Sib nqus qib gauges yog cov cuab yeej siv ntau tshaj plaws rau qib zaub, ntsuas, thiab tswj ntawm ntau yam txheej txheem ntim. Lawv muab cov txiaj ntsig zoo xws li cov qauv yooj yim, kev ua haujlwm yooj yim thiab txhim khu kev qha, ruaj khov, tsis muaj nqi, thiab kev saib xyuas yooj yim. Lawv tuaj yeem muab cov khoom siv hauv zos lossis ua ke nrog cov chaw taws teeb tswj lossis cov chaw hloov pauv rau kev ntsuas thiab tswj, thiab tau siv dav hauv kev lag luam xws li lub zog, roj av, tshuaj lom neeg, metallurgy, kev tiv thaiv ib puag ncig, nkoj tsim, kev tsim kho, thiab kev ua zaub mov.
Cov yam ntxwv ntawm Kev Ntsuas Nruab Nrab - Kev Txiav Txim Cov Khoom thiab Float Xaiv
Lub cev muaj zog:
Qhov ntom ntom (ρ): Qhov ntsuas tseem ceeb tshaj plaws. Lub ntab ntom ntom yuav tsum nyob nruab nrab ntawm qhov nruab nrab ntom ntom ntom ntom ntom ntom ntom ntom ntom. Feem ntau, qhov nruab nrab ntom ntom ntau dua lossis sib npaug li 0.45 g / cm³ yog xav tau. For media with very low density (such as liquefied gas or certain solvents), special low-density floats (such as hollow titanium alloys) are required.
Viscosity: Rau siab -viscosity media (xws li cov roj hnyav lossis asphalt), lub ntab qhov kev txav txav yuav tsum raug txiav txim siab, uas yuav cuam tshuam rau cov lus teb ceev lossis xav tau lub ntab loj dua.
Kev huv huv / impurities: Rau cov xov xwm uas muaj cov khoom siv, nws yooj yim rau crystallization, nws yooj yim rau polymerization, los yog cov xov xwm viscous heev, cov kab noj hniav loj, ntab loj, thiab flange kev sib txuas qauv yuav tsum tau ua kom tsis txhob txhaws. Yog tias tsim nyog, chav dej / dej tsho tiv thaiv los yog hluav taws xob cua sov hom tuaj yeem xaiv los tiv thaiv kev tshaj tawm.
Chemical Properties:
I. Hlau Floats: Haum rau nruab nrab mus rau siab siab, kuj kub kub, los yog tsis yog -corrosive media; siab mechanical zog thiab zoo stability.
Carbon Steel / 20 # Hlau
1. Nta: Tus nqi qis, siab zog; haum rau cov uas tsis yog -corrosive media ntawm qhov kub thiab txias;
2. Cov xwm txheej siv tau: Cov xov xwm tsis zoo xws li dej, roj cav, roj av, roj av, thiab lwm yam; feem ntau siv hauv cov tso tsheb hlau luam thiab cov roj tso tsheb hlau luam;
3. Kev txwv: Tsis muaj corrosion resistant; kev sib cuag nrog cov kua qaub, alkalis, lossis dej ntsev yuav ua rau xeb, ua rau muaj kev hloov pauv hauv qhov hnyav thiab cuam tshuam rau kev ntsuas.
304 Stainless hlau
1. Yam ntxwv: Ib qho chromium-nickel alloy nrog qhov ceev ntawm kwv yees li 7.93 g / cm³. Nws tiv taus corrosion dav dav (xws li dej tshiab, chav dej, thiab tsis muaj zog acids thiab alkalis) thiab kub siab (tsawg dua los yog sib npaug li 400 degree). 304 stainless hlau muaj qhov xeb tsis kam nyob rau hauv qhuav, huv si. Raws li cov pa oxygen los yog chlorine atoms nyob rau hauv cov huab cua los yog kua tsis tu ncua nkag mus, los yog hlau atoms tsis tu ncua precipitate rau hlau oxide, hlau nto yog tas li corroded.
2. Cov xwm txheej siv tau: Khoom noj khoom haus- qib kua (xws li dej haus thiab syrups), kais dej, tshuaj lom me me (xws li dilute sulfuric acid concentration<10%), organic solvents (methanol, ethanol, toluene, oils, and esters, etc.);
3. Qhov zoo: Tus nqi siab -kev ua tau zoo; nws yog cov khoom siv feem ntau siv hlau ntab hauv kev lag luam.
316L Stainless hlau
1. Nta: Raws li 304 stainless hlau, molybdenum yog ntxiv, ua rau qhov ceev ntawm 7.98 g / cm³. Qhov no txhim kho nws cov corrosion kuj. Vim yog cov ntsiab lus molybdenum thiab cov ntsiab lus qis dua, nws muaj peev xwm tiv taus carbide nag lossis daus ntawm qhov kub thiab txias, txhim kho nws cov kev tiv thaiv kom tsis txhob muaj ntsev, ntau yam inorganic thiab organic acids, alkalis, thiab ntsev. Zuag qhia tag nrho, nws qhov kev ua tau zoo dua li 304 stainless hlau. Nws yog corrosion ntau dua - tiv taus ntawm qhov kub thiab txias thiab pom zoo corrosion kuj ntawm chav tsev kub. Nws yog tshwj xeeb yog resistant rau chloride ion corrosion (xws li seawater thiab brine), thiab muaj zoo heev kub thiab kub tsis kam; Txawm li cas los xij, nws tsis tshua muaj oxidizing acids (xws li nitric acid), molybdenum{10}}muaj cov hlau tsis muaj zog tsis tshua muaj zog rau cov kua qaub no.
