Nernst N2032-O2/CO ikuku oxygen na ihe nyocha ihe mejupụtara gas abụọ.

Oke ngwa

Nernst N2032-O₂/CO ọdịnaya oxygen na ọkụ ọkụihe nyocha nke akụkụ abụọbụ ihe nyocha zuru oke nke nwere ike ịchọpụta ọdịnaya oxygen n'otu oge, carbon monoxide na arụmọrụ combustion na usoro combustion. Ọ nwere ike nyochaa ọdịnaya oxygen na carbon monoxide dị n'ime ikuku flue n'oge ma ọ bụ mgbe a gbachara ọkụ ọkụ, ọkụ, na kilns.

Onye nyocha ya na Nernst O₂/CO nyocha nwere ike tụọ ọdịnaya oxygen pasent O₂% na flue na ọkụ, PPM uru nke carbon monoxide CO, uru nke 12 combustible gas na combustion arụmọrụ nke combustion ọkụ na ozugbo.

Njirimara ngwa

Mgbe iji Nernst N2032-O₂/CO ọdịnaya oxygen na ọkụ ọkụihe nyocha nke akụkụ abụọ, ndị ọrụ nwere ike ịchekwa ike dị ukwuu ma na-achịkwa ikuku ikuku gas.

Nernst N2032-O₂/CO ọdịnaya oxygen na ọkụ ọkụihe nyocha nke akụkụ abụọbụ nkà na ụzụ pụrụ iche nke na-eji zirconia nhazi isi abụọ emepụtara ka afọ iri nyochachara ma nwee ike tụọ ọdịnaya oxygen na carbon monoxide n'otu oge. Ọ bụ ugbu a a eziokwu in-line nha technology. Low ọnụ ala, elu izi ezi, nwere ike tụrụ online n'okpuru dị iche iche elu iru mmiri na elu uzuzu ọnọdụ.

N'ime usoro ikpo ọkụ nke peroxygen, mgbe mmanụ ọkụ gas na ikuku oxygen na-akwado combustion rutere n'otu ebe nhata dị ike, ọdịnaya carbon monoxide ga-agbanwekwa na obere mgbanwe nke ikuku oxygen. Mgbanwe mgbanwe nke ikuku oxygen na mgbanwe mgbanwe. usoro nke carbon monoxide na-etolite otu ihe na-eme n'elu.

Nernst O₂/CO nyocha ụkpụrụ ụkpụrụ

Nernst O₂/ CO nyocha nwere ihe abụọ electrodes, nke nwere ike ịchọpụta ma ikuku oxygen na mgbama ọkụ n'otu oge. N'ihi na ezughị ezu combustion flue gas nwere carbon monoxide (CO), combustibles na hydrogen (H).₂).

Igwe ikuku oxygen nke nyocha zirconia ma ọ bụ ihe mmetụta oxygen na-eji ike oxygen na-emepụta site na ikuku oxygen dị iche iche dị n'ime na n'èzí zirconia na okpomọkụ dị elu (karịa 650 ° C) iji tụọ ikuku oxygen nke akụkụ ahụ tụrụ. akụkụ nke nyocha ahụ bụ shei igwe anaghị agba nchara ma ọ bụ shei alloy, nke mejupụtara igwe na-ekpo ọkụ nchara, tube zirconia, thermocouple, waya, bọọdụ ọnụ na igbe, lee eserese schematic. The zirconia tube nke nyocha bụ gas mkpuchi si n'ime na n'èzí nke zirconia tube site a kwekọrọ ekwekọ ngwaọrụ.

Mgbe okpomọkụ nke isi nyocha nke zirconia ruru 650 ° C ma ọ bụ karịa site na ọkụ ọkụ ma ọ bụ okpomọkụ dị n'èzí, ikuku oxygen dị iche iche n'ime ime na n'èzí ga-emepụta ike electromotive kwekọrọ n'elu zirconia. Enwere ike tụọ ike eletrik. site na waya ndu kwekọrọ, na ọnụahịa okpomọkụ nke akụkụ ahụ nwere ike tụọ ya site na thermocouple kwekọrọ.

