Nernst N2032-O2/CO okisijeni yemukati uye gasi rinopisa rinopisa-zvikamu zviviri analyzer

Application range

Iyo Nernst N2032-O₂/ CO okisijeni yemukati uye gasi rinopisamaviri-chikamu analyzerndeye analyzer yakazara iyo inogona kuona panguva imwe chete okisijeni yemukati, kabhoni monoxide uye kugona kupisa mukupisa. Inogona kutarisa iyo okisijeni yemukati uye kabhoni monoxide zvirimo mune flue gasi panguva kana mushure mekupisa kwema boilers, mavira, uye kilns.

Iyo analyzer shamwari naNernst O₂/ CO probe inogona kuyera iyo oxygen yemukati muzana muzana O₂%.

Maitiro ekushandisa

Mushure mekushandisa Nernst N2032-O₂/ CO okisijeni yemukati uye gasi rinopisamaviri-chikamu analyzer, vashandisi vanogona kuchengetedza simba rakawanda uye kudzora kupera kwegasi kubuda.

Iyo Nernst N2032-O₂/ CO okisijeni yemukati uye gasi rinopisamaviri-chikamu analyzerndiyo yakasarudzika tekinoroji inoshandisa zirconia mbiri-musoro chimiro chakagadzirwa mushure memakore gumi ekutsvaga uye inogona panguva imwe chete kuyera okisijeni yemukati uye kabhoni monoxide zvirimo. Ikozvino ichokwadi in-line yekuyera tekinoroji.Mutengo wakaderera, wakanyanya kururamisa, unogona kuyerwa online pasi pehunyoro hwakasiyana-siyana uye guruva rakakwirira.

Mukupisa kweperoxygen, kana gasi remafuta uye iyo inopisa-inotsigira okisijeni inosvika kune imwe dynamic equilibrium point, iyo carbon monoxide content ichachinjawo nekuchinja kudiki kwehuwandu hweokisijeni.Kuchinja kwemaitiro eokisijeni uye shanduko. maitiro ecarbon monoxide anoumba imwechete yakasimudzwa maitiro.

Nernst O₂/ CO probe yekuyera musimboti

Iye Nernst O₂/ CO probe ine maelectrodes maviri, anogona kuona zvose zviratidzo zveokisijeni uye chiratidzo chinopisa panguva imwe chete.Nekuti isina kukwana combustion flue gas ine carbon monoxide (CO), zvinopisa uye hydrogen (H₂).

Oxygen cell ye zirconia probe kana oxygen sensor inoshandisa simba reoxygen rinogadzirwa neokisijeni yakasiyana-siyana mukati nekunze kwe zirconia pakupisa kwepamusoro (kupfuura 650 ° C) kuyera okisijeni yechikamu chakayerwa.Kunze chikamu cheprobe chakagadzirwa nesimbi isina tsvina shell kana alloy simbi shell, iyo inoumbwa nealloy steel heater, zirconia tube, thermocouple, waya, terminal board uye bhokisi, ona dhiyabhorosi dhiyagiramu.I zirconia chubhu ye probe yakavharirwa gasi kubva mukati nekunze kwe zirconia chubhu kuburikidza nechisimbiso chinoenderana.

Kana tembiricha ye zirconia probe musoro inosvika 650°C kana kupfuura kuburikidza nehita kana tembiricha yekunze, kuwanda kweokisijeni kwakasiyana mukati nekunze kwemativi kunoburitsa simba rinoenderana nemagetsi pamusoro pe zirconia.Kugona kwemagetsi kunogona kuyerwa. netambo inotungamira inoenderana, uye kukosha kwekushisa kwechikamu kunogona kuyerwa neinofanana thermocouple.

Kana iyo oxygen yekuisa mukati nekunze kwe zirconia chubhu ichizivikanwa, iyo inoenderana neokisijeni inogoneka inogona kuverengerwa zvinoenderana ne zirconia inogona calculation formula.

Iyo formula ndeyotevera:

E (millivolts) =4F(RT)loge 

Iko E ndiko kugona kweokisijeni, R ndiyo gasi risingaperi, T ndiyo yakakwana yekushisa kukosha, PO₂MUKATI ndiko kumanikidzwa kukosha kweokisijeni mukati mezirconia chubhu, uye PO₂KUNZE ndiko kudzvinyirira kukosha kweokisijeni kunze kwe zirconia tube.Maererano nemaitiro, apo iyo oxygen concentration mukati uye kunze kwe zirconia chubhu yakasiyana, inoenderana neokisijeni inogoneka ichagadzirwa.Inogona kuzivikanwa kubva kuhuwandu hwekuverenga kuti kana oxygen concentration mukati nekunze kwe zirconia chubhu yakafanana, simba reokisijeni rinofanira kuva 0 millivolt (mV).

