Lub sij hawm teb ntawm hom B thermocouple yog dab tsi

 

Lub sij hawm teb ntawm hom B thermocouple feem ntau yog nyob ntawm ob peb vib nas this mus rau ntau pua vib nas this, nyob ntawm seb nws cov qauv tsim, cov khoom siv ntawm cov ntaub thaiv npog, txoj kab uas hla ntawm cov thermocouple hlau, thiab cov cua sov hloov ntawm qhov nruab nrab ntsuas. Feem ntau, feem ntau tus qauv B thermocouples muaj lub sij hawm teb thermal tsawg dua 150 vib nas this, qee qhov kev tsim kho kom zoo tuaj yeem ua rau luv dua li 10 vib nas this, thiab nthuav tawm lossis nrawm- cov qauv teb tuaj yeem ua tiav millisecond- theem ( kaum tawm milliseconds) cov sij hawm teb.

 

Kev txhais thiab ntsuas cov qauv ntawm lub sij hawm teb

Lub sij hawm teb ntawm lub thermocouple yog hais txog lub sij hawm xav tau rau nws cov teeb liab tso zis kom ncav cuag 63.2% ntawm qhov kub hloov pauv (piv txwv li, lub sij hawm tas li τ) thaum qhov kub hloov pauv tshwm sim. Qhov ntsuas no yog ib qho tseem ceeb parameter rau kev ntsuam xyuas qhov kev ua tau zoo ntawm qhov kub thiab txias sensors. Lub teb chaws cov qauv teev tseg tias lub sij hawm teb yuav tsum tau sim nyob rau hauv ib tug mob siab rau dej ntws sim ntaus ntawv nrog ib tug khiav ceev ceev ntawm 0.4 ± 0.05 m / s thiab ib tug kub theem nqi ntawm 40 ~ 50 degree. Txawm li cas los xij, vim tias qhov ntsuas kub tsis tshua muaj peev xwm ntawm Hom B thermocouples nyob ze ntawm chav tsev kub (tsuas yog li 15μV ntawm 80 degree), qhov ntsuas qhov tseeb ntawm qhov ntsuas kub tsawg - teb yog qhov nyuaj. Yog li ntawd, tus qauv tso cai rau siv hom S thermocouple sib dhos ntawm tib yam tshwj xeeb raws li kev hloov pauv rau kev sim.

 

II. Tej yam tseem ceeb cuam tshuam rau lub sij hawm teb

Structure thiab Dimensions: Qhov loj ntawm txoj kab uas hla thiab qhov tuab ntawm phab ntsa ntawm cov thermocouple thiab cov raj tiv thaiv, qhov thermal inertia ntau dua thiab lub sijhawm teb ntev dua. Piv txwv li, lub sij hawm teb ntawm Φ16mm tiv thaiv raj yog ntev dua li ntawm Φ6mm micro-encapsulation qauv.

Thermal Conductivity of Protective Tube Material: Metal protective tubes (such as stainless steel) have better thermal conductivity than ceramic tubes, lower thermal inertia, and faster response. However, in ultra-high temperature environments (>1300 degree), corundum (Al₂O₃) cov hlab ntsha ceramic feem ntau yog siv, uas, txawm hais tias muaj qhov kub thiab txias tsis kam, ua rau muaj kev tiv thaiv thermal.

Hlau txoj kab uas hla thiab ntsuas qhov kawg daim ntawv: Lub thinner cov hlau, qhov me me lub tshav kub muaj peev xwm thiab cov lus teb sai dua. Cov ntawv thov kev lag luam feem ntau siv 0.5mm galvanic hlau. Txo cov hlau loj kom qis dua 0.3 hli tuaj yeem txhim kho cov lus teb ceev, tab sis nws yuav txo cov neeg kho tshuab lub zog. Grounded los yog raug kev sib cuag teb sai dua li insulated hu.

Ntsuas nruab nrab thiab nruab ib puag ncig

Nyob rau hauv siab - ceev ntws kua los yog gases, convective tshav kub hloov yog muaj zog, thiab lub sij hawm teb luv luv (tsawg li ob peb feeb).

Nyob rau hauv cov pa roj los yog tsis tshua muaj thermal conductivity ib puag ncig, tshav kub hloov efficiency yog tsawg, thiab lub sij hawm teb yog ho ntev.

Qhov tob qhov ntxig yuav tsum tsis pub tsawg tshaj 10 npaug ntawm txoj kab uas hla ntawm lub raj tiv thaiv kom ntseeg tau tias qhov ntsuas kub ntsuas qhov kawg yog nyob rau hauv tag nrho kev sib cuag nrog nruab nrab.

 

III. Lub Sijhawm Teb Lub Sijhawm Sib piv

Hom qauv	Teb Sijhawm	Daim ntawv thov Scenario
Kev Tiv Thaiv lossis Tiv Thaiv	Kaum tawm milliseconds	Laboratory ceev ntsuas kub, airflow xyuas
Fast Response Type (Zoo hlau + nyias-Walled Tube)	<10 seconds	Dynamic kub tswj, txheej txheem optimization
Standard Industrial Hom (Φ16 Corundum Tube)	<150 seconds	iav kilns, ceramic firing
Thick-Walled Ob- Txheej Txheem Txheej Txheem	Ob peb feeb	corrosive heev lossis siab - ib puag ncig siab

Nco tseg: "Lub sijhawm teb" tsis sib npaug rau "lub sijhawm ruaj khov". Ua tiav cov lus teb ntawm ntau dua 90% feem ntau yuav tsum tau 3-5 npaug ntawm tus nqi τ; nyob rau hauv kev siv tswv yim, kev them nyiaj yuav tsum tau ua raws li qhov system cov yam ntxwv dynamic.

 

IV. Cov Lus Qhia Txog Kev Xaiv Engineering

Rau cov ntawv thov uas yuav tsum tau kuaj xyuas qhov kub thiab txias sai (xws li, txheej txheem kev debugging, kuaj xyuas qhov yuam kev), nplua - txoj kab uas hla thermocouples, hlau tiv thaiv raj, los yog cov qauv raug yuav tsum tau ua ntej.

Rau cov ntawv thov tseem ceeb ntev - lub sij hawm ruaj khov thiab siab - qhov kub thiab txias, thiab qhov twg lub sij hawm teb ntev dua me ntsis, yuav tsum xaiv cov qauv corundum tiv thaiv tube.

Tsis tu ncua calibration zoo saib xyuas lub sij hawm decay; Nws raug nquahu kom ua calibration txhua 6-12 lub hlis.