Mgbe amara oxygen n'ime na n'èzí tube zirconia, enwere ike gbakọọ ikike oxygen kwekọrọ dịka usoro ngụkọ nke zirconia siri dị.

Usoro a bụ nke a:

E (millivolts) =4F(RT)ndekọe 

Ebe E bụ ikuku oxygen, R bụ gas na-adịgide adịgide, T bụ uru okpomọkụ zuru oke, PO₂N'INYE bụ uru nrụgide nke oxygen n'ime tube zirconia, na PO₂N'èzí bụ uru nrụgide nke ikuku oxygen n'èzí zirconia tube. Dị ka usoro ahụ si dị, mgbe ikuku oxygen dị n'ime na n'èzí zirconia tube dị iche, a ga-emepụta ikike ikuku oxygen kwekọrọ. Ntụle oxygen n'ime na n'èzí tube zirconia bụ otu, ike ikuku kwesịrị ịbụ 0 millivolt (mV).

Ọ bụrụ na ọkọlọtọ ikuku ikuku bụ otu ikuku na ikuku oxygen na ikuku bụ 21%, enwere ike ime ka usoro ahụ dị mfe:

()

Mgbe a na-eji ngwá ọrụ tụọ ike ikuku oxygen na ikuku oxygen dị n'ime ma ọ bụ n'èzí tube zirconia, enwere ike ịnweta ikuku oxygen nke akụkụ ahụ a tụrụ dịka usoro kwekọrọ.

Usoro mgbako bụ nke a: (N'oge a, okpomọkụ dị na akụkụ zirconia ga-adịrịrị karịa 650 ° C).

(%O₂) Mpụga (ATM) = 0.21 EXPT(-46,421E)

Usoro njirimara

Mgbe gas a tụrụ atụ nwere O₂na CO n'otu oge ahụ, n'ihi oke okpomọkụ nke ihe mmetụta na mmetụta catalytic nke mpaghara platinum electrode nke ihe mmetụta, O.₂na CO ga-emeghachi omume wee rute ọnọdụ nha nhata ọkụ, PO₂n'akụkụ atụtara agbanweela nke mere na ikuku oxygen na-arụ ọrụ na nha nha bụ P'O₂.

Nke a bụ n'ihi na mgbe arụnyere ihe mmetụta na oke okpomọkụ, usoro nke O₂na mmeghachi omume CO nke na-achọ itule na usoro nke O₂mgbasa uche. Mgbe mmeghachi omume ahụ ruru nha nha, mgbasa nke O₂Ntinye uche na-emekwa ka ọ kwụsie ike, nke mere na nrụgide akụkụ ikuku oxygen tụrụ na nha nha bụ P'O₂.

Mmeghachi omume ndị a na-eme na mpaghara ọjọọ nke ZrO₂batrị:

1/2 O₂(PO₂)+CO → CO₂

Mgbe mmeghachi omume ahụ ruru nha nha, O₂mgbanwe ntinye uche, PO₂na-ebelata ka P'O₂, na ntughari nke gaseous oxygen molecules na O₂na matrix bụ:

Eletrọd adịghị mma:O₂ → 1/2 O₂(P'O₂)+2e

Eletrọd dị mma:1/2 O₂(PO₂)+2e → O₂

Usoro dị iche iche itinye uche batrị bụ:1/2 O₂ (PO₂) → 1/2 O₂(P'O₂)

Mgbe atụnyere ike electromotive nke ihe mmetụta na ọnụ ọgụgụ nke mole nke oxidation-reduction gas, mgbanaka ahụ bụ usoro njiri mara nke yiri usoro titration.

Ọdịdị nke njirimara njirimara a n'okpuru ụfọdụ okpomọkụ, nrụgide na ọnụego na-asọpụta, otu ihe mmetụta ahụ nwere kpọmkwem otu njirimara njirimara maka otu ụdị gas usoro.

Ya mere, n'okpuru nrụgide ikuku na gas a tụrụ na mmiri na-asọpụta, atụnyere ike electromotive na ọnụ ọgụgụ nke mole nke O.₂-CO sistemụ site na ihe mmetụta zirconia bụ λ (λ=no2 / nco ma ọ bụ pasent olu λ=O₂ × V %/OCO × V %) okirikiri njirimara.