Kana iyo yakajairwa mhepo yemuchadenga iri mhepo imwe chete uye huwandu hweokisijeni mumhepo huri 21%, fomula yacho inogona kurerutswa ku:

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Kana simba reokisijeni richiyerwa nemudziyo wekuyeresa uye kugadzika kweokisijeni mukati kana kunze kwechubhu ye zirconia kunozivikanwa, huwandu hweokisijeni hwechikamu chakayerwa hunogona kuwanikwa maererano neforoma inowirirana.

Iyo yekuverenga fomula ndeiyi inotevera: (Panguva ino, tembiricha iri mu zirconia chikamu chinofanira kunge chakakura kupfuura 650 ° C)

(%O₂) KUNZE (ATM) = 0.21 EXPT(-46.421E)

Characteristic curve

Kana gasi rakayerwa riine O₂uye CO panguva imwe chete, nekuda kwekushisa kwakanyanya kwe sensor uye catalytic mhedzisiro yeplatinamu electrode nzvimbo ye sensor, O.₂uye CO ichaita uye inosvika kune thermodynamic equilibrium state, iyo PO₂kudivi rakapimwa rachinja zvekuti mweya weokisijeni chidimbu pakuenzana iP'O₂.

Izvi zvinodaro nekuti mushure mekunge sensor yaitwa pakupisa kwakanyanya, maitiro eO₂uye CO maitiro anotarisa kuenzanirana anofanana nemaitiro eO₂kupararira kweconcentration. Kana maitiro asvika pakuenzana, kupararira kweO₂kuisa pfungwa kunowanzoita kudzikamisa, zvekuti kuyerwa kweokisijeni chikamu chekumanikidza pakuenzana iP'O₂.

Izvi zvinotevera zvinoitika munzvimbo isina kunaka yeZrO₂bhatiri:

1/2 O₂(PO₂)+CO→CO₂

Kana maitiro asvika pakuenzana, iyo O₂kuchinja kwehutano, PO₂yakaderedzwa kusvika P'O₂, uye kushandurwa kwegasi okisijeni mamorekuru uye O₂mu matrix ndeiyi:

Negative electrode:O₂ → 1/2 O₂(P'O₂)+2e

Positive electrode:1/2 O₂(PO₂)+2e → O₂

Iyo bhatiri yekumisikidza musiyano maitiro ndeye:1/2 O₂ (PO₂) → 1/2 O₂(P'O₂)

Kana simba re electromotive re sensor richifananidzwa nehuwandu hwema moles e-oxidation-reduction gasi, curve iine maitiro akafanana netitration curve.

Chimiro cheiyi hunhu curve pasi peimwe tembiricha, kudzvanywa uye kuyerera mwero, iyo imwe sensor ine chaiyo yakafanana hunhu curve yemhando imwechete yegasi system.

Naizvozvo, pasi pekumanikidzwa kwemuchadenga uye gasi rakayerwa mukuyerera kwechisikigo, kuenzanisa kwesimba re electromotive uye nhamba yemamoles eO.₂-CO system ne zirconia sensor ndeye λ (λ = no2 /nco kana vhoriyamu muzana λ=O₂ × V%/OCO × V %) hunhu curve.

Apo iyo Pt-Al₂O₃catalyst inogadziriswa pa600 ° C, iyo CO mu aerobic system inogona kushandurwa zvachose kuCO.₂, saka gasi rakapimwa rinongova neokisijeni mushure mekupisa kwecatalytic.

Panguva ino, zirconia sensor inoyera iyo chaiyo oksijeni yemukati. Nekuda kwehukama hwegasi rakapimwa pasi pechiito chekupisa kwecatalytic, iyo CO irimo mugasi yakayerwa inogona kuyerwa. Hukama huripo pakati peiyo reaction formula uye huwandu husati hwavapo uye mushure mecatalytic kupisa kwegasi yakayerwa ndeiyi:

Ngatitii kuwanda kwekabhoni monoxide mugasi yakayerwa isati yaitwa catalysis iri (CO), kuwanda kweokisijeni iA1, uye kuwanda kweokisijeni mugasi rakayerwa mushure mecatalysis ndiA, zvino:

Usati wapisa:(CO) A1

Mushure mekupisa:O A

Zvino:A=A1 – (CO)/2

uye:λ =A1 /(CO)

Saka:A=λ ×(CO)-(CO)/2

Mhedzisiro:(CO)= 2A /(2λ-1)    (λ＞0.5)

Chimiro chechimiro cheO₂/CO probe

Iye O₂/ CO probe yakaita shanduko dzinoenderana pahwaro hwekuferefeta kwekutanga kuona iyo nyowani yekudzora kupisa basa.Kuwedzera pakuona iyo okisijeni yemukati panguva yekupisa, probe inogona zvakare kuona isina kukwana inopisa (CO/H).₂), nekuti kabhoni monoxide (CO) uye hydrogen (H₂) kugara muflue gasi rekupisa kusina kukwana.

