Nernst N2032-O2/CO oxygen yopezeka ndi mpweya woyaka wagawo ziwiri

Ntchito zosiyanasiyana

Nernst N2032-O₂/ CO oxygen yokwanira komanso mpweya woyakaanalyzer ya zigawo ziwirindi analyzer yokwanira yomwe imatha kuzindikira nthawi imodzi yomwe ili ndi okosijeni, carbon monoxide ndi kuyaka bwino pakuyaka.Imatha kuyang'anitsitsa momwe mpweya wa okosijeni ndi carbon monoxide zili mu gasi wa flue panthawi kapena pambuyo pa kuyaka kwa ma boilers, ng'anjo, ndi ng'anjo.

Analyzer mnzake ndi Nernst O₂/ CO probe imatha kuyeza kuchuluka kwa okosijeni wa O₂% mu chitoliro ndi ng'anjo, mtengo wa PPM wa carbon monoxide CO, mtengo wa mpweya woyaka 12 komanso kuyaka bwino kwa ng'anjo yoyaka nthawi yeniyeni.

Makhalidwe a ntchito

Pambuyo kugwiritsa ntchito Nernst N2032-O₂/ CO oxygen yokwanira komanso mpweya woyakaanalyzer ya zigawo ziwiri, ogwiritsa ntchito amatha kusunga mphamvu zambiri ndikuwongolera mpweya wotulutsa mpweya.

Nernst N2032-O₂/ CO oxygen yokwanira komanso mpweya woyakaanalyzer ya zigawo ziwirindi luso lapadera lomwe limagwiritsa ntchito zirconia-mutu-mutu kapangidwe kamene kamapangidwa pambuyo pa zaka khumi za kafukufuku ndipo nthawi imodzi imatha kuyeza mpweya wa okosijeni ndi carbon monoxide.Pakalipano ndi teknoloji yoyezera mumzere weniweni. Mtengo wotsika, wolondola kwambiri, ukhoza kuyesedwa pa intaneti pansi pa chinyezi chambiri komanso fumbi lapamwamba.

Pakuwotcha kwa peroxygen, mpweya wamafuta ndi mpweya wothandizira kuyaka ukafika pamlingo wina wokhazikika, mpweya wa carbon monoxide udzasinthanso ndikusintha pang'ono kwa kuchuluka kwa mpweya. Mchitidwe wa carbon monoxide umapanganso zomwezo.

Nernst O₂/ CO probe kuyeza mfundo

Nernst O₂/ CO probe ili ndi maelekitirodi apawiri, omwe amatha kuzindikira chizindikiro cha okosijeni ndi chizindikiro choyaka nthawi imodzi. Chifukwa chosakwanira mpweya wa flue woyaka uli ndi carbon monoxide (CO), zoyaka ndi haidrojeni (H).₂).

Selo la okosijeni la probe ya zirconia kapena sensa ya okosijeni imagwiritsa ntchito mphamvu ya okosijeni yomwe imapangidwa ndi mitundu yosiyanasiyana ya okosijeni mkati ndi kunja kwa zirconia pa kutentha kwakukulu (kuposa 650 ° C) kuyeza kuchuluka kwa mpweya wa gawo loyezedwa. gawo la kafukufukuyo limapangidwa ndi chipolopolo chachitsulo chosapanga dzimbiri kapena chipolopolo chachitsulo cha aloyi, chomwe chimapangidwa ndi chotenthetsera chachitsulo cha aloyi, chubu cha zirconia, thermocouple, waya, bolodi lothawirako ndi bokosi, onani chithunzi chojambula. mkati ndi kunja kwa chubu cha zirconia kudzera pa chipangizo chosindikizira chofanana.

Pamene kutentha kwa zirconia probe mutu kufika 650 ° C kapena apamwamba kudzera chotenthetsera kapena kutentha kunja, osiyana mpweya woipa pa mkati ndi kunja mbali adzapanga lolingana electromotive mphamvu padziko zirconia.The mphamvu magetsi akhoza kuyeza. ndi waya wotsogolera wofananira, ndipo kutentha kwa gawolo kumatha kuyesedwa ndi thermocouple yofananira.

