Dab tsi yog qhov txawv ntawm Hom B thiab Hom E thermocouples
Tso lus
Qhov sib txawv tseem ceeb ntawm Hom B thiab Hom E thermocouples nyob rau hauv lawv cov khoom muaj pes tsawg leeg, qhov kub thiab txias, cov yam ntxwv rhiab heev, qhov chaw siv tau, thiab qhov chaw tus nqi. Lawv sawv cev rau ob txoj hauv kev sib txawv hauv kev ua haujlwm siab - ntsuas qhov kub thiab txias: "precious hlau ultra-siab kub siab hom" thiab "base hlau siab- rhiab heev hom." Hom B yog haum rau qhov kub siab tshaj - kub thiab siab - cov xwm txheej ruaj khov siab dua 1600 degree, thaum Hom E ua tau zoo nyob rau hauv siab rhiab heev thiab tus nqi zoo- ua tau zoo nyob rau hauv nruab nrab thiab qis kub ntau yam, thiab yog dav siv nyob rau hauv kev lag luam txheej txheem tswj thiab kuaj ntsuas.
I. Cov Khoom Siv Khoom Siv: Cov Hlau Hlau Ob Chav Platinum-Rhodium vs Base Hlau Nickel-Chromium-Copper-Nickel
Hom B thermocouples (Platinum-Rhodium 30-Platinum-}Rhodium 6): Cov electrode zoo yog platinum-rhodium alloy uas muaj 30% rhodium (BP), thiab cov electrode tsis zoo yog platinum-rhodium alloy uas muaj npe hu ua "6% rhodoub", platinum-rhodium thermocouple.
Nyob rau hauv qeb ntawm cov khoom muaj txiaj ntsig zoo thermocouples, vim yog siv cov hlau tsis tshua muaj platinum thiab rhodium, lawv kim heev thiab xav tau kev nqis peev loj.
Hom E thermocouple (Ni-Chromium/Copper-Nickel): Qhov zoo electrode yog npib tsib xee-chromium alloy (EP), thiab qhov tsis zoo electrode yog tooj liab-nickel alloy (constantan, EN). Nws belongs rau lub hauv paus hlau thermocouple qeb.
Nws muaj cov khoom siv qis thiab pheej yig, ua rau nws yog ib qho ntawm cov nqi ntau tshaj -cov khoom siv ntsuas kub zoo hauv kev lag luam.
Xaus: Hom B yog haum rau siab - peev nyiaj, siab -requirement ultra- kub precision ntsuas; Hom E yog qhov tsim nyog rau batch ntau lawm thiab tus nqi -sensitive industrial applications.
II. Qhov kub thiab txias: Hom B muaj qhov kub siab heev, thaum Hom E muaj ntau qhov nruab nrab thiab qis.
Rooj: Hom | Ntev -lub sijhawm ua haujlwm kub | Luv -lub sijhawm ua haujlwm kub | Kev ntsuas tau zoo |
Hom B | 1600 degree | 1800 degree | 600 ~ 1700 degree |
Hom E | 800 degree | 900 degree | -200 ~ 900 degree |
Hom B tam sim no muaj qhov ntsuas kub siab tshaj plaws ntawm cov txheej txheem thermocouples thiab yog dav siv nyob rau hauv qhov kub siab tshaj -kub siv xws li metallurgy, ntsuas kub tsis tu ncua ntawm cov hlau molten, thiab aerospace cav combustion chambers.
Hom E thermocouples npog ntau qhov kub ntawm qhov qis mus rau nruab nrab, ua rau lawv tshwj xeeb tshaj yog haum rau siab - qhov ntsuas qhov tseeb ntawm -200℃txog 800℃. Lawv ruaj khov hauv oxidizing lossis inert cua nrog cov av noo siab.
