Ntse Electromagnetic Flowmeter

Txheej txheem cej luam

DWP series pipeline hom ntse electromagnetic flowmeter yog ib qho electromagnetic induction flowmeter, tsim raws li JB / T9248-999 "Electromagnetic Flowmeter", haum rau kev suav cov kua conductive nrog conductivity ntau dua 5us / cm;nominal txoj kab uas hla yog 5 txog 3000, nws yog ib tug series ntawm electromagnetic flowmeter khoom integrating txawj ntse, me me thiab lub teeb integration, multi-function, high precision thiab siab ntseeg.Nws muaj ob ntu: sensor thiab ntse converter.

DWP electromagnetic flowmeter muaj ntau yam kev siv.Nws tuaj yeem tso tawm tus qauv teeb liab tam sim no (4-20mA) raws li HART kev sib txuas lus raws tu qauv thaum ntsib qhov chaw saib xyuas thiab tso saib, rau kev kaw, kho, thiab tswj;nws tuaj yeem siv dav hauv kev lag luam tshuaj, kev tiv thaiv ib puag ncig, thiab kev lag luam textile., metallurgy, mining, tshuaj, papermaking, dej, khoom noj, qab zib, brewing thiab lwm yam lag luam rau cov kua ntws ntsuas ntawm conductive media nyob rau hauv cov txheej txheem pipelines;Ntxiv rau kev ntsuas cov kua hluav taws xob dav dav, raws li cov kev xav tau tshwj xeeb ntawm cov neeg siv, nws kuj tseem tuaj yeem ntsuas cov kua dej-kem ob-theem Flow, ntws cov kua dej siab thiab cov kua dej xws li cov ntsev, cov kua qaub, thiab muaj zog alkalis.

Cov qauv

(1) Sensor:

Lub sensor feem ntau yog tsim los ntawm kev ntsuas catheter, ntsuas electrode, excitation coil, hlau core, hlau nplaum thiab vaj tse.

Kev ntsuas cov kav dej: Nws yog tsim los ntawm cov kav dej tsis muaj steel hlau, hauv ob sab phlu thiab txuas flange, thiab yog cov cab kuj rau kev ntsuas ntawm cov kua dej los ntsuas.

Kev ntsuas hluav taws xob: ib khub ntawm electrodes ntsia rau ntawm phab ntsa sab hauv ntawm lub ntsuas ntsuas, qhov perpendicular mus rau axial ntws kev taw qhia, kom ntsuas cov kua tsim cov teeb liab.

Excitation coil: Lub sab sauv thiab qis excitation coils uas tsim ib qho chaw sib nqus hauv qhov ntsuas catheter.

Cov tub ntxhais hlau thiab hlau nplaum: Cov hlau nplaum uas tsim los ntawm cov coil excitation yog nkag mus rau hauv cov kua thiab tsim ib lub voj voog sib nqus.

Plhaub: lub ntim sab nraud ntawm lub ntsuas.

(2) Converter:

Nws yog ib qho kev txawj ntse theem nrab ntsuas, uas ua kom pom cov teeb liab ntws thiab suav nrog ib lub khoos phis tawj-chip los tso saib cov dej ntws thiab cov nqi sib sau, thiab tuaj yeem tso tawm cov mem tes, analog tam sim no thiab lwm cov cim rau kev ntsuas lossis tswj cov kua dej.

(3) Daim ntawv sib dhos khoom:

Nws tau muab faib ua ob hom: integrated type thiab split type.

Integrated hom: Lub sensor thiab converter yog ntsia rau hauv ib daim.

Split type: Lub sensor thiab converter yog ntsia nyias, thiab cov flowmetering system yog tsim los ntawm kev sib txuas cables.Yuav kom ua tau raws li qhov yuav tsum tau muaj ntawm kev ntsuas kev sib txawv, cov ntaub ntawv hauv ob sab phlu thiab electrode ntawm lub sensor tuaj yeem muaj ntau yam kev xaiv.

Txoj cai ua haujlwm

Lub hauv paus ntsiab lus ua haujlwm ntawm electromagnetic flowmeter yog raws li Faraday txoj cai ntawm electromagnetic induction.Uas yog, thaum cov kua conductive ntws los ntawm lub electromagnetic flowmeter, ib tug induced electromotive quab yuam yuav generated nyob rau hauv tus neeg xyuas pib.Lub induced electromotive quab yuam yog proportional rau qhov txaus tus nqi ntawm cov conductive kua, sib nqus induction siv, thiab qhov dav ntawm tus neeg xyuas pib (puab txoj kab uas hla ntawm lub flowmeter), raws li qhia nyob rau hauv daim duab.

Lub induced electromotive quab yuam yog kuaj los ntawm ib khub ntawm electrodes ntawm phab ntsa ntawm lub flowmeter, thiab tus nqi ntws tau los ntawm kev xam.

Qhov sib npaug ntawm qhov induced electromotive force yog: E = KBVD

Hauv cov mis: E induced peev xwm;D ntsuas raj sab hauv txoj kab uas hla;

B sib nqus induction siv;V nruab nrab ntws tshaj tawm;

K yog tus coefficient ntsig txog qhov sib nqus teb sib nqus thiab axial ntev.