Rau cov khoom siv hluav taws xob sensor kev lag luam, lub hauv paus ntsiab lus ntsuas ntawm electromagnetic flowmeter yog Faraday txoj cai ntawm electromagnetic induction. Cov qauv ntawm electromagnetic flowmeter yog feem ntau tsim los ntawm magnetic circuit system, ntsuas conduit, electrode, plhaub, lining thiab converter. Nws yog feem ntau siv los ntsuas qhov ntim ntws ntawm cov kua conductive thiab slurries hauv cov kav dej kaw. Xws li cov kua qaub, alkalis, ntsev thiab lwm yam kua corrosive heev. Cov khoom no yog dav siv hauv roj av, tshuaj lom neeg, metallurgy, textile, khoom noj, tshuaj, papermaking thiab lwm yam lag luam, nrog rau kev tiv thaiv ib puag ncig, kev tswj hwm hauv nroog, kev tsim kho dej thiab lwm yam teb.
Thaum siv lub tshuab ntsuas dej electromagnetic, qee qhov kev ua tsis tiav ntawm cov khoom siv yuav tshwm sim. Feem ntau muaj ob hom kev ua tsis tiav hauv kev ua haujlwm: ib qho yog qhov ua tsis tiav ntawm lub cuab yeej nws tus kheej, uas yog, qhov ua tsis tiav los ntawm kev puas tsuaj rau cov khoom siv lossis cov khoom ntawm lub cuab yeej; qhov thib ob, qhov ua tsis tiav los ntawm cov laj thawj sab nraud, xws li kev teeb tsa tsis raug, kev cuam tshuam ntawm cov dej ntws, kev tso dej thiab kev ntsuas, thiab lwm yam.
Thaum lub tshuab ntsuas hluav taws xob tsis ua haujlwm, peb feem ntau yuav tsum tshuaj xyuas seb qhov khoom twg ua txhaum thiab tom qab ntawd xam seb yuav kho qhov teeb meem li cas.
1. Cov kev ua yuam kev feem ntau ntawm electromagnetic flowmeter - electromagnetic flowmeter tsis muaj cov teeb liab ntws tawm
Hom kev ua tsis tiav no feem ntau tshwm sim thaum siv, thiab feem ntau yog:
(1) Lub hwj chim ntawm lub cuab yeej tsis zoo li qub;
(2) Qhov kev sib txuas cable thiab qhov tso zis ntawm lub rooj tsav xwm fais fab tsis zoo;
(3) Cov kua dej ntws tsis ua raws li qhov yuav tsum tau teeb tsa;
(4) Cov khoom ntawm lub sensor puas lawm los yog muaj ib txheej nplaum rau ntawm phab ntsa sab hauv ntawm qhov ntsuas;
(5) Cov khoom siv hloov pauv puas lawm
Yuav daws li cas?
Yog tias qhov no tshwm sim, ua ntej xyuas seb lub hwj chim ntawm lub cuab yeej puas muaj teeb meem, paub tseeb tias lub hwj chim txuas nrog, xyuas seb qhov hluav taws xob ntawm lub rooj tsav xwm fais fab puas yog qhov qub, lossis sim hloov tag nrho lub rooj tsav xwm fais fab kom paub seb nws puas zoo. Xyuas kom cov cables zoo thiab txuas nrog kom raug. Xyuas qhov kev taw qhia ntawm cov kua dej thiab cov kua hauv cov yeeb nkab puv. Yog tias tsis muaj kua dej hauv lub sensor, koj yuav tsum hloov cov yeeb nkab lossis hloov txoj kev teeb tsa. Sim teeb tsa nws ntsug.