Lus Cim: Hom B thermocouples muaj qhov kub tsis tshua muaj peev xwm qis dua 600℃(E(25 degree)≈-2μV), ua rau muaj kev ntsuas loj thiab ua rau lawv tsis haum rau chav tsev kub lossis qis - ntsuas kub. Hom E thermocouples, ntawm qhov tod tes, muaj siab rhiab heev nyob rau hauv qhov qis-kub ntau yam thiab yog ib tug ntawm ob peb lub hauv paus hlau thermocouples haum rau cryogenic ib puag ncig.
III. rhiab heev thiab teeb liab tso zis: Hom E yog deb tshaj li hom B
Hom E thermocouple: Muaj qhov siab tshaj plaws thermoelectric peev xwm thiab rhiab heev ntawm txhua tus qauv thermocouples, kwv yees li 68μV /℃(lossis 5.6μV / 0.1 degree).
Nws yog qhov zoo tshaj plaws rau kev ntsuas qhov ntsuas kub hloov pauv thiab tsim nyog siv rau hauv cov ntawv thov thermopile rau kev ntsuas qhov ntsuas kub.
Hom B thermocouple: Muaj qhov ntsuas kub qis tshaj plaws thiab qhov rhiab heev, tsuas yog kwv yees li 0.25μV / 0.1℃(ie, 2.5μV /℃).
Lub teeb liab tsis muaj zog, yuav tsum muaj lub siab -precision, qis- suab nrov tso rau kev nyeem kom raug.
Piv txwv piv txwv: Thaum rhuab mus rau 100 degree, tus E- hom outputs kwv yees li 6.8mV, thaum B- hom tsuas outputs kwv yees li 0.25mV, qhov sib txawv ntawm ze li ntawm 27 zaus. Qhov no txhais tau hais tias E- hom muaj qis dua rau cov ntaub ntawv tau txais thiab muaj zog tiv thaiv - muaj peev xwm cuam tshuam.
IV. Environmental Adaptability thiab kev txwv siv
Rooj Environmental Type | Hom B Performance | Hom E Kev Ua Haujlwm |
Oxidizing Atmosphere | Zoo heev, ntev - ruaj khov | Zoo heev, muaj zog oxidation tsis kam |
Txo / Sulfur-Nrog rau huab cua | Tsis haum, yooj yim brittle | Txwv tsis pub, constantan yog yooj yim corroded |
Inert/Vacuum Ib puag ncig | Yuav siv tau rau lub sijhawm luv luv | Yuav siv tau, tab sis yuav tsum muaj kev tiv thaiv tubing |
Humidity Ib puag ncig | Tsis muaj qhov tshwj xeeb zoo | Tsis rhiab rau high humidity, haum rau huab cua puag ncig |
Contamination Sensitivity | Siab, rhiab rau impurities | Nruab nrab, tab sis qhov tsis zoo electrode yog yooj yim corroded los ntawm sulfides |
Kev pom zoo: Hom B yog siv rau hauv qhov chaw huv, ultra- qhov kub thiab txias (xws li lub tshuab nqus tsev vacuum, nuclear reactors); Hom E yog qhov tsim nyog rau kev siv tshuaj lom neeg, khoom noj khoom haus, thiab kev siv tshuaj uas yuav tsum tau muaj kev nkag siab zoo thiab cov av noo, tab sis kev sib cuag nrog leej faj lossis txo cov pa roj yuav tsum zam.
V. Kev sib piv ntawm Cov Ntawv Thov Kev Sib Tham
Hom B Thermocouples: Siv nyob rau hauv ultra- kub thiab ntev - lub voj voog ua haujlwm xws li metallurgical blast furnaces, ntsuas kub tsis tu ncua ntawm cov hlau molten, ceramic sintering kilns, aerospace engine combustion chambers, thiab high -temperature testing devices.
Hom E Thermocouples: Siv nyob rau hauv nruab nrab - thiab qis- qhov kub thiab txias, siab - rhiab heev daim ntaub ntawv xws li kev soj ntsuam precision ntsuas kub, kev ua zaub mov, tshuaj sterilization, ib puag ncig xyuas, thiab electromagnetic cua sov rau cov menyuam kub tswj.
