tau, ruaj khov kev ua haujlwm
Humidity Ib puag ncig	Tsis muaj qhov tshwj xeeb zoo	Tsis rhiab rau cov av noo, haum rau cov tub yees tshuab
Ntev - Lub Sij Hawm Stability	Zoo heev, muaj zog tiv thaiv hluav taws xob neutron	Zoo heev ntawm qhov kub thiab txias, yooj yim degraded ntawm qhov kub thiab txias

Kev pom zoo: N- hom yog haum rau siab- qhov kub thiab txias, cov khoom siv hluav taws xob nuclear, thiab lwm yam xwm txheej uas yuav tsum tau ua kom ntev - lub sij hawm ruaj khov; T- hom yog tsim rau cov chaw muag tshuaj txias, khoom noj khoom haus khov, qis- qhov kev sim ntsuas kub, thiab lwm yam kev lag luam uas yuav tsum muaj siab.

V. Kev sib piv ntawm Cov Ntawv Thov Kev Sib Tham

N-hom thermocouples: Dav siv nyob rau hauv siab- qhov kub thiab txias muaj qhov cub, cov khoom siv kho cua sov, kev saib xyuas lub tshuab aerospace, kev ntsuas kub ntawm lub tshuab hluav taws xob nuclear, thiab lwm yam kev siv uas yuav tsum tau muaj kev ruaj ntseg ntev -.

Vim lawv qhov kev ua tau zoo tshaj plaws piv rau hom K, lawv tau maj mam hloov hom K raws li cov tiam tshiab ntawm nruab nrab - thiab siab - ntsuas qhov ntsuas kub.

T-hom thermocouples: Feem ntau siv rau hauv cov tshuaj txias chains, biological incubators, cryogenic thwmsim, ua zaub mov kab, kuaj ntsuas kub, thiab lwm yam teb uas yuav tsum tau siab -precision low{2}}kub tswj.

Vim lawv txoj kev ruaj ntseg zoo, lawv kuj tau siv los ua calibration siv thermocouples rau cov twj paj nruag.