Dej Dej Flow Meter:
Kev xaiv ntawmdej phwj flowmetertseem ceeb heev. Ua ntej tshaj plaws, nws yog ib qho tsim nyog yuav tsum paub txog cov yam ntxwv ntawm cov dej phwj tuaj, seb cov dej phwj tuaj puas muaj corrosive media, thiab seb cov dej phwj puas muaj impurities. Cov no yog cov kev xaiv tseem ceeb dua.
Qhov zoo ntawm kev xaiv electromagnetic flowmeter rau kev ntsuas dej phwj:
Txij li thaum kev lag luam hauv tsev siv hluav taws xob flowmeter nyob rau xyoo 1950s, nws tau siv thiab tsim sai hauv kev ntsuas dej hauv xyoo 1970 thiab 1980s. Lub hauv paus ntsiab lus ua haujlwm ntawm electromagnetic flowmeter yog raws li Faraday txoj cai ntawm electromagnetic induction, uas yog, ntsuas nruab nrab ntws perpendicular mus rau cov kev taw qhia ntawm cov magnetic teb kab, yog li ib tug induced electromotive quab yuam EX yog generated nyob rau hauv cov kev taw qhia perpendicular mus rau lub nruab nrab ntws thiab cov kab magnetic teb. ), lub electromagnetic flowmeter tsis cuam tshuam los ntawm lwm yam xws li kub, siab, viscosity, thiab lub ntiajteb txawj nqus, thiab tsis muaj qhov poob siab hauv qhov shrinkage lossis protruding qhov chaw hauv lub raj ntsuas. Tsis tas li ntawd, lub teeb liab pom los ntawm lub flowmeter caij yog qhov nruab nrab tus nqi ntawm cov kua. Tus nqi ntws yog qhov voltage uas hloov linearly, uas tsis muaj dab tsi ua rau lwm yam khoom ntawm cov kua dej thiab muaj qhov zoo.
Raws li cov yam ntxwv ntawm cov dej phwj tuaj nrog kev hloov pauv loj, impurities, qis corrosiveness, thiab qee yam hluav taws xob conductivity, nws yog ib qho kev xaiv zoo rau siv.electromagnetic flowmetersntsuas qhov ntws ntawm cov dej phwj tuaj. Nws yog compact hauv cov qauv, me me, yooj yim rau nruab, khiav lag luam thiab tswj. Piv txwv li, lub ntsuas ntsuas tau txais kev tsim qauv ntse thiab kev sib khi tag nrho yog ntxiv dag zog, kom nws tuaj yeem ua haujlwm ib txwm nyob hauv ib puag ncig hnyav. Lub electromagnetic flowmeter nrog neoprene hauv ob sab phlu thiab molybdenum stainless hlau electrode tuaj yeem raug xaiv kom ua tau raws li qhov yuav tsum tau ua ntawm kev ntsuas dej phwj tuaj.
Vim muaj kev tiv thaiv ib puag ncig, cov dej phwj tuaj thiab cov dej khib nyiab yuav tsum tau saib xyuas. Hauv kev tsim yav dhau los, ntau lub ntsuas ntsuas tau siv vortex flowmeters thiab orifice flowmeters. Hauv kev siv tswv yim, nws tau pom tias qhov ntsuas ntsuas ntsuas qhov ntsuas muaj qhov sib txawv loj ntawm qhov tseeb ntws, thiab nws tau zoo heev tom qab hloov mus rau ib qhoelectromagnetic flowmeter.