Hom Gas Sensor thiab Gas Detector Vaj Tsev
Txhawm rau xaiv txoj cai thiab zoo dua roj sensor lossis ntes vaj tse rau koj cov khoom,
cia peb xyuas seb koj lub roj teeb sensor lossis gas detector hom twg thaum xub thawj.
Gas sensors thiab gas detector vaj tse yog qhov tseem ceeb ntawm kev ruaj ntseg systems nyob rau hauv ntau yam kev lag luam thiab cov chaw nyob. Lawv ua haujlwm ua ke txhawm rau txhawm rau txheeb xyuas qhov muaj thiab qhov siab ntawm cov pa phem, muab kev ceeb toom ntxov ntawm kev phom sij thiab tso cai rau kev khiav tawm raws sijhawm lossis ntsuas kev txo qis.
Hom Gas Sensors
Muaj ntau ntau hom roj sensors, txhua tus muaj nws tus kheej lub zog thiab tsis muaj zog. Qee yam uas feem ntau muaj xws li:
1. Electrochemical sensors:
Cov sensors siv cov tshuaj tiv thaiv tshuaj los tsim cov teeb liab hluav taws xob uas yog proportional rau cov
concentration ntawm lub hom phiaj gas.
Lawv yog cov rhiab heev rau ntau yam gases, nrog rau cov pa roj toxic, flammable gases, thiab oxygen.
2. Hlau oxide semiconductor (MOS) sensors:
Cov sensors no siv cov hluav taws xob conductivity ntawm cov hlau oxide semiconductor los kuaj pom cov pa roj.
Lawv yog cov tshwj xeeb rhiab heev rau txo cov pa roj, xws li hydrocarbons thiab carbon monoxide.
3. Catalytic hlaws sensors:
Cov sensors siv cov tshuaj tiv thaiv catalytic los ua kom sov, uas yog ntsuas los txiav txim siab
lub concentration ntawm lub hom phiaj gas. Lawv feem ntau yog siv los txheeb xyuas cov pa roj carbon monoxide.
4. Infrared (IR) sensors:
Cov sensors siv lub teeb infrared los xyuas qhov nqus ntawm cov roj molecules.
Lawv tshwj xeeb tshaj yog rau qee cov pa roj carbon dioxide thiab methane.
5. Photoionization detectors (PIDs):
Cov sensors siv ultraviolet (UV) lub teeb rau ionize roj molecules,
uas yog ces kuaj tau los ntawm ib qho hluav taws xob teb.
Lawv rhiab heev rau ntau yam ntawm cov organic gases,
suav nrog volatile organic compounds (VOCs).
Gas Detector Vaj Tsev
Gas detector vaj tse yog tsim los tiv thaiv cov pa sensors los ntawm ib puag ncig thiab muab kev nyab xeeb thiab nyab xeeb rau lawv ua haujlwm. Lawv feem ntau yog ua los ntawm cov khoom siv ruaj khov, xws li cov hlau tsis muaj steel lossis txhuas, thiab feem ntau raug kaw kom tsis txhob muaj plua plav, noo noo, thiab lwm yam kab mob.
Muaj ntau ntau hom kev ntsuas roj av, txhua tus tsim los rau ib daim ntawv thov tshwj xeeb. Qee yam uas feem ntau muaj xws li:
1. Flameproof vaj tse:
Cov vaj tse no yog tsim los tiv thaiv qhov hluav taws kub ntawm cov pa taws thaum muaj hluav taws xob.
Lawv feem ntau yog siv rau hauv thaj chaw muaj kev phom sij, xws li cov roj refineries thiab cov nroj tsuag tshuaj.
2. Cov khoom pov thawj tawg:
Cov vaj tse no yog tsim los tiv thaiv lub siab ntawm kev tawg.
Lawv feem ntau yog siv rau hauv thaj chaw uas muaj kev pheej hmoo ntawm kev tawg,
xws li mines thiab offshore drilling platforms.
3. Intrinsically ruaj ntseg vaj tse:
Cov vaj tse no yog tsim los tiv thaiv kev hla ntawm cov pa taws lossis lwm qhov chaw ntawm qhov hluav taws kub
rau hauv tsev. Lawv feem ntau yog siv nyob rau hauv cov cheeb tsam uas muaj kev pheej hmoo ntawm hluav taws xob sparks, xws li grain silos thiab ntawv mills.