Mgbe Pt-Al₂O₃A na-eme ka onye na-emepụta ihe na 600 Celsius C, CO na usoro ikuku ikuku nwere ike gbanwee kpamkpam na CO.₂Ya mere, gas a tụrụ atụ nwere naanị oxygen mgbe ọkụ ọkụ gachara.

N'oge a, ihe mmetụta zirconia na-atụle ọdịnaya oxygen ziri ezi. N'ihi njikọ nke gas a tụrụ atụ n'okpuru ọrụ nke combustion catalytic, enwere ike ịlele ọdịnaya CO dị na gas a tụrụ.

Ka e were ya na ntinye nke carbon monoxide na gas a tụrụ atụ tupu catalysis bụ (CO), mkpokọta oxygen bụ A1, yana ntinye oxygen na gas a tụrụ atụ mgbe catalysis bụ A, mgbe ahụ:

Tupu ọkụ:(CO) A1

Mgbe ọkụ:O A

Mgbe ahụ:A=A1 – (CO)/2

Na:λ = A1 / (CO)

Ya mere:A=λ ×(CO)-(CO)/2

Nsonaazụ:(CO)= 2A /(2λ-1)    (Nke 0.5)

Ụkpụrụ nhazi nke O₂/ CO nyocha

Ihe O₂/ CO nyocha emewo mgbanwe kwekọrọ na ndabere nke nyocha mbụ iji ghọta ọrụ nchịkwa ọkụ ọkụ ọhụrụ. Na mgbakwunye na ịchọta ikuku oxygen n'oge usoro ọkụ ọkụ, nyocha ahụ nwekwara ike ịchọpụta combusible combusted na-ezughị ezu (CO / H).₂N'ihi na carbon monoxide (CO) na hydrogen (H₂) na-ebikọ ọnụ na flue gas nke combustion na-ezughị ezu.

Nyocha bụ isi ihe na-eji ụkpụrụ electrochemical mgbe kpo oku zirconia iji ghọta nha.

A. O₂electrode (platinum)

B. COe electrode (platinum/ọla dị oké ọnụ ahịa)

C. Eletrọd njikwa (platinum)

Isi ihe dị n'ime nyocha ahụ bụ akwụkwọ mpempe akwụkwọ nke zirconia nke a na-agbakọ na corundum tube iji mepụta tube a na-emechi emechi ma kpughee ya na ọwa ikuku gas nke usoro combustion.The ojiji nke electrodes wuru nwere ike n'ụzọ dị irè igbochi corrosion components site na imebi electrodes na. mụbaa ndụ ọrụ.

Ọrụ nke COe electrode na O₂electrode bụ otu, ma ọdịiche dị n'etiti abụọ electrodes bụ electrochemical na catalytic Njirimara nke akụrụngwa, nke mere na combustible components na flue gas dị ka CO na H.₂nwere ike ịmata ma chọpụta. N'ọnọdụ nke ọkụ ọkụ zuru oke, "Nernst" voltaji UO₂a na-etolitekwa na COe electrode, na electrodes abụọ ndị a nwere otu ihe mgbagwoju anya. Mgbe ị na-achọpụta combustion na-ezughị ezu ma ọ bụ ihe ndị na-ere ọkụ, a ga-emepụtakwa UCOe na-abụghị "Nernst" voltaji na COe electrode, mana njirimara njirimara nke electrodes abụọ na-agagharị iche iche.

Mgbama voltaji UCO/H₂nke mkpokọta ihe mmetụta bụ mgbama voltaji nke COe electrode tụrụ. Mgbama a gụnyere mgbaama abụọ ndị a:

UCO/H₂(ngụkọta ihe mmetụta) = UO₂(Oxygen ọdịnaya) + UCO₂/H₂(ihe ndị nwere ike ire ọkụ)

Ọ bụrụ na a na-atụle ọdịnaya oxygen site na O₂A na-ewepụ electrode na mgbama nke ngụkọta ihe mmetụta, nkwubi okwu bụ:

UCOe (ihe na-ere ọkụ) = UCO/H₂(ngụkọta ihe mmetụta)-UO₂(Ọdịnaya oxygen)

Enwere ike iji usoro a dị n'elu iji gbakọọ akụrụngwa combustible COe tụrụ na ppm. Ihe mmetụta nyocha bụ njirimara mgbama voltaji na-ahụkarị. Eserese na-egosi usoro ntụgharị (akara dashed) nke ntinye uche COe mgbe ọdịnaya oxygen na-ebelata nke nta nke nta.