2. Cov xwm txheej siv tau: Seawater, brine, nitric acid, phosphoric acid, qee cov organic solvents (xws li methanol thiab ethanol), thiab ib puag ncig corrosive heev xws li cov nroj tsuag tshuaj, marine engineering chaw, thiab cov dej khib nyiab.
3. Nco tseg: Tseem tsis haum rau cov xov xwm uas muaj corrosive heev xws li hydrofluoric acid thiab muaj zog alkalis (xws li concentrated sodium hydroxide).
Titanium alloy (TA2 / TC4)
1. Cov yam ntxwv: Titanium alloys yog tus yam ntxwv ntawm lub zog siab thiab siab thermal zog. Lawv qhov ceev yog feem ntau nyob ib ncig ntawm 4.51 g / cm³, tsuas yog 60% ntawm cov hlau; qhov ceev ntawm ntshiab titanium yog ze rau cov hlau zoo tib yam. Qee qhov siab - lub zog titanium alloys tshaj lub zog ntawm ntau cov qauv hlau alloy. Yog li ntawd, lub zog tshwj xeeb (lub zog / qhov ntom) ntawm titanium alloys yog ntau dua li lwm cov khoom siv hlau, tso cai rau kev tsim cov khoom nrog lub zog siab, zoo rigidity, thiab lub teeb yuag. Lawv muaj zog corrosion kuj (tshwj tsis yog rau hydrofluoric acid thiab concentrated alkalis), siab zog, thiab lub teeb yuag. Titanium alloy floats feem ntau siv rau cov kua xov xwm nyob rau hauv qhov kub thiab txias (tsawg dua los yog sib npaug rau 300 degree), tshwj xeeb tshaj yog thaum ntsuas nruab nrab muaj qhov ntom ntom.
2. Cov xwm txheej siv tau: Cov xov xwm corrosive heev (xws li cov concentrated nitric acid, chromic acid, dej hiav txwv), kub thiab kub siab; feem ntau siv nyob rau hauv high -kawg tshuaj thiab nuclear fais fab nroj tsuag.
3. Kev txwv: tus nqi siab dua; feem ntau tsuas yog xaiv thaum 316L titanium tsis tuaj yeem ua tau raws li qhov xav tau.
Hastelloy C-276
1. Cov yam ntxwv: tiv taus cov kua qaub uas muaj zog heev (xws li sulfuric acid, hydrochloric acid, acetic acid), muaj zog alkalis, thiab siab - kub thiab siab - av noo ib puag ncig; kub tsis kam mus txog 600 degree.
2. Cov xwm txheej siv tau: Cov cheeb tsam uas muaj corrosive heev (xws li cov kua roj corrosive hauv cov tshuaj reactors), siab - kub thiab siab - cov kav xa dej siab.
Qhov zoo: Haum rau yuav luag txhua yam tsis yog - txo cov acids uas muaj zog, ua rau nws yog "siab-kev xaiv kawg" ntawm cov khoom siv corrosion- tiv taus hlau.
II. Tsis yog-metallic Floats
Tsim nyog rau corrosive heev, tsis tshua muaj -kub, lossis qis- ib puag ncig siab. Muab tshuaj zoo stability tab sis muaj cov neeg kho tshuab tsis tshua muaj zog.
Polytetrafluoroethylene (PTFE)
1. PTFE yas yog ib qho ntawm lub ntiaj teb cov corrosion feem ntau - cov ntaub ntawv resistant, feem ntau hu ua "King of Plastics." Nws muaj cov tshuaj lom neeg ruaj khov thiab ua haujlwm zoo heev rau cov tshuaj tiv thaiv corrosion, xws li cov kua qaub muaj zog, muaj zog alkalis, thiab muaj zog oxidants. Nws muaj zog heev corrosion kuj (tiv taus yuav luag txhua yam tshuaj lom neeg, suav nrog hydrofluoric acid, concentrated acids thiab alkalis), thiab kub thiab kub tsis kam (-200℃~ 260℃). Nws yog non-stick thiab tsis yooj yim tsim scale.
2. Tsis haum rau concentrated nitric acid, chlorinated solvents, aromatics, aliphatic kua, thiab lwm yam.
2. Cov xwm txheej siv tau: Cov xov xwm muaj corrosive heev (xws li hydrofluoric acid, concentrated hydrochloric acid), zaub mov- qib siab- kua purity (xws li dej tshuaj), thiab yooj yim crystallizing media.
