Dab tsi yog lub neej ntawm cov xov ruaj khov -mounted junction box type platinum resistance thermometer

Lub neej ntev ntawm cov xov ruaj khov -mounted junction box type platinum resistance thermometer (xws li WZP-231 qauv) yog feem ntau ntawm 1.5 thiab 3 xyoos. Qhov tshwj xeeb lifespan yog cuam tshuam los ntawm ntau yam, nrog rau kev ua haujlwm ib puag ncig, kev teeb tsa zoo, qib txij nkawm, thiab cov txheej txheem tsim khoom. Raws li kev ua haujlwm zoo tshaj plaws, qee cov khoom lag luam zoo tuaj yeem ua haujlwm ruaj khov rau ntau dua 3 xyoos; Txawm li cas los xij, nyob rau hauv ib puag ncig hnyav uas muaj zog corrosion, kev co hnyav, lossis qhov kub thiab txias tsis tu ncua, lub neej ntev yuav luv dua li 1 xyoos.

 

I. Cov yam tseem ceeb cuam tshuam rau lub neej

Corrosivity ntawm Kev Ua Haujlwm Ib puag ncig

Nyob rau hauv cov xov xwm corrosive heev xws li acids, alkalis, thiab ntsev tsuag, yog tias cov khoom siv tiv thaiv tsis sib xws (xws li, siv 304 stainless hlau es tsis txhob 316L), nws yuav ua rau lub raj phab ntsa corrosion, ua rau raug thiab puas rau cov khoom siv sab hauv.

Yog tias lub thawv sib txuas tsis zoo kaw, cov dej noo nkag tau yooj yim ua rau lub davhlau ya nyob twg oxidation thiab txo cov rwb thaiv tsev, ua rau luv luv Circuit Court lossis teeb liab drift.

Mechanical Vibration thiab Stress

Hauv cov twj tso kua mis, compressors, lossis cov kav dej uas muaj kev vibration siab rau lub sijhawm ntev, kev sib txuas ntawm threaded yog yooj yim rau loosening. Kev ntxhov siab dua ntawm cov terminals tuaj yeem ua rau cov hlau lead detachment lossis qaug zog tawg ntawm platinum hlau.

Kev quab yuam nruj thaum lub sijhawm teeb tsa lossis tsis ua haujlwm los tiv thaiv -loosing washers yuav ua rau cov xov hnav thiab txo cov qauv kev ntseeg siab.

Qhov kub thiab txias ntau zaus

Thaum platinum tiv thaiv tus pas ntsuas kub ua haujlwm nyob ze lawv qhov ntsuas kub siab (500 degree) rau lub sijhawm ntev, cov khoom siv hluav taws xob thiab cov ntaub ntawv rwb thaiv tsev yuav muaj hnub nyoog sai dua.

Nquag pib- nres lub voj voog ua rau thermal expansion thiab contraction tuaj yeem tsim micro- qhov khoob ntawm cov hlau tiv thaiv raj thiab cov qauv sab hauv, txhawb kev nkag mus rau cov dej noo thiab oxidation.

Installation Properties

Cov xov tsis zoo los yog kev sib tw nruj heev tuaj yeem ua rau xov stripping lossis puas tsuaj rau lub sealing nto, cuam tshuam kev ua haujlwm tsis zoo thiab plua plav.

Untightly tightened terminals los yog tsis ua hauj lwm rau hauv pem teb lub shielding hlau ntawm ib tug taw tes yuav ua rau kom muaj kev tiv thaiv thiab kev pheej hmoo ntawm electromagnetic cuam tshuam.

 

II. Kev ntsuas tseem ceeb txhawm rau txuas lub neej ua haujlwm

Xaiv High Corrosion- Cov Khoom Siv Ua Haujlwm Nyob rau hauv qhov chaw corrosive, ua ntej siv 316L stainless hlau los yog Hastelloy tiv thaiv tubing. Cov thawv sib txuas yuav tsum yog ua los ntawm tag nrho cov -yas corrosion- cov khoom siv los yog cov hlau tsis muaj steel los txhim kho tag nrho cov kav ntev.