Mgbe combustion na-abanye na mpaghara enweghị ikuku, n'ebe a na-akpọ "emission edge", mgbe ikuku na-ezughị ezu na-akpata combustion ezughị ezu, ntinye COe kwekọrọ na ya ga-abawanye nke ukwuu.

E gosipụtara njirimara mgbama enwetara na eserese nhụgharị nyocha.

UO₂(ahịrị na-aga n'ihu) na UCO/H₂(akara akara).

Mgbe ikuku bụ njupụta na combustion bụ kpamkpam nke COe components, ihe mmetụta sensọ UO₂na UCO/H₂bụ otu ihe ahụ, na dịka ụkpụrụ "Nernst" si dị, a na-egosipụta ọdịnaya oxygen dị ugbu a nke ọwa flue gas.

Mgbe ị na-abịaru nso na "ọnụ mmiri ịgbapụta", ngụkọta ihe mmetụta voltaji mgbaàmà UCO/H₂nke COe electrode na-abawanye na ọnụ ọgụgụ na-adịghị mma n'ihi ihe mgbakwunye ọzọ na-abụghị Nernst COe. Maka njirimara mgbama voltaji nke ihe mmetụta: UO₂na UCO/H₂N'ihe gbasara ọdịnaya oxygen dị na ọwa flue gas, a na-egosipụtakwa àgwà nke ihe ọkụkụ ọkụ COe ebe a.

Na mgbakwunye na akara voltaji nke sensọ UCO / H₂na UO₂, ihe mmetụta mmetụta dịtụ ike na-egosi dU O₂/dt na dUCO/H₂/ dt na karịsịa nsonye mgbaama mgbanwe mgbanwe nke COe electrode nwere ike iji kpochie "ọnụ ikuku" nke combustion.

(Lee “ọkụ ọkụ na-ezughị ezu: oke mgbanwe voltaji nke COe electrode UCO/H₂")

Nka nka

•Ọrụ ntinye nyocha abụọ: Enwere ike ịkwado otu onye nyocha nwere nyocha abụọ, nke nwere ike chekwaa ọnụ ahịa ojiji yana melite ntụkwasị obi nha.

•Ọrụ mmepụta ọtụtụ: Onye nyocha ahụ nwere mmepụta mgbaàmà 4-20mA abụọ dị ugbu a yana nkwurịta okwu kọmputa-kọmputa RS232 ma ọ bụ netwọk netwọk RS485. Otu ọwa nke mmepụta mgbaàmà oxygen, ọwa nke ọzọ nke mmepụta mgbaàmà CO.

•Oke nha: Ọnụ ọgụgụ nke oxygen bụ 10^-30ruo 100% oxygen ọdịnaya, na carbon monoxide nha nha bụ 0-2000PPM.

•Ntọala mkpu:Onye nyocha ahụ nwere mmepụta mkpu n'ozuzu 1 yana mpụta mkpu mmemme 3.

• Ndozi akpaaka:Onye nyocha ahụ ga-enyocha sistemu arụ ọrụ dị iche iche na-akpaghị aka wee hazie ya ozugbo iji hụ na onye nyocha ziri ezi n'oge nha.

•Sistemụ ọgụgụ isi:Onye nyocha nwere ike mezue ọrụ nke ntọala dị iche iche dịka ntọala ekpebiela.

•Gosipụta ọrụ mmepụta:Onye nyocha ahụ nwere ọrụ siri ike nke igosipụta paramita dị iche iche na nrụpụta siri ike na njikwa njikwa nke paramita dị iche iche.

•Ọrụ nchekwa:Mgbe ọkụ adịghị arụ ọrụ, onye ọrụ nwere ike ijikwa gbanyụọ ọkụ nke nyocha iji hụ na nchekwa n'oge eji.