3. Kev txwv: Lub zog tsis muaj zog txhua yam; tsis haum rau siab - ib puag ncig siab (feem ntau Tsawg dua lossis sib npaug li 1.6MPa); creep tej zaum yuav tshwm sim nyob rau hauv ntev -lub sij hawm kub kub.
Polyvinyl Chloride (PVC / UPVC)
1. Polyvinyl chloride (PVC) muaj qhov ruaj khov physicochemical zog, yog insoluble hauv dej, cawv, thiab roj av, thiab muaj roj tsawg thiab dej vapor permeability. Nyob rau hauv chav tsev kub, nws tuaj yeem tiv taus ntau yam ntawm hydrochloric acid, sulfuric acid hauv qab 90%, nitric acid 50-60%, thiab caustic soda daws hauv qab 20%. Nws muaj qhov zoo xws li cov tshuaj tiv thaiv corrosion zoo, txhua yam muaj zog, thiab hluav taws xob rwb thaiv tsev, ua rau nws tsim nyog rau kev ntsuas ntsuas hauv ntau qhov chaw corrosive. Nws muaj cov kua qaub zoo thiab alkali tsis kam (xws li dilute sulfuric acid, sodium hydroxide), tus nqi qis, thiab lub teeb yuag.
2. Cov xwm txheej siv tau: Corrosive media nyob rau hauv ib txwm kub thiab tsis tshua muaj siab (xws li, electroplating kev daws teeb meem, dej phwj tuaj), pej xeem cov dej thiab cov kua dej;
3. Kev txwv: Tsis zoo siab -kub tsis kam (tsawg dua lossis sib npaug li 60 degree), yooj yim corroded los ntawm cov kuab tshuaj organic (xws li roj av, cawv).
Polypropylene (PP)
1. PP yog cov ntawv luv rau polypropylene, semi-crystalline thermoplastic nrog lub melting point ntawm 164-170℃thiab qhov ceev ntawm 0.90-0.91 g/cm³. Nws muaj qhov cuam tshuam tsis zoo thiab mechanical toughness. Nws yog tsim rau kev tsim ntau yam yeeb nkab thiab fittings, muab zoo corrosion kuj. Feem ntau nws yog qhov zoo tshaj plaws rau kev siv nrog qhov kub thiab txias T Tsawg dua lossis sib npaug li 60℃thiab siab P Tsawg dua lossis sib npaug rau 0.4MPa. Thaum PP yas ntab tuaj yeem raug corroded los ntawm muaj zog oxidizing acids xws li concentrated nitric acid thiab fuming sulfuric acid, lawv tseem tuaj yeem o thiab muag muag los ntawm qis -molecular-yuag aromatic hydrocarbons, aliphatic hydrocarbons, thiab chlorinated hydrocarbons. Lawv tiv taus rau feem ntau cov organic thiab inorganic acids, alkalis, thiab ntsev, tab sis lawv cov corrosion kuj tsis zoo li cov kav dej polytetrafluoroethylene (PTFE). Vim nws qhov rhiab heev rau lub teeb ultraviolet, nws cov huab cua tsis kam yog qis me ntsis thaum siv sab nraum zoov.
2. Kev siv tsim nyog: Cov kua qaub thiab alkali tsis muaj zog hauv chav sov (xws li dej ammonia, dilute nitric acid, hydrochloric acid, dilute sulfuric acid, thiab lwm yam inorganic corrosive kua hauv cov nroj tsuag chiv), thiab cov khoom siv kho dej haus.
3. Ceev faj: Tsis haum rau cov khoom muaj zog oxidizing media (xws li concentrated nitric acid thiab potassium permanganate).
Fluoroethylene Propylene (FEP)
1. Nta: Kev ua tau zoo ze rau PTFE, muaj zog corrosion kuj, zoo weldability, thiab superior yooj piv rau PTFE.
2. Cov ntawv thov tsim nyog: Floats xav tau cov txheej txheem nyuaj (xws li cov floats tsis xwm yeem), thiab nruab nrab - mus rau - qhov chaw tsis muaj zog corrosive.
3. Qhov zoo: Cov txheej txheem yooj yim dua li PTFE, tuaj yeem ua rau nyias - phab ntsa floats, thiab haum rau qis -viscosity media.
Composite Material Floats
Kev sib xyaw kom zoo ntawm cov hlau thiab tsis yog -hlau, cov floats no yog siv rau hauv daim ntawv thov tshwj xeeb:
Hlau -lined PTFE
Lub txheej txheej yog hlau (muab lub zog), thaum lub puab txheej los yog nto yog coated nrog PTFE (corrosion kuj). Haum rau siab -siab, corrosive ib puag ncig (xws li hydrochloric acid cia tanks ntawm 10MPa).