Iyo probe ndicho chinhu chakakosha chinoshandisa iyo electrochemical musimboti mushure mekudziya kwe zirconia kuona kuyerwa.

A. O₂electrode (platinamu)

B. COe electrode (platinamu / simbi inokosha)

C. Kudzora electrode (platinum)

Chinhu chakakosha cheprobe ndeye zirconia composite sheet yakasungirirwa pachubhu ye corundum kuti iite chubhu yakavharwa uye yakavhenekerwa kune flue gasi chiteshi chemagetsi ekupisa.Kushandiswa kwemagetsi akavakirwa-mukati anogona kudzivirira zvinobudirira zvikamu zvekuora kubva mukukuvadza magetsi uye kuwedzera hupenyu hwebasa.

Mabasa eCOe electrode uye O₂ma electrode akafanana, asi mutsauko uripo pakati pemaelectrode maviri ielectrochemical and catalytic properties of the raw materials, kuitira kuti zvinhu zvinopisa zvinobvira muflue gasi seCO neH.₂inogona kuzivikanwa uye kuonekwa.Mumamiriro ekupisa zvachose, "Nernst" voltage UO₂inoumbwawo paCOe electrode, uye maelectrode maviri aya ane akafanana curve maitiro. Pakuona kutsva kusina kukwana kana zvinhu zvinobvira, magetsi asiri e”Nernst” UCOe anozogadzirwawo paCOe electrode, asi macurves emagetsi maviri anofamba zvakasiyana.

Iyo voltage chiratidzo UCO/H₂ye sensor yese ndiyo chiratidzo chevoltage inoyerwa neCOe electrode. Ichi chiratidzo chinosanganisira zviratidzo zviviri zvinotevera:

UCO/H₂(sensonzi yese) = UO₂(okisijeni yemukati) + UCO₂/H₂(Zvinhu zvinopisa)

Kana iyo okisijeni yemukati yakayerwa neO₂electrode inobviswa kubva pachiratidzo cheiyo yese sensor, mhedziso ndeiyi:

UCOe (chikamu chinopisa) = UCO/H₂(sensor yese)-UO₂(oxygen content)

Iyo fomula iri pamusoro inogona kushandiswa kuverenga iyo inobvira chikamu COe yakayerwa mu ppm. Iyo probe sensor ndeye yakajairika voltage chiratidzo chehunhu. Iyo girafu inoratidza yakajairika curve (dashed line) yeCOe concentration kana okisijeni yemukati inoderera zvishoma nezvishoma.

Kana kupisa kunopinda munzvimbo isina mweya, pane iyo inonzi "emission edge" point, kana mweya usina kukwana unokonzera kupisa kusina kukwana, iyo inowirirana COe concentration ichawedzera zvakanyanya.

Iwo akawanikwa masaini maitiro anoratidzwa mu probe curve diagram.

UO₂(mutsetse unoenderera) uye UCO/H₂(mutsetse une doti).

Kana mweya uchinge wawedzera uye kupisa kwacho kusina zvachose kweCOe zvikamu, iyo sensor chiratidzo UO.₂uye UCO/H₂zvakafanana, uye maererano ne "Nernst" musimboti, ikozvino okisijeni yemukati ye flue gasi chiteshi inoratidzwa.

Kana uchisvika "kumucheto wekuburitsa", iyo yakazara sensor voltage chiratidzo UCO/H₂yeCOe electrode inowedzera pamwero usingaenzaniswi nekuda kwekuwedzera kusiri kweNernst COe chiratidzo.Nezve voltage chiratidzo maitiro e sensor: UO₂uye UCO/H₂maererano neokisijeni yemukati mune flue gasi chiteshi, maitiro akajairwa echikamu chinopisa COe anoratidzwawo pano.

Pamusoro pemagetsi masaini ema sensors UCO/H₂uye uo₂, iyo ine simba ine simba sensor masaini dU O₂/dt uye dUCO/H₂/dt uye kunyanya iyo fluctuation chiratidzo renji yeCOe electrode inogona kushandiswa kuvhara iyo "emission edge" yekupisa.

(Ona "Kupisa kusina kukwana: iyo voltage fluctuation range yeCOe electrode UCO/H₂“)

Unyanzvi hunoita

•Dual probe input function: Imwe analyzer inogona kuve yakashongedzerwa nemaprobes maviri, ayo anogona kuchengetedza mutengo wekushandisa uye kugadzirisa kuyerwa kwekuvimbika.

•Multiple output function: Iyo analyzer ine maviri 4-20mA ikozvino chiratidzo chekubuda uye komputa-kombuta yekukurukurirana interface RS232 kana network interface RS485. Imwe nzira yekubuda kweokisijeni chiratidzo, imwe chiteshi cheCO chiratidzo chinobuda.

