Yuav Ua Li Cas Txhim Kho Hom T Thermocouple
Tso lus
Hom T thermocouples (tooj liab-constantan) feem ntau yog siv rau hauv cov ntawv thov uas xav tau qhov tshwj xeeb ntawm qhov kub thiab txias, suav nrog cov khoom siv tshuaj txias txias, khoom noj khoom haus khov, thiab chav ntsuas kub kub, vim lawv qhov siab precision, ruaj khov, thiab zoo linearity nyob rau hauv qis - kub spectrum (-500℃3). Txhawm rau kom paub tseeb tias Hom T thermocouples ua haujlwm kom raug thiab kav ntev, lawv yuav tsum tau teeb tsa kom raug. Nws yog ib qho tseem ceeb uas yuav tsum tau ua cov kauj ruam zoo los tiv thaiv oxidation, txias junction faults, mechanical puas tsuaj, thiab cuam tshuam los ntawm ib puag ncig.
I. Xaiv thiab Npaj
Txheeb xyuas qhov Kev Ua Haujlwm Kub Kub: Hom T thermocouple yuav tsum tsis txhob ua haujlwm ntawm qhov kub siab tshaj 300℃rau lub sijhawm ntev. Rau lub sijhawm luv luv, nws tuaj yeem ua haujlwm ntawm qhov kub txog li 350 degree. Mus rau saum toj no qhov kub thiab txias tuaj yeem yooj yim ua rau tooj liab zoo electrode rau oxidize, uas yuav ua rau thermoelectric muaj peev xwm drift los yog tawg ntawm cov hlau.
Xaiv cov khoom tsim nyog rau cov ntaub thaiv npog:
Koj tuaj yeem siv cov hlau tsis muaj steel (xws li 304) lossis PTFE sheaths nyob rau hauv qhov chaw ntub lossis txias. When the temperature gets beyond 250 degrees Celsius, it's best to use a fully sealed stainless steel sheath or a high-temperature anti-oxidation paste to protect the copper electrodes.
Tshawb xyuas qhov tseeb ntawm lub thermocouple
Ua ntej kev txhim kho, xyuas kom meej tias lub raj tiv thaiv tsis tawg, cov hlua hluav taws xob muaj kev ruaj ntseg, thiab tsis muaj qhov khoov lossis tawg hauv cov xov hlau. Qhov no yuav pab tiv thaiv cov teeb meem kev ua haujlwm los ntawm kev puas tsuaj rau cov khoom siv.
II. Qhov twg los nruab nws thiab tob npaum li cas los muab tso rau hauv
Xaiv Cov Ntsiab Lus Ntsuas Qhov Zoo
Nyob deb ntawm qhov chaw uas cov dej ntws tsis ruaj khov, xws li lub luj tshib, li qub, thiab qhov kawg tuag. Xaiv ib qho chaw uas qhov kev khiav ceev tsis tu ncua thiab qhov ntsuas kub ntawm qhov ntsuas nruab nrab yog qhia kom raug.
Xyuas kom tseeb tias qhov tob tob yog txaus
Qhov tob tob yuav tsum yog tsawg kawg yog 8 mus rau 10 npaug ntawm txoj kab uas hla ntawm lub raj tiv thaiv, uas feem ntau qhia kom tsawg kawg yog 300 hli. Txhawm rau kom paub tseeb tias cov thermocouple taub kov qhov chaw nrog qhov siab tshaj plaws ntws tawm, nws yuav tsum tawm 5 mus rau 10 hli los ntawm qhov nruab nrab ntawm cov kav dej.
Txoj kev raug rau nruab
Txhawm rau txo qis latency thiab qhov tsis raug ntawm qhov ntsuas kub, tso qhov ntxig tawm tsam qhov kev taw qhia ntws ntawm qhov nruab nrab (piv txwv li -flow installation) los yog tsawg kawg yog perpendicular mus rau cov kev taw qhia ntws.