Stainless hlau -lined PTFE
Txoj kev tsim khoom yuav tsum tau ntxig lub PTFE raj rau hauv lub cev stainless hlau raj, tom qab ntawd flanging ob kawg thiab nruj nreem haum rau flange sealing nto. Vim PTFE lub siab chemical stability thiab zoo heev chemical corrosion kuj, nws ntev -lub sij hawm ua hauj lwm kub yog -200-+250 degree, thiab nws yog feem ntau siv raws li ib tug hauv ob sab phlu corrosion-cov ntaub ntawv resistant. Stainless hlau-lined magnetic level gauges yog tsim rau cov xov xwm corrosive heev xws li cov kua qaub, muaj zog alkalis, thiab muaj zog oxidants, tab sis tsis tuaj yeem siv rau hauv cov kua dej permeable xws li kua chlorine thiab kua bromine.
Stainless hlau -lined PTFE
Sib nqus qib gauges muaj cov qauv tsim muaj zog thiab kev tiv thaiv corrosion, thiab feem ntau yog siv nyob rau hauv kev ua haujlwm ntawm qhov kub thiab txias T Tsawg dua los yog sib npaug rau 120℃thiab P Tsawg dua los yog sib npaug rau 1.6MPa. 304 stainless hlau floats lined nrog PTFE feem ntau siv rau kev ntsuas cov corrosive media, xws li cov kua qaub, muaj zog 2. MPa.
Stainless hlau floats lined nrog FEP
Fluoropolymer Polyethylene muaj zoo corrosion kuj rau PTFE, exhibiting siab tshuaj stability thiab tsis kam mus tshuaj corrosion. Lawv cov kev khiav hauj lwm kub yog me ntsis qis dua PTFE, nrog lub siab tshaj plaws kev khiav hauj lwm kub ntawm 200 degree. Lawv kuj nquag siv los ua cov ntaub ntawv hauv ob sab phlu rau kev tiv thaiv corrosion, tab sis kim dua PTFE. Zoo ib yam li PTFE hauv ob sab phlu, stainless hlau FEP liners koom nrog lub raj FEP rau hauv lub cev stainless hlau raj, flanging ob kawg, thiab nruj nreem haum rau flange sealing nto. Vim tias qhov sib txawv ntawm kev tsim cov txheej txheem ntawm FEP thiab PTFE, FEP tuaj yeem siv tsis tau tsuas yog hauv cov xov xwm corrosive xws li muaj zog acids, muaj zog alkalis, thiab muaj zog oxidizing cov neeg ua haujlwm, tab sis kuj tseem muaj cov kua chlorine thiab kua bromine, yog li nthuav nws daim ntawv thov ntau yam.
Stainless hlau lined nrog PP
Stainless hlau lined nrog PP feem ntau yog siv los ntsuas qhov tsis muaj zog corrosive media xws li qaug zog acids thiab tsis muaj zog alkalis. Nws tsis tsim nyog siv rau hauv cov kua dej uas muaj corrosive heev xws li concentrated nitric acid, acid mixs, chlorinated solvents, aliphatic solvents, thiab aromatic hydrogens. Vim nws cov hlau -lined qauv, PP tubing muaj qhov kub thiab txias siab dua piv rau kev siv polypropylene (PP) lossis polyvinyl chloride (PVC) tubing ib leeg.
Txoj Cai Xaiv
1. Media Compatibility: Ua ntej xaiv cov khoom siv raws li corrosiveness (acid, alkali, oxidizing) ntawm nruab nrab kom tsis txhob yaj lossis corroding lub ntab.
2. Kub thiab Siab: Xaiv cov khoom siv hlau (xws li 316L, Hastelloy) rau qhov kub thiab txias, thiab tsis yog- cov khoom siv hlau (xws li PTFE) rau qhov kub thiab txias.
3. Density Matching: The float material density must be less than the medium density (otherwise it cannot float). Piv txwv li, thaum ntsuas qis- cov xov xwm ceev (piv txwv li, roj av, kwv yees li 0.7 g / cm³), cov khoom siv hnyav (xws li PP, aluminium alloy) yuav tsum tau xaiv.
4. Viscous lossis Easily Crystallizing Liquids (piv txwv li, asphalt, syrup): Xaiv ib hom tsho uas muaj cov cua sov los yog cov roj kub kub los tiv thaiv qhov nruab nrab los ntawm solidifying thiab clogging qhov ntsuas qib.
5. Txoj kab uas hla ntawm cov hlau nplaum ntab yuav tsum xyuas kom muaj qhov sib txawv ntawm qhov ntab thiab cov phab ntsa sab hauv ntawm lub raj ntsuas, tso cai rau lub ntab txav mus los ntawm kev ywj pheej nce thiab nqis yam tsis ua rau tilting ntau dhau ntawm lub raj ntsuas. A gap of 1–3.5 mm is generally recommended. 6. When the ratio of medium density to float density is within the range of 0.85-1.15, the float can operate stably. Yog tias nws dhau qhov ntau, qhov kev them nyiaj ceev tuaj yeem ua tiav los ntawm kev hloov cov khoom ntab (piv txwv li, PP yas lossis 316L stainless hlau) txhawm rau tshem tawm cov kev ntsuas yuam kev tshwm sim los ntawm buoyancy imbalance. Medium density is the lifeline for float selection: the accurate medium density at the operating temperature must be provided. Kev sib txawv ntawm qhov ntom ntom yuav ua rau lub ntab ntws los yog ntab ntawm qhov siab tsis raug, ua rau muaj kev puas tsuaj loj heev. Txhawm rau kom yooj yim vaporized media (xws li LPG), kev hloov pauv hauv cov kua ntom ntom nrog qhov kub thiab txias yuav tsum tau txiav txim siab.