•Chiyero chiyero: Okisijeni kuyerwa kwemhando yegumi^-30kusvika ku100% okisijeni yemukati, uye iyo kabhoni monoxide kuyerwa renji ndeye 0-2000PPM.

•Alarm setting:Iyo analyzer ine 1 general alarm kubuda uye 3 programmable alarm inobuda.

• Automatic calibration:Iyo analyzer inongo tarisa akasiyana masisitimu anoshanda uye otomatiki kugadzirisa kuti ive nechokwadi cheiyo analyzer panguva yekuyera.

•Intelligent system:Iyo analyzer inogona kupedzisa mabasa eakasiyana marongero zvinoenderana neakafanotemerwa marongero.

•Ratidza basa rinobuda:Iyo analyzer ine basa rakasimba rekuratidza ma parameter akasiyana-siyana uye kuburitsa kwakasimba uye kutonga basa remhando dzakasiyana.

•Basa rekuchengetedza:Kana choto chisisashandiswe, mushandisi anogona kudzora kudzima hita yeprobe kuti ave nechokwadi chekuchengetedza panguva yekushandisa.

•Installation iri nyore uye iri nyore:kuiswa kweanalyzer kuri nyore uye kune tambo yakakosha yekubatanidza ne zirconia probe.

Zvinotsanangurwa

Inputs

• Imwe kana maviri zirconia probes kana imwe zirconia probe + CO sensor

• Flue kana spare thermometer mhando K, R, J, S mhando

• Pressure gas purge sign input

• Kusarudzwa kwemafuta maviri akasiyana

• Kuputika-kudzivirira kushanda kwakachengeteka (kunoshanda chete kune inopisa probe)

Outputs

Maviri mutsara 4～20mA DC chiratidzo chinobuda (yakanyanya kuremerwa 1000Ω)

• Yekutanga kubuda siyana (optional)

Linear kubuda 0～1% kusvika 0～100% okisijeni yemukati

Logarithmic yakabuda 0.1 ~ 20% okisijeni yemukati

Micro-oxygen kubuda 10^-39ku10^-1okisijeni yezvinhu

• Yechipiri yekubuda siyana (inogona kusarudzwa kubva pane zvinotevera)

Carbon monoxide content (CO) PPM kukosha

Carbon dioxide (CO₂)%

Inopisa gasi kuyerwa kwePPM kukosha

Kupisa kushanda zvakanaka

Log oxygen kukosha

Anoxic combustion value

Flue tembiricha

Secondary Parameter Display

• Carbon monoxide carbon (CO) PPM

• Gasi rinopisa rinopisa zvakanaka

• Probe output voltage

• Kupisa kweprobe

• Ambient tembiricha

• Zuva remwedzi wegore

• Kunyorova kwenzvimbo

• Flue tembiricha

• Ongorora impedance

• Hypoxia index

• Kushanda nekugadzirisa nguva

Komputa/printer kutaurirana

Iyo analyzer ine RS232 kana RS485 serial yekubuda port, iyo inogona kubatanidzwa zvakananga kune komputa terminal kana printer, uye probe uye chiridzwa chinogona kuongororwa kuburikidza nekombuta.

Kuchenesa guruva uye chiyero chegasi calibration

Iyo analyzer ine 1 chiteshi chekubvisa guruva uye 1 chiteshi cheyakajairwa gasi calibration kana 2 chiteshi cheyakajairwa gasi calibration inobuda relays, uye solenoid valve switch iyo inogona kushanda yega kana nemaoko.

KururamaP

± 1% yekuverenga chaiko kweokisijeni nekudzokorora kwe0.5%. Semuenzaniso, pa 2% okisijeni kurongeka kwaizove ± 0.02% oksijeni.

AlarmsP

Iyo analyzer ine 4 general maalarm ane gumi nemana akasiyana mabasa, uye matatu anorongeka maaramu. Inogona kushandiswa kune zviratidzo zvekunyevera zvakadai sepamusoro uye pasi peokisijeni yemukati, yakakwirira uye yakaderera CO, uye zvikanganiso zvekuongorora uye zvikanganiso zvekuyera.

Display rangeP

Ratidza otomatiki 10^-30～100% O2 yemukati yeokisijeni uye 0ppm～2000ppm CO kabhoni monoxide zviri mukati.

Reference gasiP

Mhepo inopihwa nemicro-motor vibration pump.

Power Ruireqements

85VAC kusvika 264VAC 3A

Operating Temperature

Kushanda Tembiricha -25°C kusvika 55°C

Relative Humidity 5% kusvika 95% (isina-condensing)

Dhigirii rekudzivirira

IP65

IP54 ine yemukati referensi pombi yemhepo

Dimensions uye Weight

300mm W x 180mm H x 100mm D 3kg