Mefuta ea li-transmitters tsa khatello

Ho itlhahisa ho bonolo ha mochini o fetisang khatello

E le sensor ea khatello eo tlhahiso ea eona e leng letšoao le tloaelehileng, mochine oa khatello ke sesebelisoa se amohelang khatello ea khatello le ho e fetola hore e be pontšo e tloaelehileng ea tlhahiso ka tekanyo.E ka fetola maemo a khatello ea 'mele ea khase, mokelikeli, joalo-joalo e utluoang ke sensor ea sele ea mojaro hore e be mats'oao a tloaelehileng a motlakase (joalo ka 4-20mADC, joalo-joalo) ho fana ka lisebelisoa tsa bobeli tse kang ho bonts'a lialamo, lirekoto, balaoli, jj. tekanyo le pontsho Le taolo ya tshebetso.

Sehlopha sa li-transmitter tsa khatello

Hangata li-transmitters tseo re buang ka tsona li arotsoe ho latela molao-motheo ona:
Li-transmitters tsa khatello ea capacitive, li-transmitters tse thibelang khatello, li-transmitters tsa khatello ea maikutlo, li-semiconductor pressure transmitters, le li-piezoelectric pressure transmitters bakeng sa tekanyo e phahameng ea maqhubu.Har'a tsona, li-transmitters tse hanyetsanang ke tsona tse sebelisoang ka ho fetisisa.Capacitive pressure transmitter e nka transmitter ea Rosemount's 3051S e le moemeli oa lihlahisoa tsa boleng bo holimo.

Li-transmitters tsa khatello li ka aroloa ka tšepe, ceramic, diffused silicon, monocrystalline silicon, sapphire, sputtered film, joalo-joalo ho ea ka likaroloana tsa khatello ea maikutlo.

• Metal pressure transmitter e na le ho nepahala ho fokolang, empa e na le tšusumetso e fokolang ea mocheso, 'me e loketse libaka tse nang le mefuta e mengata ea mocheso le litlhoko tse fokolang tsa ho nepahala.
• Li-sensor tsa khatello ea ceramic li na le ho nepahala ho betere, empa li angoa haholo ke mocheso.Li-ceramics li boetse li na le molemo oa ho hanyetsa tšusumetso le ho hanyetsa kutu, tse ka sebelisoang tšimong ea karabo.
• Ho nepahala ha phetisetso ea khatello ea silicon e pharalletseng e phahame haholo, 'me mocheso oa mocheso le oona o moholo, kahoo matšeliso a mocheso a hlokahala pele a ka sebelisoa.Ho feta moo, esita le ka mor'a matšeliso a mocheso, khatello e ka holimo ho 125 ° C e ke ke ea lekanyetsoa.Leha ho le joalo, mocheso oa kamore, sensitivity coefficient ea diffused silicon ke makhetlo a 5 ho feta a ceramics, kahoo hangata e sebelisoa tšimong ea tekanyo e nepahetseng e phahameng.
• Single crystal silicon pressure transmitter ke sensor e nepahetseng ka ho fetesisa ts'ebetsong ea indasteri.Ke mofuta o ntlafalitsoeng oa silicon e senyehileng.Ha e le hantle, theko e boetse e ntlafatsoa.Hona joale, Yokogawa oa Japane ke moemeli tšimong ea khatello ea silicon ea monocrystalline.
• Mochine oa khatello ea sapphire ha o nahane ka liphetoho tsa mocheso, 'me o na le litšobotsi tse ntle tsa ho sebetsa esita le tlas'a maemo a phahameng a mocheso;safire e na le khanyetso e matla haholo ea mahlaseli;ha ho na pn drift;e ka sebetsa ka mokhoa o tloaelehileng tlas'a maemo a mabe ka ho fetisisa a ho sebetsa 'me e ka tšeptjoa Ts'ebetso e phahameng, ho nepahala hantle, phoso e fokolang ea mocheso, le ts'ebetso e phahameng ea litšenyehelo.
• The sputtering thin film pressure transmitter ha e na sekhomaretsi leha e le sefe, 'me e bonts'a botsitso ba nako e telele le ho ts'epahala ho feta sensor ea stiy strain gauge;ha e amehe haholo ke mocheso: ha mocheso o fetoha 100 ℃, ho hoholeha ha zero ke 0.5% feela.Ts'ebetso ea eona ea mocheso e phahame haholo ho feta sensor ea khatello ea silicon e pharalletseng;ho phaella moo, e ka kopana ka ho toba le mecha ea phatlalatso e senyang.

Melao-motheo ea mefuta e fapaneng ea li-transmitters tsa khatello

• Molao-motheo oa transmitter ea khatello ea capacitive.