2. Lub teeb liab ntawm lub electromagnetic flowmeter tau me dua thiab me dua lossis lub teeb liab poob qis tam sim ntawd
Feem ntau ntawm cov kev ua yuam kev no yog tshwm sim los ntawm kev cuam tshuam ntawm cov ntsuas ntsuas lossis qhov chaw sab nraud, thiab qhov ua yuam kev tuaj yeem tshem tawm nws tus kheej tom qab kev cuam tshuam sab nraud raug tshem tawm. Txhawm rau kom ntseeg tau qhov tseeb ntawm kev ntsuas, cov kev ua yuam kev no tsis tuaj yeem tsis quav ntsej. Hauv qee qhov chaw tsim khoom, vim muaj kev co loj ntawm cov yeeb nkab ntsuas lossis kua, lub rooj tsavxwm ntawm lub flowmeter yuav xoob, thiab tus nqi tso zis kuj tseem yuav hloov pauv.
Yuav daws li cas?
(1) Paub meej tias nws puas yog qhov ua rau cov txheej txheem ua haujlwm, thiab cov kua dej ua suab nrov. Lub sijhawm no, lub flowmeter tsuas yog qhia qhov xwm txheej ntws kom tseeb, thiab qhov txhaum tuaj yeem tshem tawm nws tus kheej tom qab lub suab nrov tas.
(2) Kev cuam tshuam hluav taws xob los ntawm cov hluav taws xob sab nraud, thiab lwm yam. Xyuas seb puas muaj cov khoom siv hluav taws xob loj lossis cov tshuab vuam hluav taws xob ua haujlwm hauv qhov chaw ua haujlwm ntawm lub cuab yeej, thiab xyuas kom meej tias lub cuab yeej tau grounded thiab qhov chaw ua haujlwm zoo.
(3) Thaum cov kav dej tsis puv nrog kua lossis cov kua muaj cov pa npuas, ob qho tib si yog vim yog cov laj thawj ntawm cov txheej txheem. Lub sijhawm no, tus kws tshaj lij tuaj yeem raug nug kom paub meej tias tus nqi tso zis tuaj yeem rov qab mus rau qhov qub tom qab cov kua puv lossis cov pa npuas tau so.
(4) Lub rooj tsavxwm ntawm lub transmitter yog ib qho qauv plug-in. Vim yog qhov kev co loj ntawm cov kav dej ntsuas hauv qhov chaw lossis kua, lub rooj tsavxwm fais fab ntawm lub flowmeter feem ntau xoob. Yog tias nws xoob, lub flowmeter tuaj yeem raug rhuav tshem thiab lub rooj tsavxwm circuit tuaj yeem rov kho dua.
3. Lub ntsiab lus xoom ntawm lub tshuab ntsuas hluav taws xob tsis ruaj khov
Kev Tshawb Fawb Txog Qhov Ua Rau
(1) Cov kav dej tsis puv nrog kua lossis cov kua muaj cov pa npuas.
(2) Hauv kev xav, nws ntseeg tias tsis muaj kua ntws hauv lub twj tso kua mis, tab sis qhov tseeb muaj qhov ntws me me.
(3) Cov laj thawj rau cov kua (xws li kev tsis sib xws ntawm cov kua conductivity, electrode pollution, thiab lwm yam).
(4) Qhov rwb thaiv tsev ntawm lub voj voog teeb liab raug txo qis.
Yuav daws li cas?
Yuav tsum xyuas seb qhov nruab nrab puas muaj cov kav dej thiab seb puas muaj cua npuas hauv qhov nruab nrab. Yog tias muaj cua npuas, lub tshuab tshem cua tuaj yeem ntsia tau rau sab saud ntawm cov cua npuas. Kev teeb tsa kab rov tav ntawm lub cuab yeej kuj tuaj yeem hloov mus rau kev teeb tsa ntsug. Xyuas seb lub cuab yeej puas tau grounded zoo. Qhov kev tiv thaiv grounding yuav tsum tsawg dua lossis sib npaug rau 100Ω; qhov conductivity ntawm qhov nruab nrab conductive yuav tsum tsis pub tsawg dua 5μs / cm. Yog tias qhov nruab nrab sib sau ua ke hauv lub raj ntsuas, nws yuav tsum tau tshem tawm raws sijhawm. Tsis txhob khawb lub txheej thaum tshem tawm.
Lub sijhawm tshaj tawm: Lub Yim Hli-11-2022