6. Tus nqi sib npaug: Ua ntej cov khoom siv nrog tus nqi siab -kev ua tau zoo thaum ua tau raws li qhov yuav tsum tau ua (piv txwv li, 304 stainless hlau hloov 316L, PTFE es tsis txhob Hastelloy).
Cov ntsiab lus tseem ceeb rau kev xaiv thiab siv
Txheej Txheem Kev Ua Haujlwm - Txiav txim siab ntsuas qhov ntsuas, qhov ntsuas kub, thiab cov qauv
Txiav txim siab cov yeeb nkab loj thiab cov khoom ntab raws li qhov ceev, qhov kub thiab txias, siab, thiab corrosivity. Txiav txim siab hom ntab (tus qauv / tsawg ntom / tshwj xeeb) raws li qhov ceev thiab ntsuas ntau. Txiav txim siab qhov ntsuas qhov ntsuas thiab kev sib txuas (flange tus qauv, ntsuas qhov ntsuas, sealing nto) raws li qhov siab. Txiav txim siab qhov ntev ntawm lub cev raws li qhov ntsuas ntau (xav txog thaj tsam qhov muag tsis pom).
Kev Ua Haujlwm Siab (P): Qhov ntsuas siab ntawm qib ntsuas yuav tsum siab dua lossis sib npaug rau qhov siab tshaj plaws ua haujlwm ntawm lub thawv. Kev ntsuas siab: PN1.0, PN1.6, PN2.5, PN4.0, PN6.3 MPa (Suav teb chaws tus qauv), Chav Kawm 150, 300, 600 (American standard). Rau siab- cov kev mob siab, cov yeeb nkab tuab phab ntsa thiab cov qauv welded tag nrho yuav tsum tau ua.
Ua hauj lwm kub (T): Qhov ntsuas kub ntawm qhov ntsuas theem thiab cov ntsaws ruaj ruaj yuav tsum siab dua los yog sib npaug rau qhov siab tshaj plaws / qis ua haujlwm kub ntawm qhov nruab nrab.
For high-temperature conditions (>200 degree), siab -kub magnetic ntab yog yuav tsum tau.
Ambient Kub: Yuav tsum muaj kev tiv thaiv khov rau hauv thaj chaw txias heev; Thaum tshav kub kub dissipation yuav tsum tau txiav txim siab nyob rau hauv siab -kub ib puag ncig.
Kev ntsuas qhov ntau thiab qhov tseeb - Txiav txim siab lub cev ntev thiab kev teeb tsa
Ntsuas Range (L): Txiav txim siab raws li qhov ua tau zoo ntawm cov kua theem siab ntawm lub thawv. Lub cev ntev ntawm qib ntsuas yog feem ntau 100-200mm ntev dua li qhov ntsuas ntau (rau flange / threaded mounting thiab qhov muag tsis pom cheeb tsam). Kev ntsuas dav dav yog muaj (piv txwv li, 300mm txog 6000mm lossis ntev dua).
Accuracy: Generally ±10mm or ±5mm (under standard density and non-turbulent conditions). Qhov tseeb yog feem ntau cuam tshuam los ntawm qhov chaw ntab thiab qhov kev daws teeb meem ntawm lub flapper.
Qhov muag tsis pom kev: Qhov kev ncua deb ntawm qhov chaw flange lossis threaded interface mus rau thawj flapper. Thaum xaiv ib tus qauv, xyuas kom meej tias cov kua dej qis tshaj plaws yog siab tshaj hauv qab ntawm thaj chaw dig muag thiab cov kua dej siab tshaj plaws yog qis dua qhov chaw dig muag.
Txhim kho qhov yuav tsum tau muaj thiab Interfaces - Ua kom ntseeg tau kev sib txuas
Txoj kev sib txuas
Flange Connection (Feem ntau): Txheem flanges (GB, HG, JB, ANSI, DIN, JIS), yuav tsum phim lub thawv flange tus qauv, siab ntsuas, thiab sealing nto hom (RF, FF, RTJ).
Threaded Connection: Tsim nyog rau qis - siab, me me - daim ntaub ntawv txoj kab uas hla (G, NPT, R).
Clamp Connection (Sanitary): Khoom noj khoom haus thiab kev lag luam tshuaj.
Center Distance (Flange Type): Hais txog qhov kev ncua deb ntawm qhov chaw sib khi ntawm ob lub flanges, uas yuav tsum ua kom haum rau qhov nruab nrab ntawm qhov sib txuas ntawm ob lub flanges ntawm lub thawv.