Ha khatello e sebetsa ka ho toba holim'a diaphragm ea ho lekanya, diaphragm e hlahisa deformation e nyenyane.Potoloho e nepahetseng e phahameng holim'a diaphragm ea ho metha e fetola phetoho ena e nyenyane hore e be motlakase o lekaneng haholo o lekanang le khatello le ho lekana le motlakase oa excitation.Signal, ebe o sebelisa chip e inehetseng ho fetolela lets'oao lena la motlakase hore e be lets'oao la hajoale la 4-20mA kapa lets'oao la motlakase la 1-5V.

• Molao-motheo oa transmitter e pharalletseng ea silicon

Khatello ea seaplane e lekantsoeng e sebetsa ka kotloloho ho diaphragm ea kutlo (hangata diaphragm ea 316L), e etsa hore diaphragm e hlahise micro displacement e lekanang le khatello ea sehare, e fetola boleng ba ho hanyetsa ba sensor, le ho e lemoha ka Potoloho ea Wheatstone Phetoho ena, 'me e fetole le ho hlahisa lets'oao le tloaelehileng la tekanyo e tsamaellanang le khatello ena.

• Molao-motheo oa monocrystalline silicon khatello ea transmitter

Li-sensor tsa khatello ea piezoresistive li hahiloe ho sebelisoa phello ea piezoresistive ea silicon e le 'ngoe ea kristale.Sephaphatha se le seng sa crystal silicon se sebelisoa e le ntho ea elastic.Ha khatello e fetoha, silicon e le 'ngoe ea kristale e hlahisa mathata, e le hore ho hanyetsa khatello ka ho toba ho eona ho hlahise phetoho e lekanang le khatello e lekantsoeng, ebe letšoao le tsamaisanang le phallo ea motlakase le fumanoa ke potoloho ea borokho.

• Molao-motheo oa ho fetisa khatello ea ceramic

Khatello e sebetsa ka ho toba karolong e ka pele ea ceramic diaphragm, e bakang deformation e nyenyane ea diaphragm.Mohanyetsi o teteaneng oa filimi o hatisitsoe ka morao ho diaphragm tsa ceramic mme o hokahane le borokho ba Wheatstone (borokho bo koetsoeng) ka lebaka la phello ea piezoresistive ea varistor , Borokho bo hlahisa molumo o matla oa motlakase o lekanang le khatello le ho lekana le motlakase oa ho hlasimolla. .Ka kakaretso e sebelisetsoa ho lekanya khatello ea li-compressor tsa moea, li-ceramics tse ngata li sebelisoa.

• Molao-motheo oa ho fetisa khatello ea mali

Li-transmitters tse sebelisoang ka ho fetesisa tsa khatello ea khatello ke li-metal resistance gauge le li-semiconductor strain gauge.Metal resistance strain gauge ke mofuta oa sesebelisoa se nang le kutloelo-bohloko se fetolang phetoho ea khatello karolong ea teko hore e be lets'oao la motlakase.Ho na le mefuta e 'meli ea sekala sa terata le sekala sa tšepe.Hangata tekanyo ea khatello e tlamahane ka thata ho matrix a mechanical strain ka sekhomaretsi se khethehileng.Ha matrix e le tlas'a khatello ea maikutlo, tekanyo ea khatello ea ho hanyetsa e boetse e senyeha, e le hore boleng ba ho hanyetsa ha tekanyo ea khatello bo fetohe, e le hore The voltage e sebelisoang ho resistor e fetohe.Li-transmitters tsa khatello ea li-strain gauge li batla li le seoelo 'marakeng.

• Sapphire pressure transmitter

Transmitter ea khatello ea safire e sebelisa molao-motheo oa ho sebetsa oa ho hanyetsa khatello, e nka likarolo tse tebileng tsa silicon-sapphire, 'me e fetola lets'oao la khatello hore e be lets'oao le tloaelehileng la motlakase ka potoloho ea amplifier e inehetseng.

• Sephatlalatsi sa khatello ea filimi

Karolo e hlokolosi ea khatello ea sputtering e etsoa ke theknoloji ea microelectronics, e etsa borokho bo tiileng le bo tsitsitseng ba Wheatstone holim'a diaphragm ea tšepe e sa hloekang.Ha khatello ea sehare se lekantsoeng se sebetsa holim'a diaphragm ea rekere ea tšepe e sa hloekang, borokho ba Wheatstone ka lehlakoreng le leng bo hlahisa lets'oao la tlhahiso ea motlakase le lekanang le khatello.Ka lebaka la ts'ebetso ea eona e ntle ea ho hanyetsa, lifilimi tse hlabollang hangata li sebelisoa liketsahalong tse nang le khatello ea maikutlo khafetsa, joalo ka lisebelisoa tsa hydraulic.