Xyuas kom ntseeg tau tias sealing: Siv lub thawv dej tsis sib haum (xws li "3" hom qauv hauv WZP-231). Hloov cov nplhaib sib khi tsis tu ncua thiab xyuas kom cov xov muaj kev sib koom ua ke thaum lub sijhawm teeb tsa los tiv thaiv kom tsis txhob xau.

Standardized Installation Operation: Siv lub torque ciaj ntswj los tswj kom nruj torque, tsis txhob overtightening uas yuav ua rau cov xov puas. Terminals yuav tsum tau nruj nreem nruj kom tsis txhob loosening uas yuav ua rau sparking los yog oxidation.

Siv Lub Sijhawm Ua Haujlwm: Ua qhov ntsuas kev tiv thaiv kev tiv thaiv txhua 6 lub hlis (Ntau dua lossis sib npaug rau 100MΩ yog ​​qhov siv tau). Tshawb xyuas cov hlua khi nruj txhua hli txhawm rau txheeb xyuas cov teeb meem tshwm sim sai.

 

III. Lifespan Reference nyob rau hauv txawv kev ua haujlwm

Table Operating Condition Type	Nruab Nrab Lifespan	Kev piav qhia
Ordinary Industrial Environment (Nyob, Tsis yog{0}} Corrosive)	2-3 xyoos	Piv txwv li, cua txias tshuab, kev cob qhia qhuav
Ib puag ncig Corrosive (me ntsis humid, Weakly Acid / Alkaline)	1.5-2 xyoos	Yuav tsum tau soj ntsuam tsis tu ncua ntawm sealing raws li txoj cai
Muaj zog Corrosive + High Vibration Ib puag ncig	Kwv yees li 1 xyoos	Pom zoo kom luv lub voj voog tshuaj ntsuam mus rau theem peb lub hlis twg
Nquag Siab -Cycling kub (piv txwv li, qhov cub kho cua sov)	1-1.5 xyoo	Thermal stress yog qhov tseem ceeb ntawm kev laus
Kev Kho Kom Zoo + Siab -Kev Xaiv Zoo	tuaj yeem ncav cuag 3 xyoos	Yuav tsum tau calibration tsis tu ncua thiab cov ntaub ntawv kaw

Tswv yim: Raws li cov ntaub ntawv kev lag luam ntawm Shanghai Automation Instrumentation Factory No. 3, WZP-231 platinum tiv thaiv tus pas ntsuas kub tau tsim nrog cov chaw ua haujlwm nyuaj hauv siab. Nws M27 × 2 tsau xov qauv muaj zoo sealing kev ua tau zoo thiab txhua yam muaj zog. Yog tias siv kom raug, nws lub neej feem ntau zoo dua rau cov khoom sib dhos zoo tib yam.

 

IV. Cov cim qhia txog qhov kawg ntawm Lifespan

Kev hloov pauv txawv txav hauv cov nqi tsis kam lossis qhib Circuit Court: Qhia platinum hlau tawg lossis txhuas hlau detachment.

Rwb thaiv tsev tsis tu ncua txo qis: yuav tsum ceeb toom yog tias nws poob qis dua 10MΩ;<1MΩ is considered a failure.

Qhov kub thiab txias tso tawm drift los yog hloov pauv: Qhov no yuav tshwm sim los ntawm kev sib cuag tsis zoo, cuam tshuam hluav taws xob, lossis cov khoom qub.

Cov dej tsub zuj zuj lossis corrosion hauv lub thawv sib txuas: Qhov no qhia tau tias tsis ua haujlwm thiab yuav tsum tau saib xyuas tam sim.

Yog tias ib qho ntawm cov xwm txheej saum toj no tshwm sim, txawm tias cov cuab yeej tseem tuaj yeem tso tawm cov teeb liab, nws yuav tsum tau hloov sai li sai tau kom tsis txhob muaj kev tswj xyuas qhov tsis raug vim kev ntsuas qhov yuam kev.