Thermocouples yog cov cuab yeej ntsuas kub tseem ceeb hauv ntau qhov kev lag luam. Ntawm ntau hom, platinum-rhodium thermocouples sawv tawm rau lawv cov kev ua haujlwm kub thiab qhov tseeb. Kab lus no yuav qhia txog cov ntsiab lus ntawm platinum-rhodium thermocouples, nrog rau lawv cov kev siv, qhov zoo tshaj plaws thermocouple hlau, thiab muaj pes tsawg leeg ntawm S-hom thermocouples.
Dab tsi yog hom platinum-rhodium thermocouples?
Muaj peb hom tseem ceeb ntawmplatinum-rhodium thermocouples: B-hom, R-hom, thiab S-hom. Cov thermocouples no paub txog lawv qhov kub thiab txias thiab feem ntau siv rau hauv cov ntawv thov uas yuav tsum tau ntsuas qhov ntsuas kub kom raug.
1. Hom B (Platinum 30% Rhodium / Platinum 6% Rhodium): Qhov kub thiab txias: 0 ° C txog 1700 ° C, Nta: Hom B thermocouples yog qhov ruaj khov thiab tuaj yeem ntsuas qhov kub thiab txias. Feem ntau siv nyob rau hauv high-temperature furnaces thiab kilns.
2. Hom R (Platinum 13% Rhodium / Platinum): Qhov kub thiab txias: -50 ° C txog 1600 ° C, Nta: Hom R thermocouples ntaus qhov sib npaug ntawm cov nqi thiab kev ua haujlwm zoo. Lawv yog siv nyob rau hauv ntau yam kev lag luam daim ntaub ntawv nrog rau cov iav ntau lawm thiab hlau ua.
3. Hom S (Platinum 10% Rhodium / Platinum): Qhov kub thiab txias: -50 ° C txog 1600 ° C, Nta: Hom S thermocouples paub txog lawv qhov tseeb thiab ruaj khov. Lawv feem ntau siv nyob rau hauv lub chaw soj nstuam thiab hauv kev lag luam uas tswj qhov kub thiab txias yog qhov tseem ceeb.
Dab tsi yog qhov zoo tshaj plaws thermocouple hlau?
Lub hom phiaj tseem ceeb rau kev txiav txim qhov zoo ntawm cov khoom yog nyob rau hauv nws qhov zoo. Cov khoom sib txawv muaj cov qauv zoo sib txawv, thiab qhov zoo ntawm platinum-rhodium thermocouple hlau tuaj yeem txiav txim los ntawm plaub yam khoom nram qab no. Ua ntej, platinum-rhodium hlau muaj qhov kub thiab txias thiab tuaj yeem tiv taus qhov kub thiab txias yam tsis muaj degradation. Qhov kev ruaj ntseg no ua kom qhov ntsuas qhov ntsuas kub zoo tshaj qhov kub ntawm qhov dav. Thib ob, platinum-rhodium thermocouples muab qhov ntsuas qhov kub thiab txias, ua rau lawv zoo tagnrho rau cov ntawv thov uas xav tau qhov tseeb nruj. Tsis tas li ntawd, platinum thiab rhodium kuj muaj kev tiv thaiv corrosion siab, ua kom lub neej kev pab cuam thiab kev ntseeg siab ntawm thermocouple hlau nyob rau hauv ib puag ncig hnyav. Lub durability ntawm platinum-rhodium thermocouple hlau ua rau nws tsim nyog rau kev siv mus sij hawm ntev hauv kev lag luam kev siv, txo kev xav tau kev hloov ntau zaus. Yog tias qhov yuav tsum tau ntsuas qhov tseeb, ruaj khov, oxidation tsis kam, thiab lwm yam yog siab heev, platinum-rhodium thermocouple hlau yog qhov kev xaiv zoo tshaj.
Dab tsi yog kev siv platinum thermocouple hlau?
Platinum thermocouple hlauyog ib qho tseem ceeb hauv kev tsim cov platinum-rhodium thermocouples. Nws cov khoom tshwj xeeb ua rau platinum-rhodium thermocouple hlau haum rau ntau yam kev siv kub. Hauv kev lag luam aerospace, platinum thermocouple hlau yog siv los ntsuas qhov kub thiab txias ntawm cov tshuab dav hlau thiab lwm yam khoom siv kub. Kev ntsuas kub kom raug yog qhov tseem ceeb rau kev nyab xeeb thiab kev ua haujlwm ntawm cov cuab yeej siv dav hlau. Platinum thermocouple hlau yog siv nyob rau hauv industrial furnaces los saib xyuas thiab tswj qhov kub thiab txias. Lawv ruaj khov thiab raug xyuas kom meej tias lub cub tawg ua haujlwm nyob rau hauv qhov xav tau ntawm qhov kub thiab txias, yog li txhim kho kev ua haujlwm thiab cov khoom zoo. Tsis tas li ntawd, cov txheej txheem tsim iav yuav tsum tau tswj xyuas qhov kub thiab txias, thiab platinum thermocouple hlau yog siv los saib xyuas qhov kub ntawm cov iav rauv kom ntseeg tau tias cov iav ntau lawm zoo ib yam. Hauv kev tshawb fawb tshawb fawb, ntsuas qhov ntsuas kub yog qhov tseem ceeb rau kev sim thiab sau cov ntaub ntawv. Platinum thermocouple hlau yog siv los ntsuas qhov kub thiab txias hauv ntau qhov kev sim hauv chav kuaj, muab cov ntaub ntawv txhim khu kev qha thiab raug.
Platinum-rhodium thermocouples (xws li hom B, R, thiab S) yog cov cuab yeej tseem ceeb rau kev ntsuas qhov kub thiab txias hauv cov ntawv thov kub. Thaum xaiv qhov zoo tshaj plaws thermocouple hlau, platinum-rhodium thermocouples feem ntau yog thawj qhov kev xaiv vim lawv ua tau zoo nyob rau hauv ib puag ncig hnyav. Platinum-rhodium thermocouples ua lub luag haujlwm tseem ceeb hauv ntau qhov kev lag luam, muab qhov tseeb thiab ruaj khov uas xav tau rau cov ntawv thov kub.
Post lub sij hawm: Sep-20-2024