Pamene ndende ya okosijeni mkati ndi kunja kwa chubu ya zirconia imadziwika, mphamvu ya okosijeni yofananira imatha kuwerengedwa molingana ndi njira yowerengera ya zirconia.

Fomula yake ndi iyi:

E (millivolts) =4F(RT)chipikae 

Kumene E ndi mphamvu ya okosijeni, R ndiye mpweya wokhazikika, T ndiye kutentha kwathunthu, PO₂M'KATI mwake muli kupanikizika kwa mpweya mkati mwa chubu cha zirconia, ndi PO₂KUNJA ndi kupanikizika kwa mpweya wa okosijeni kunja kwa chubu cha zirconia. Malinga ndi ndondomekoyi, pamene mpweya wa okosijeni mkati ndi kunja kwa chubu la zirconia uli wosiyana, mphamvu yofananira ya okosijeni idzapangidwa. mpweya ndende mkati ndi kunja kwa chubu zirconia ndi chimodzimodzi, mphamvu mpweya ayenera kukhala 0 millivolt (mV).

Ngati kupanikizika kwa mumlengalenga ndi mlengalenga umodzi ndipo mpweya wa okosijeni mumlengalenga ndi 21%, ndondomekoyi ingakhale yosavuta kuti:

()

Pamene mphamvu ya okosijeni imayesedwa ndi chida choyezera ndipo mpweya wa okosijeni mkati kapena kunja kwa chubu la zirconia umadziwika, mpweya wa okosijeni wa gawo loyezera ukhoza kupezedwa motsatira ndondomeko yoyenera.

Njira yowerengera ili motere: (Panthawiyi, kutentha kwa gawo la zirconia kuyenera kukhala kwakukulu kuposa 650 ° C)

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

Khalidwe lopindika

Pamene mpweya woyezedwa uli ndi O₂ndi CO nthawi yomweyo, chifukwa cha kutentha kwakukulu kwa sensa ndi mphamvu yothandiza ya platinamu electrode dera la sensa, O.₂ndipo CO idzachitapo kanthu ndikufika pa chikhalidwe cha thermodynamic equilibrium, PO₂pa mbali yoyezedwa yasintha kotero kuti kupanikizika pang'ono kwa okosijeni pa mgwirizano ndi P'O₂.

Izi ndichifukwa choti sensor ikatsegulidwa kutentha kwambiri, njira ya O₂ndi CO kutengera kukhazikika ndikufanana ndi njira ya O₂kufalikira kwa ndende.Zomwe zimachitika zikafika pakufanana, kufalikira kwa O₂kukhazikika kumakondanso kukhazikika, kotero kuti kuyeza kwapang'onopang'ono kwa okosijeni pamlingo wofanana ndi P'O₂.

Zotsatira zotsatirazi zimachitika pagawo loyipa la ZrO₂batire:

1/2 O₂(PO₂)+CO→CO₂

Zomwe zimachitika zikafika pamlingo wofanana, O₂kusintha kwa ndende, PO₂imachepetsedwa kukhala P'O₂, ndi kutembenuka kwa mamolekyu a mpweya wa oxygen ndi O₂mu matrix ndi:

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

Elekitirodi yabwino:1/2 O₂(PO₂)+2e → O₂

Njira yosiyanitsira batri ndi:1/2 O₂ (PO₂) → 1/2 O₂(P'O₂)

Pamene mphamvu ya electromotive ya sensa imafananizidwa ndi kuchuluka kwa timadontho-timadontho ta mpweya wochepetsera makutidwe ndi okosijeni, piringupiriroyo ndi mawonekedwe opindika ofanana ndi mapindikidwe a titration.

Maonekedwe a khalidwe pamapindikira pansi ena kutentha, kuthamanga ndi otaya mlingo, kachipangizo chomwecho ali ndendende khalidwe pamapindikira kwa mtundu womwewo wa dongosolo mpweya.