Litlhokomelo tsa khetho ea mochine o fetisang khatello

• Khetho ea boleng ba khatello ea transmitter:

Ntlha ea pele, fumana boleng bo phahameng ba khatello e lekantsoeng tsamaisong.Ka kakaretso, o hloka ho khetha transmitter e nang le mefuta e mengata ea khatello e ka bang makhetlo a 1.5 ho feta boleng ba boleng bo phahameng, kapa u tlohelle mofuta o tloaelehileng oa khatello ho oela holim'a mochine o fetisang khatello.1/3 ~ 2/3 ea mefuta e tloaelehileng e boetse ke mokhoa o tloaelehileng.

• Ke mofuta ofe oa "pressure medium":

Mekelikeli le seretse sa viscous li tla thibela likou tsa khatello.Na metsoako kapa lintho tse senyang li tla senya lisebelisoa tse ho transmitter tse amanang ka kotloloho le mecha ena ea litaba.
Thepa ea mochini o fetisang khatello e akaretsang o hokahanang le seaplane ke tšepe e sa hloekang ea 316.Haeba sehare se sa chese ho 316 tšepe e sa jeleng paate, joale ha e le hantle li-transmitters tsohle tsa khatello li loketse ho lekanya khatello ea seaplane;
Haeba sehare se senya ho fihla ho 316 tšepe e sa jeleng paate, ho lokela ho sebelisoe tiiso ea lik'hemik'hale, 'me ho sebelisoe tekanyo e sa tobang.Haeba tube ea capillary e tletseng oli ea silicone e sebelisoa ho tataisa khatello, e ka thibela mochine o fetisang khatello hore o se ke oa bola le ho lelefatsa bophelo ba mochine oa khatello.

• Transmitter e hloka ho nepahala hakae:

Ho nepahala ho khethoa ke: ho se be le linearity, hysteresis, non-peatability, mocheso, zero offset scale, le mocheso.Ha ho nepahala ho phahame, theko e holimo.Ka kakaretso, ho nepahala ha "silicon pressure transmitter" e pharalletseng ke 0.5 kapa 0.25, 'me capacitive kapa monocrystalline silicon pressure transmitter e na le ho nepahala ha 0.1 kapa 0.075.

• Khokahano ea tšebetso ea transmitter:

Ka kakaretso, li-transmitters tsa khatello li kenngoa liphaepheng kapa litanka.Ha e le hantle, karolo e nyenyane ea tsona e kenngoa 'me e sebelisoa ka li-flow meters.Hangata ho na le mefuta e meraro ea ho kenya li-transmitters tsa khatello: khoele, flange le clamp.Ka hona, pele u khetha mochini o fetisang khatello, khokahano ea ts'ebetso le eona e tlameha ho nahanoa.Haeba e entsoe ka khoele, hoa hlokahala ho tseba hore na khoele e hlalosoa joang.Bakeng sa li-flanges, hoa hlokahala ho nahana ka litlhaloso tsa flange tsa bophara ba lebitso.

Kenyelletso ea indasteri e fetisang khatello

Linaha tse ka bang 40 ho pota lefatše li tšoarehile lipatlisisong le tlhahisong ea li-sensor, tseo United States, Japane le Jeremane e leng libaka tse nang le tlhahiso e kholo ka ho fetisisa ea li-sensor.Linaha tse tharo hammoho li ikarabella ho feta 50% ea 'maraka oa lefats'e oa li-sensor.

Matsatsing ana, 'maraka o fetisang khatello naheng ea heso ke mmaraka o seng o holile o nang le mebaraka e holimo.Leha ho le joalo, boemo bo ka sehloohong ke linaha tse tsoang linaheng tse ling tse emetsoeng ke Emerson, Yokogawa, Siemens, joalo-joalo. Lihlahisoa tsa lebitso la Brand li etsa karolo ea 70% ea karolo ea 'maraka' me li na le molemo o feletseng mererong ea boenjiniere e kholo le e mahareng.

Sena se bakoa ke sequelae ea naha ea heso e ileng ea amohela leano la pele la "maraka bakeng sa thekenoloji", e ileng ea otla likhoebo tsa naha ea heso haholo 'me e kile ea e-ba boemong ba ho hlōleha, empa ka nako e ts'oanang, bahlahisi ba bang ba ne ba emela. ke likhoebo tsa poraefete tsa China, ka khutso Ho hlaha le ho hola ka matla.Mmaraka oa China oa nakong e tlang o fetisang khatello o tletse lintho tse ncha tse sa tsejoeng.