•Nwụnye dị mfe ma dị mfe:ntinye nke onye nyocha dị nnọọ mfe ma enwere eriri pụrụ iche iji jikọọ na nyocha zirconia.

Nkọwapụta

Ntinye

• Otu nyocha zirconia ma ọ bụ abụọ ma ọ bụ otu ihe nyocha zirconia + CO sensọ

• Flu ma ọ bụ temometa mapụtara ụdị K, R, J, S ụdị

• Ntinye mgbama na-ehichapụ gas nrụgide

• Nhọrọ nke mmanụ ọkụ abụọ dị iche iche

• njikwa ọrụ nchekwa na-egosi mgbawa (naanị ọdabara maka nyocha ọkụ)

Nsonaazụ

Mpụta akara ngosi ahịrị abụọ 4 ~ 20mA DC (ibu kacha 1000Ω)

• Oke mmepụta mbụ (nhọrọ)

Ọdịnaya oxygen sitere na 0 ~ 1% ruo 100%.

Ihe nrụpụta logarithmic 0.1 ~ 20% oxygen ọdịnaya

Ihe mmepụta micro-oxygen 10^-39ruo 10^-1ikuku oxygen

• Oke mmepụta nke abụọ (nwere ike ịhọrọ site na ndị a)

Ọdịnaya Carbon monoxide (CO) uru PPM

Carbon dioxide (CO₂)%

Ntụle gas na-ere ọkụ PPM uru

Ịrụ ọkụ ọkụ

Dekọọ uru oxygen

Uru combustion anoxic

Ọkụ ọkụ

Ngosipụta Parameter nke abụọ

• Carbon monoxide carbon (CO) PPM

• Ịrụ ọkụ ọkụ ọkụ ọkụ

• Nnwale mmepụta voltaji

• Ọnọdụ okpomọkụ nke nyocha

• Ọnọdụ okpomọkụ

• Ụbọchị ọnwa nke afọ

• iru mmiri gburugburu

• okpomọkụ flu

• Nyochaa mgbochi

• Ndekọ hypoxia

• Oge ọrụ na nhazi oge

Kọmputa / ngwa nbipute nkwukọrịta

Onye nyocha ahụ nwere ọdụ ụgbọ mmiri serial RS232 ma ọ bụ RS485, nke enwere ike ijikọ ozugbo na ọdụ kọmputa ma ọ bụ ngwa nbipute, enwere ike ịchọpụta nyocha na ngwa ahụ site na kọmpụta.

Nhicha uzuzu na nhazi gas ọkọlọtọ

Onye nyocha ahụ nwere ọwa 1 maka iwepụ uzuzu na ọwa 1 maka ọkọlọtọ gas calibration ma ọ bụ ọwa 2 maka ọkọlọtọ gas calibration mmepụta relays, na valvụ solenoid nke nwere ike ịrụ ọrụ na-akpaghị aka ma ọ bụ aka.

izi eziP

± 1% nke ọgụgụ oxygen n'ezie yana nkwụghachi nke 0.5%. Dịka ọmụmaatụ, na 2% oxygen ziri ezi ga-abụ ± 0.02% oxygen.

MkpuP

Onye nyocha ahụ nwere mkpu n'ozuzu 4 nwere ọrụ 14 dị iche iche, yana mkpu mmemme 3. Enwere ike iji ya maka akara ịdọ aka ná ntị dị ka ikuku oxygen dị elu na nke dị ala, CO dị elu na nke dị ala, na njehie nyocha na mmejọ nha.

Ngosipụta nsoP

Gosipụta 10 na-akpaghị aka^-30Ọdịnaya oxygen 100% O2 yana ọdịnaya carbon monoxide 0ppm ~ 2000ppm CO.

Gas ntụakaP

Ikuku ikuku site na obere igwe na-ama jijiji.

Ike Ruireqements

85VAC ruo 264VAC 3A

Okpomọkụ na-arụ ọrụ

Okpomọkụ na-arụ ọrụ -25°C ruo 55°C

Iru mmiri dị n'etiti 5% ruo 95% (anaghị ekpokọta ọnụ)

Ọkwa nke Nchekwa

IP65

IP54 na n'ime ntụnyere ikuku mgbapụta

Akụkụ na ibu

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