Chifukwa chake, pansi pa kukakamizidwa kwa mumlengalenga ndi mpweya woyezedwa mukuyenda kwachilengedwe, kuyerekeza mphamvu yamagetsi ndi kuchuluka kwa timadontho ta O.₂-CO dongosolo la zirconia sensor ndi λ (λ=no2 /nco kapena kuchuluka kwa voliyumu λ=O₂ × V%/OCO × V %) mawonekedwe opindika.

Pamene Pt-Al₂O₃chothandizira chimapangidwa pa 600 ° C, CO mu aerobic system imatha kusinthidwa kukhala CO.₂, kotero kuti mpweya woyezedwa umakhala ndi okosijeni wokha pambuyo pa kuyaka kothandizira.

Panthawiyi, sensa ya zirconia imayesa kukwanira kwa okosijeni.Chifukwa cha ubale wa mpweya woyezedwa pansi pa kuyaka kothandizira, zomwe zili mu mpweya woyezedwa zimatha kuyezedwa. Ubale pakati pa zomwe zimachitika ndi kuchuluka kwake kusanachitike komanso pambuyo pa kuyaka kothandizira kwa mpweya woyezedwa ndi motere:

Tiyerekeze kuti kuchuluka kwa mpweya wa carbon monoxide mu mpweya woyezedwa usanachitike (CO), kuchuluka kwa okosijeni ndi A1, ndipo kuchuluka kwa mpweya mu mpweya woyezedwa pambuyo pa catalysis ndi A, ndiye:

Asanayambe kuyaka:(CO) A1

Pambuyo pa moto:O A

Kenako:A=A1 – (CO)/2

Ndipo:λ =A1/(CO)

Choncho:A = λ ×(CO)-(CO)/2

Zotsatira:(CO)= 2A /(2 la-1)    (＞0.5)

Mapangidwe a O₂/ CO fufuzani

The O₂/ CO probe yapanga kusintha kofananira pamaziko a kafukufuku wapachiyambi kuti azindikire ntchito yatsopano yowongolera kuyaka.Kuphatikiza pakupeza mpweya wa okosijeni panthawi yakuyaka, kafukufukuyu amathanso kuzindikira zoyaka zosakwanira (CO/H).₂), chifukwa carbon monoxide (CO) ndi haidrojeni (H₂) kukhala limodzi ndi mpweya wa flue wa kuyaka kosakwanira.

Kufufuza ndi chinthu chofunikira chomwe chimagwiritsa ntchito mfundo ya electrochemical pambuyo pa kutentha kwa zirconia kuti izindikire kuyeza kwake.

A. O₂electrode (platinamu)

B. COe elekitirodi (platinamu/chitsulo chamtengo wapatali)

C. Control elekitirodi (pulatinamu)

Chigawo chapakati cha kafukufuku ndi zirconia gulu pepala welded pa chubu corundum kupanga losindikizidwa chubu ndi poyera ndi chitoliro mpweya njira ya kuyaka dongosolo.Kugwiritsa ntchito maelekitirodi anamanga-mu angathe kuteteza dzimbiri zigawo kuwononga maelekitirodi ndi kuwonjezera moyo wautumiki.

Ntchito za COe electrode ndi O₂ma elekitirodi ndi ofanana, koma kusiyana pakati pa ma elekitirodi awiri ndi electrochemical ndi catalytic katundu wa zipangizo, kotero kuti zigawo kuyaka mu mpweya chitoliro monga CO ndi H.₂akhoza kudziwika ndi kuzindikiridwa.Pamene kuyaka kwathunthu, "Nernst" voltage UO₂imapangidwanso pa ma elekitirodi a COe, ndipo ma elekitirodi awiriwa ali ndi mawonekedwe omwewo.Mukazindikira zinthu zoyaka zosakwanira kapena zomwe zimatha kuyaka, magetsi osakhala a "Nernst" UCOe adzapangidwanso pa ma elekitirodi a COe, koma mapindikidwe a maelekitirodi awiriwa amasuntha mosiyana.