Installation Orientation: Cov yeeb nkab tseem ceeb yuav tsum tau muab tso rau hauv vertically kom ntseeg tau tias kev txav mus los ntawm cov ntab. Lub vaj huam sib luag pom yuav tsum fim ib qho yooj yim pom kev taw qhia. Sab mounting, sab saum toj / hauv qab mounting, thiab lwm yam, yog nyob ntawm yeem.
Kev Yuav Tsum Tau Ua Haujlwm Ntxiv - Nthuav Kev Saib Xyuas thiab Tswj Kev Muaj Peev Xwm
Tej thaj chaw deb Transmitter (4-20mA/HART): Integrated reed switch/magnetostrictive/magnetoresistive sensor, outputting analog level signals to DCS/PLC. Qhov tseeb, qhov yuav tsum tau ua pov thawj tawg, thiab lub zog hluav taws xob yuav tsum tau txhais kom meej.
Switching Tswb: Integrated magnetic switch (qhov sib thooj hloov) outputs ib tug switching teeb liab ntawm lub teeb kua theem rau tswb los yog interlock tswj.
Cov Lus Qhia Txog Kev Pom Zoo: Cov txheej txheem rwb thaiv tsev thiab cov cua sov tracing, cov kua dej / qhov cua, thiab cov txheej txheem tshwj xeeb kev sib txuas.
Explosion-Cov ntaub ntawv pov thawj
Cov huab cua tawg (xws li cov nroj tsuag petrochemical) xav tau tawg - cov khoom pov thawj pov thawj.
Hom Flameproof (Ex d): Hom Hom; lub enclosure tuaj yeem tiv thaiv kev tawg hauv qhov tsis muaj kev puas tsuaj thiab tiv thaiv cov nplaim hluav taws.
Intrinsically Safe Type (Ex ia/ib): Haum rau siab - qhov chaw muaj kev pheej hmoo xws li Zone 0; yuav tsum muaj kev tiv thaiv kev nyab xeeb.
Teeb pom kev zoo: Rau hmo ntuj lossis tsawg- qhov chaw teeb pom kev zoo, ib qho hluav taws xob sib nqus hluav taws xob ob- xim hom yog xaiv tau.
Kev teeb tsa
1. Ua ntej kev teeb tsa, tshuaj xyuas thiab ntxuav lub raj ntsuas kom tsis txhob vuam slag lossis cov khib nyiab los ntawm kev cuam tshuam cov ntab txav.
2. Nruab ntsug; deviation yuav cuam tshuam qhov ntab thiab ua rau kev ntsuas yuam kev.
3. Lub thawv ntim flange yuav tsum tsis txhob cuam tshuam ncaj qha rau ntab. Lub flange interface yuav tsum tau zam los ntawm cov khoom noj khoom haus kom tiv thaiv kev ntsuas kev hloov pauv.
4. Nruab nyob rau hauv ib qho chaw uas yooj yim rau kev soj ntsuam thiab tswj.
5. Yuav tsum tsis muaj qhov muaj zog sib nqus nyob ze, xws li lub cev muaj zog loj lossis cov hloov pauv uas tuaj yeem cuam tshuam cov teeb liab ntsuas; Cov ntaub ntawv sib nqus yuav tsum tsis txhob nyob ze ntawm lub ntsuas ntsuas lub cev, xws li siv cov hlau los khi, vim qhov no tuaj yeem ua rau kev ntsuas yuam kev.
6. Thaum txhim kho qhov sib nqus ntab, qhov sib nqus, hnyav kawg yuav tsum tig mus rau sab saud; tsis txhob nruab nws upside down, vim qhov no yuav ua rau kev ntsuas yuam kev. Feem ntau, lub ntsiab lus qhia lub raj muaj cov khoom siv lub caij nplooj ntoos hlav tsis nyob ntawm ob qho kawg los tiv thaiv lub ntab los ntawm kev puas tsuaj lossis deformed los ntawm kev qhib lub valve thaum lub sijhawm ua haujlwm lossis tawm. Cov kev ceev faj:
Tsis yog- cov khoom sib nqus yuav tsum tsis txhob nyob ze ntawm qhov ntsuas kom tiv thaiv kev cuam tshuam; qhov nruab nrab yuav tsum tsis muaj xim hlau impurities uas tuaj yeem ua rau ntab qias neeg, hnyav, tsis tuaj yeem ntab, lossis ua rau jamming; siv cov hlua hlau rau kev khi, tsis yog hlau clamps lossis cov xov hlau; Thaum muab tso rau hauv kev ua haujlwm, ua ntej qhib lub valve sab saud kom tso cai rau qhov nruab nrab nkag mus, tom qab ntawd maj mam qhib lub qis qis kom tso cai rau qhov nruab nrab ntws mus rau hauv kev sib luag, tsis txhob nce nrawm ntawm cov ntab uas tuaj yeem ua rau lub phaj flip los yog ntxeev sab rau malfunction lossis tso saib tsis meej pem; qhov nruab nrab yuav tsum huv si thiab tsis muaj cov khoom impurities uas tuaj yeem ua rau ntab rau jam; ntxuav thiab tswj lub vaj huam sib luag tsis tu ncua.