III. Tso tseg kev cuam tshuam thiab ua kev sib txuas hluav taws xob
Siv Cov Kev Pab Cuam Tshuam Uas Sib Tw
TX hom kev them nyiaj ua haujlwm (qhov zoo ntawm lub davhlau ya nyob twg xim av) yuav tsum tau siv, thiab qhov kev sib txuas ntawm polarity yuav tsum yog qhov tseeb los tiv thaiv kev ua yuam kev los ntawm kev sib tshuam txias txias.
Hom T thermocouples yog rhiab heev rau qhov kub thiab txias ntawm qhov sib txuas. Cov lus qhia muaj xws li:
Siv ib lub cuab yeej los ua qhov chaw khov;
Los yog muab qhov chaw txias txias rau hauv cov dej khov thiab dej sib tov ntawm 0 degree;
Txhawm rau kom qhov kub thiab txias, khaws cov cua sov kom deb ntawm cov thawv sib txuas lossis cov sib txuas thiab tsis txhob kov lawv nrog koj txhais tes.
Khaws Cov Hluav Taws Xob kom deb ntawm cov chaw muaj zog hluav taws xob: Cov hluav taws xob hluav taws xob thiab cov teeb liab xaim yuav tsum nyob deb li ntawm 15 cm sib nrug. Lawv yuav tsum tau teem rau ntawm lub kaum sab xis thaum lawv hla. Txhawm rau txiav qhov cuam tshuam ntawm electromagnetic, siv tinned tooj liab mesh shielded hlau nrog ib qho - taw tes hauv av.
Thermocouple xov hlau thiab txhuas yuav tsum muaj rwb thaiv tsev zoo kom lawv muaj kev nyab xeeb. Txhawm rau kom cov dej nag, av noo, lossis plua plav tawm hauv thiab ua rau luv luv, muab lub thawv sib txuas nrog lub hau npog.
IV. Txoj hauv kev los txhim kho tej yam thiab ua kom lawv muaj kev nyab xeeb ntawm kev puas tsuaj:
Siv cov qauv kho tau yooj yim vim tooj liab yog mos thiab tuaj yeem khoov thiab zoo li yooj yim. Caij nplooj ntoos hlav- loaded kho cov cuab yeej raug pom zoo kom tsis txhob muaj kev ntxhov siab thiab tawg.
Tsis txhob Ntxov Ntxov: ** Hom T thermocouple xov hlau yog nyias, tshwj xeeb tshaj yog nyob rau hauv daim ntaub ntawv xws li roj teeb qhov chaw ntsuas kub. Lawv yuav tsum tau ib txwm haum rau cov khoom raug ntsuas. Tom qab winding, siv daim kab xev los tuav hauv qhov chaw kom lub apex tsis khoov los ntawm kev ntxhov siab.
Ntxiv cov qauv kev txhawb nqa (Rau qhov sib sib zog nqus ntxig) ** Yog tias qhov tob tob tob tshaj 1 meter, nws yuav tsum muab tso rau hauv vertically nrog cov qauv kev txhawb nqa kom nws tsis txhob khoov lossis tawg vim nws qhov hnyav.
V. Ncej -Txoj Kev Txhim Kho thiab Kev Ntsuas
Kev ntxuav thiab tshuaj xyuas tsis tu ncua Txheeb xyuas cov plua plav pov tseg ntawm cov phab ntsa sab nrauv ntawm lub raj tiv thaiv thiab xoob xaim. Ntxuav tam sim kom txo tau cov thermal tsis kam.
Periodic Calibration Industrial T-hom thermocouples yuav tsum tau ntsuas txhua 12 lub hlis kom paub meej qhov ntsuas qhov tseeb raws li tus qauv JJG 351-1996.
Lifespan Considerations Nyob rau hauv qis - kub, huv si ib puag ncig, nws yuav siv tau rau 3-5 xyoo. Yog hais tias qhov kev khiav hauj lwm kub mus txog 300℃los yog muaj corrosive cua, lub neej yuav luv luv, yuav tsum tau hloov ua ntej.