Mphamvu yamagetsi ya UCO/H₂Sensa yonse ndi chizindikiro chamagetsi choyesedwa ndi electrode ya COe.Chizindikirochi chili ndi zizindikiro ziwiri zotsatirazi:

UCO/H₂(sensa yonse) = UO₂(oxygen) + UCO₂/H₂(zigawo zoyaka)

Ngati mpweya wa okosijeni umayezedwa ndi O₂electrode imachotsedwa pa chizindikiro cha sensa yonse, mapeto ake ndi:

UCOe (gawo loyaka) = UCO/H₂(sensa yonse)-UO₂(oxygen)

The chilinganizo pamwamba angagwiritsidwe ntchito kuwerengera combustible chigawo COe kuyeza ppm. The kafukufuku sensa ndi mmene voteji chizindikiro characteristic.The graph imasonyeza mmene pamapindikira (mzere wokhotakhota) wa COe ndende pamene okhutira mpweya amachepetsa pang'onopang'ono.

Kuyaka kukalowa m'dera lopanda mpweya, pamalo otchedwa "emission m'mphepete", pamene mpweya wosakwanira umayambitsa kuyaka kosakwanira, ndende yofananira ya COe idzawonjezeka kwambiri.

Mawonekedwe a siginecha omwe apezedwa akuwonetsedwa mu chithunzi cha probe curve.

UO₂(mzere wopitilira) ndi UCO/H₂(mzere wamadontho).

Mpweya ukakhala wochuluka ndipo kuyaka kulibe zigawo za COe, chizindikiro cha UO₂ndi UCO/H₂ndizofanana, ndipo malinga ndi mfundo ya "Nernst", zomwe zili mu mpweya wa mpweya wa flue gas zimawonetsedwa.

Mukayandikira "m'mphepete mwa kutulutsa", chizindikiro chonse cha sensor voltage UCO/H₂ma elekitirodi a COe amachulukirachulukira kwambiri chifukwa cha ma siginoloji owonjezera omwe si a Nernst COe.₂ndi UCO/H₂zokhudzana ndi momwe mpweya uliri mu njira ya gasi wa flue, mawonekedwe a gawo loyaka moto la COe akuwonetsedwanso pano.

Kuphatikiza pa ma voliyumu amagetsi a masensa a UCO/H₂ndi uo₂, masensa omwe ali ndi mphamvu zowoneka bwino za dU O₂/dt ndi dUCO/H₂/dt makamaka kusinthasintha kwa ma siginecha a COe electrode angagwiritsidwe ntchito kutseka "m'mphepete mwa mpweya" wakuyaka.

(Onani "Kuyaka kosakwanira: kusinthasintha kwamagetsi kwa COe elekitirodi UCO/H₂“)

Makhalidwe aukadaulo

•Ntchito zolowetsa zapawiri: Analyzer imodzi imatha kukhala ndi ma probe awiri, omwe amatha kupulumutsa mtengo wogwiritsa ntchito ndikuwongolera kudalirika kwa kuyeza.

•Ntchito zambiri zotulutsa: Analyzer ali ndi ma 4-20mA awiri aposachedwa a siginecha ndi mawonekedwe apakompyuta pakompyuta RS232 kapena netiweki RS485.Njira imodzi yotulutsa siginecha ya okosijeni, njira ina yotulutsa ma siginolo a CO.

•Muyeso woyezera: Muyezo wa oxygen ndi 10^-30mpaka 100% ya okosijeni, ndipo muyeso wa carbon monoxide ndi 0-2000PPM.

•Kuyika ma alarm:The analyzer ili ndi 1 alamu yotulutsa ndi ma alarm 3 osinthika.

• Kuwongolera zokha:Wosanthula amangoyang'anira machitidwe osiyanasiyana ogwiritsira ntchito ndikuwongolera kuti atsimikizire kulondola kwa analyzer pakuyezera.

•Dongosolo lanzeru:Analyzer amatha kumaliza ntchito zamitundu yosiyanasiyana malinga ndi zoikidwiratu.

•Onetsani ntchito yotulutsa:Analyzer ali ndi ntchito yolimba yowonetsera magawo osiyanasiyana ndi kutulutsa kwamphamvu ndi ntchito yolamulira ya magawo osiyanasiyana.

•Chitetezo ntchito:Pamene ng'anjo si ntchito, wosuta akhoza kulamulira kuzimitsa chotenthetsera kafukufuku kuonetsetsa chitetezo pa ntchito.