Common Troubleshooting
1. Qhov kev ncua deb ntawm lub vaj huam sib luag thiab cov ntab yog qhov loj heev, ua rau lub zog tsav tsis txaus ntawm lub ntab hlau nplaum, ua rau lub phaj phaj tsis tig. Txhim kho lub vaj huam sib luag kom ruaj khov tiv thaiv lub ntab.
2. Cov hlau nplaum nyob rau hauv lub phaj phaj yog me me dhau los yog cov hlau nplaum ploj, ua rau lub phaj phaj tsis tig los yog tig txawv txav. Hloov nws.
3. Cov dej los yog plua plav impurities nkag mus rau hauv lub vaj huam sib luag, ua rau nws nyuaj rau lub phaj phaj tig. Tshem tawm thiab ntxuav . 4. Qhov ntsuas kub qis qis ua rau qhov nruab nrab khov, tiv thaiv lub ntab los ntawm kev txav thiab ntsuas qib los ntawm kev qhia cov kua theem kom raug. Nce rwb thaiv tsev los yog cua sov tracing.
5. Lub ntab yog puas los yog daig, los yog qib ntsuas mechanism yog qias neeg los yog txhaws. Hloov cov ntab thiab ntxuav lub tog raj kheej ntab.
Level Gauge lossis Level Gauge Xim Thaiv Dhia
1. Cov kua dej nrawm nrawm lossis cov dej ntws tawm ua rau lub ntab nce thiab poob sai. Kho cov kua dej kom raug thiab siv cov hlau nplaum calibration kom swb cov qib ntsuas kab los yog qib ntsuas.
2. Lub ntab hlau nplaum tsis muaj zog. Hloov cov magnetic ntab.
Loj qhia yuam kev
1. Float seal tsis ua haujlwm ua rau dej nkag mus rau hauv ntab, ua rau muaj kev hloov pauv hauv qhov hnyav ntawm ntab. Tshawb xyuas lub ntab thiab hloov nws yog tias tsim nyog.
2. Qhov nruab nrab qhov ntom ntom tsis sib haum nrog cov qauv tsim. Confirm that the liquid density matches the design parameters and recalibrate the level gauge.
3. Hlau filings thiab av nyob rau hauv lub ntab. Tshem tawm cov ntab thiab ntxuav nws.
4. Lub inlet valve yog thaiv. Tshem tawm lossis hloov nws.
5. Sab nraud muaj zog sib nqus cuam tshuam. Disconnect qhov kev cuam tshuam.
IV. Tsis muaj kev qhia los ntawm qib ntsuas
1. Float detached los yog puas. Reinstall lossis hloov cov ntab uas puas lawm.
2. ntab daig los ntawm cov khoom txawv teb chaws. Ntxuav sab hauv ntawm qib ntsuas kom tshem tawm cov khoom txawv teb chaws.
3. Cov huab cua loj lossis npuas hauv qhov ntsuas qib. Xyuas kom tsis muaj cua lossis npuas hauv qhov ntsuas ntsuas.
Kev qhia qeeb lossis lus teb qeeb
1. Scale los yog deposits nyob rau hauv lub pipeline obstructive float txav. Ntxuav cov kav dej theem kom tshem tawm cov nplai thiab cov nyiaj tso cia.
2. Hlau filings thiab av adhering rau ntab. Ntxuav cov kav dej theem kom tshem tawm cov ntaub ntawv hlau, nplai, thiab tso nyiaj. Tshem tawm cov ntab, ntxuav nws, thiab muab nws rov qab siv.
3. Weakened magnetism ntawm ntab. Hloov cov magnetic ntab.
4. Tilted installation. Kho cov ntab yuav tsum tau ntsia vertically.
5. Clogged inlet valve. Tshem tawm lossis hloov.
Faded los yog tsis meej qhov taw qhia ntawm Flip Plate
1. Faded flip phaj vim siv ntev. Hloov lub phaj faded.
2. Ib puag ncig yam xws li tshav ntuj raug lossis corrosive gases. Nce kev tiv thaiv.
Tej thaj chaw deb Sib Nqus Flip Phaj Level Gauge Teeb meem
I. Tej thaj chaw deb hloov pauv
1. Tsis zoo cable zoo, tsis tsim nyog installation, los yog tsis txaus grounding ntawm lub shielding txheej. Hloov cov cable, xyuas kom zoo installation, thiab muab kev txhim khu kev qha hauv av.
2. Oxidation, hlau shavings, los yog dej ingress ntawm cov hlau terminals. Tshem tawm oxidized cable xaus thiab hloov cov terminals. Ntxuav lub thawv sib txuas thiab xyuas kom ruaj ntseg sealing.
