Smart Electromagnetic Flowmeter

Kakaretso

DWP letoto la liphaephe tsa mofuta o bohlale oa electromagnetic flowmeter ke phallo ea motlakase ea motlakase, e etselitsoeng ho latela JB/T9248-999 "Electromagnetic Flowmeter", e loketseng palo ea phallo ea mokelikeli oa conductive o nang le conductivity e fetang 5us / cm;sebaka sa bophara ba lebitso ke 5 Ho isa ho 3000, ke letoto la lihlahisoa tsa electromagnetic flowmeter tse kopanyang bohlale, kopanyo e nyane le e bobebe, ts'ebetso e mengata, ho nepahala ho phahameng le ts'epo e phahameng.E na le likarolo tse peli: sensor le smart converter.

DWP electromagnetic flowmeter e na le mefuta e mengata ea ts'ebeliso.E ka hlahisa letšoao le tloaelehileng la hona joale (4-20mA) tumellanong le protocol ea puisano ea HART ha e ntse e kopana le ho shebella le ho bonts'a setšeng, bakeng sa ho rekota, ho fetola le ho laola;e ka sebelisoa haholo indastering ea lik'hemik'hale, ts'ireletso ea tikoloho le indasteri ea masela., metallurgy, merafo, meriana, papermaking, phepelo ea metsi, lijo, tsoekere, ritelo le liindasteri tse ling bakeng sa tekanyo ea phallo ea metsi ea mecha ea phatlalatso ea conductive liphaepheng tsa tšebetso;ho phaella ho lekanya kakaretso mokelikeli conductive, ho ea ka litlhoko tse khethehileng tsa basebedisi ba, e ka boela lekanya conductive mokelikeli-tiileng tse peli-mohato Phallo, phallo ea phahameng viscosity lino le lino tse kang matsoai, acid e matla, le alkalis matla.

Mehaho

(1) Sensor:

Sensor haholo-holo e entsoe ka catheter ea ho lekanya, electrode ea ho lekanya, coil e tsosang takatso, mokokotlo oa tšepe, makenete le ntlo.

Measuring conduit: E entsoe ka conduit ea tšepe e sa hloekang, lesela le lesela le hokelang, 'me ke eona e tsamaisang tekanyo ea mokelikeli sebakeng sa sebaka seo e lokelang ho lekanyetsoa.

Ho lekanya li-electrode: para ea li-electrode tse kentsoeng leboteng le ka hare la kotopo ea ho lekanya, e pota-potileng ho tataiso ea phallo ea axial, e le hore mokelikeli o lekanyang o hlahise matšoao.

Excitation coil: Likhoele tse hlasimollang tse holimo le tse tlase tse hlahisang matla a khoheli ka har'a catheter ea tekanyo.

Iron core le magnetism: Matla a khoheli a hlahisoang ke khoele e hlasimollang a kenngoa ka har'a mokelikeli ebe o etsa potoloho ea makenete.

Khetla: sephuthelo sa bokantle ba seletsa.

(2) Sefetoleli:

Ke mitha ea bobeli e bohlale, e matlafatsang pontšo ea phallo le ho e bala ka k'homphieutha e le 'ngoe ho bonts'a phallo le palo e ntseng e eketseha,' me e ka hlahisa pulse, analog current le lipontšo tse ling bakeng sa ho lekanya kapa ho laola phallo ea mokelikeli.

(3) Foromo ea ho kopanya sehlahisoa:

E arotsoe ka mefuta e 'meli: mofuta o kopantsoeng le mofuta o arohaneng.

Mofuta o kopantsoeng: Sensor le converter li kentsoe karolong e le 'ngoe.

Mofuta o arohaneng: Sensor le converter li kenngoa ka thoko, 'me tsamaiso ea metering ea phallo e thehoa ka ho hokahanya likhoele.E le ho finyella litlhoko tsa tekanyo e fapaneng ea mecha ea litaba, lisebelisoa tsa lesela le li-electrode tsa sensor li ka ba le likhetho tse ngata.

Molao-motheo oa ho sebetsa

Molao-motheo o sebetsang oa electromagnetic flowmeter o ipapisitse le molao oa Faraday oa induction ea motlakase.Ka mantsoe a mang, ha mokelikeli o tsamaisang metsi o phalla ka phallo ea motlakase oa motlakase, ho tla hlahisoa matla a electromotive ho conductor.The induced electromotive force is propobility to the flow rate of conductive liquid, the magnetic induction intensity, le bophara ba conductor (bohare bo ka hare ba flowmeter), joalokaha ho bontšitsoe setšoantšong.

Matla a electromotive a susumelitsoeng a fumanoa ka para ea li-electrode leboteng la flowmeter, 'me lebelo la ho phalla le ka fumanoa ka ho bala.

The induced electromotive force equation ke: E=KBVD

Ka foromo: E induced bokhoni;D ho lekanya tube bophara bo ka hare;

B matla a ho kenngoa ha makenete;V karolelano ea lebelo la phallo;

K ke coefficient e amanang le kabo ea matla a khoheli le bolelele ba axial.