•Kuyika ndi kosavuta komanso kosavuta:kuyika kwa analyzer ndikosavuta kwambiri ndipo pali chingwe chapadera cholumikizira ndi kafukufuku wa zirconia.

Zofotokozera

Zolowetsa

• Pulojekiti imodzi kapena ziwiri za zirconia kapena zirconia probe + CO sensor

• Mtundu wa thermometer wa flue kapena wopatula K, R, J, S

• Pressure gas purge sign input

• Kusankha mafuta awiri osiyana

• Chitetezo choteteza chitetezo kuti chisaphulike (chimagwira ntchito pa kafukufuku wotenthetsera)

Zotsatira

Awiri liniya 4～20mA DC chizindikiro linanena bungwe (kuchuluka katundu 1000Ω)

• Mtundu woyamba wotulutsa (posankha)

Linear kutulutsa 0～1% mpaka 0 ~ 100% okosijeni

Kutulutsa kwa Logarithmic 0.1 - 20% ya okosijeni

Kutulutsa kwa Micro oxygen 10^-39ku 10^-1mpweya wa oxygen

• Gawo lachiwiri lotulutsa (litha kusankhidwa kuchokera ku zotsatirazi)

Mtengo wa carbon monoxide (CO) PPM

Mpweya wa carbon dioxide (CO₂)%

Kuyeza kwa gasi woyaka PPM mtengo

Kuyaka bwino

Mtengo wa oxygen

Mtengo woyaka wa Anoxic

Kutentha kwa chimfine

Sekondale Parameter Kuwonetsa

• Mpweya wa carbon monoxide (CO) PPM

• Kuwotcha kwa gasi woyaka bwino

• Kufufuza linanena bungwe voteji

• Kutentha kwa probe

• Kutentha kozungulira

• Tsiku la mwezi wa chaka

• Chinyezi cha chilengedwe

• Kutentha kwa chimfine

• Fufuzani za impedance

• Mlozera wa Hypoxia

• Ntchito ndi kukonza nthawi

Kulankhulana pakompyuta/printer

The analyzer ili ndi RS232 kapena RS485 seriout port port, yomwe imatha kulumikizidwa mwachindunji ku terminal ya kompyuta kapena chosindikizira, ndipo kafukufuku ndi chida zitha kupezeka kudzera pakompyuta.

Kuyeretsa fumbi ndi kuwongolera gasi wamba

Chowunikiracho chili ndi 1 njira yochotsera fumbi ndi 1 njira yoyezera gasi wamba kapena mayendedwe a 2 amagetsi otulutsa mpweya, ndi chosinthira chamagetsi cha solenoid chomwe chimatha kuyendetsedwa kapena pamanja.

KulondolaP

± 1% ya kuwerenga kwenikweni kwa okosijeni ndi kubwereza kwa 0.5%.Mwachitsanzo, pa 2% oxygen yolondola ingakhale ± 0.02% oxygen.

Ma alarmP

Analyzer ili ndi ma alarm 4 omwe ali ndi ntchito zosiyanasiyana 14, ndi ma alarm 3 osinthika.Itha kugwiritsidwa ntchito pazizindikiro zochenjeza monga kuchuluka komanso kutsika kwa okosijeni, kutsika komanso kutsika kwa CO, ndi zolakwika za kafukufuku ndi zolakwika zoyezera.

Mawonekedwe osiyanasiyanaP

Onetsani zokha 10^-30～100% O2 zili ndi okosijeni ndi 0ppm ~ 2000ppm CO carbon monoxide zomwe zili.

Reference gasiP

Kupereka mpweya ndi pampu ya micro-motor vibration.

Zosintha za Power

85VAC mpaka 264VAC 3A

Kutentha kwa Ntchito

Kutentha kwa ntchito -25 ° C mpaka 55 ° C

Chinyezi Chachibale 5% mpaka 95% (chosasunthika)

Mlingo wa Chitetezo

IP65

IP54 yokhala ndi pampu yamkati yamkati

Makulidwe ndi Kulemera kwake

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