3. Kev sib txuas xoob ntawm cov hlua hluav taws xob. Rov qab txuas cov xov hlau thiab ceev cov terminal screws.
4. Muaj zog sib nqus cuam tshuam nyob ze. Disconnect qhov kev cuam tshuam.
II. Tsis muaj kev hloov nyob rau hauv tej thaj chaw deb theem
1. Kev puas tsuaj ntab; hloov.
1) Kev tsim lub zog ntab tsis raug ua rau nws lub qhov tsua nyob rau hauv siab . 2. Float Jammed
2. Float Jammed
1) Tsis tiav lossis tsis tuaj yeem welds ntawm qhov sib koom ua rau cov vuam tawg hauv qhov siab, tso dej nkag rau hauv ntab.
3) Lub ntab demagnetizes vim siv ntev lossis kub kub, ua rau nws siv tsis tau.
4) Cov hlau nplaum xoob hauv lub ntab tiv thaiv nws los ntawm kev ua haujlwm zoo.
1. Float Jammed
1) Qhov ntsuas kub qis qis ua rau ntab dej khov thiab ua rau tsis muaj zog. Nce rwb thaiv tsev los yog cua sov tracing.
2) Lub float's magnetism attracts hlau filings los yog lwm yam kab mob, ua rau nws ua rau jammed thiab txav tsis tau. Ntxuav thiab reinstall lub ntab.
3) Cov xov xwm qias neeg ua rau lub ntab ntab ntws mus, tiv thaiv kom tsis txhob nce lossis poob. Tshem tawm cov xov xwm, ntxuav lub ntab, thiab rov nruab nws.
4) Lub float lub kaum sab xis yog tilted, cuam tshuam rau nws txoj kev txav ntsug . 3. Lub reed hloov tau puas, thiab cov reed hloov hu ib txwm nyob rau hauv lub xeev kaw. Tshem tawm cov theem transmitter, nrhiav qhov hloov pauv puas lawm, thiab hloov nws.
III. Qhov kev nyeem ntawv nyob deb ntawm qhov sib txawv ntawm qhov sib txawv, thiab qhov taw qhia hauv cheeb tsam kuj qhia kev nyeem ntawv tsis tu ncua.
1. Ua los ntawm cov hlau nplaum tsis muaj zog ntawm cov ntab. Hloov lub ntab.
2. Ib co reed keyboards puas lawm, los yog cov reed keyboards tsis zoo soldering. Hloov cov hloov reed puas los yog lub transmitter.
IV. Cov lus qhia hauv zos yog qhov qub, tab sis qhov kev nyeem ntawv nyob deb dhau yog siab dhau.
1. Lub resistor nyob rau hauv lub transmitter tau detached, ua rau ib tug qhib Circuit Court. Nrhiav tus detached resistor thiab solder nws ruaj ntseg.
2. Ib qho kev laus cable sib koom ua ke tau tso cai rau cov dej nkag mus rau hauv lub foob, tsim kom muaj lub voj voog thib ob tam sim no superposition. Tshem tawm cov laus cable sib koom ua ke, rov txuas cov xaim, rov ua dua thiab tiv thaiv nws, lossis hloov lub cable.
V. Cov zaub hauv zos yog qhov qub, tab sis qhov kev nyeem ntawv nyob deb deb yog txawv txav.
1. Tsis zoo soldering ntawm cov resistor. Nrhiav cov neeg pluag soldering thiab solder nws ruaj ntseg.
2. 3. Yog tias qhov nruab nrab kub siab dhau, cov ntawv hlau nthuav dav thaum cua sov, ua rau lub reed hloov mus kaw. Xaiv lub siab - kub resistant hom.
4. Yog hais tias qhov nruab nrab kub tseem siab dhau rau lub sijhawm ntev, cov hlau nplaum tsis muaj zog. Hloov lub ntab.
Thaum kuaj xyuas cov xwm txheej ua haujlwm ntawm cov hlau nplaum ntab ntawm - qhov chaw, qhov kev sim zoo sib xws tuaj yeem ua tau siv ib qho me me ntawm cov hlau ferrous, raws li qhia hauv daim duab hauv qab no. Rau kev sim thaum lub sij hawm ua kua theem nce thiab poob, ib qho me me ntawm cov hlau nyias nyias tuaj yeem siv los tuav cov hlau nplaum. Saib xyuas nws lub zog nce thiab nqis nrog ntab. Yog hais tias nws tsis txav, lub ntab yog daig; yog tias nws txav nrog lub ntab, nws ua haujlwm li qub.
Xaus
Sib nqus qib gauges yog ib qho tseem ceeb ntawm kev ntsuas cov kua qib ntsuas. Lawv cov kev xaiv tsis yog ib qho teeb meem ntawm parameter stacking, tab sis cov txheej txheem txheej txheem engineering uas yuav tsum tau nkag siab tob txog cov txheej txheem txheej txheem, cov yam ntxwv nruab nrab, thiab cov ntsiab lus ntawm cov khoom siv. Strictly adhering to the principles of "density matching as the foundation, material corrosion resistance as a guarantee, pressure and temperature determining the grade, correct installation ensuring operation, and regular maintenance extending lifespan" is essential to ensure its long-term stable, accurate, and safe service to the production process.