4. Weatherproof vaj tse:
Cov vaj tse no yog tsim los tiv thaiv cov pa sensors los ntawm cov khoom,
xws li nag, daus, thiab hmoov av. Lawv feem ntau yog siv rau sab nraum zoov daim ntaub ntawv.
Kev siv Gas Sensors thiab Gas Detector Housings
Gas sensors thiab gas detector vaj tse yog siv nyob rau hauv ntau yam kev siv, xws li:
* Muaj kev nyab xeeb:
Gas sensors thiab gas detector vaj tse yog siv los saib xyuas qhov muaj cov pa phem nyob rau hauv kev lag luam chaw, xws li factories, refineries, thiab tshuaj nroj tsuag.
* Kev saib xyuas ib puag ncig:
Gas sensors thiab gas detector vaj tse yog siv los saib xyuas qhov muaj cov pa phem hauv huab cua, xws li carbon monoxide, sulfur dioxide, thiab nitrogen oxides.
* Kev tua hluav taws:
Gas sensors thiab gas detector vaj tse yog siv los ntawm cov neeg tua hluav taws los xyuas seb puas muaj cov pa phem nyob hauv cov tsev hlawv.
* Kev nyab xeeb hauv tsev:
Gas sensors thiab gas detector vaj tse yog siv nyob rau hauv cov tsev los xyuas seb muaj cov pa roj carbon monoxide, natural gas, thiab lwm yam gases txaus ntshai.
Gas sensors thiab gas detector vaj tse yog cov cuab yeej siv kev nyab xeeb tseem ceeb uas ua lub luag haujlwm tseem ceeb hauv kev tiv thaiv tib neeg thiab khoom los ntawm kev puas tsuaj.
Lub ntsiab nta ntawm Gas Sensor thiab Gas Detector Vaj Tsev
Lub vaj tsev ntawm lub tshuab hluav taws xob yog ib qho tseem ceeb uas yuav pab tiv thaiv lub sensor thiab nws cov kev cuam tshuam los ntawm ib puag ncig yam, thaum muab cov ntaub thaiv npog uas tso cai rau cov roj tshwj xeeb kom ncav cuag lub sensor kom pom tseeb. Cov yam ntxwv tseem ceeb ntawm lub tsev nyob hauv cov pa roj pa feem ntau suav nrog:
1. Khoom siv:
Lub vaj tsev feem ntau yog tsim los ntawm cov ntaub ntawv uas tiv taus corrosion thiab lwm yam kev puas tsuaj uas tej zaum yuav tshwm sim los ntawm gases thiab lwm yam ib puag ncig. Cov ntaub ntawv no tuaj yeem suav nrog ntau hom yas, hlau zoo li stainless hlau, lossis cov ntaub ntawv tshwj xeeb rau qhov chaw hnyav.
2. Gas Inlet thiab Outlet:
Lub vaj tsev feem ntau yuav muaj cov roj nkag thiab qhov hluav taws xob. Cov no tso cai rau lub hom phiaj roj nkag mus rau hauv vaj tse thiab ncav cuag lub sensor, thiab tom qab ntawd tawm hauv tsev. Kev tsim ntawm cov inlets thiab qhov hluav taws xob tuaj yeem yog qhov tseem ceeb los xyuas kom meej qhov kev nyeem ntawv sensor.
3. Kev tiv thaiv ib puag ncig:
Cov qauv tsim vaj tsev feem ntau suav nrog cov yam ntxwv uas tiv thaiv lub sensor los ntawm plua plav, av noo, qhov kub thiab txias, thiab lwm yam ib puag ncig uas tuaj yeem cuam tshuam rau lub sensor ua haujlwm lossis ua rau nws puas. Qhov no tuaj yeem suav nrog kev siv cov gaskets, ntsaws ruaj ruaj, lossis lwm yam kev tiv thaiv.
4. Mounting Mechanisms:
Nyob ntawm daim ntawv thov, lub tsev yuav suav nrog cov yam ntxwv tshwj xeeb rau kev teeb tsa lub sensor hauv nws qhov chaw ua haujlwm. Qhov no tuaj yeem suav nrog cov ntsia hlau qhov, brackets, lossis lwm yam khoom siv.
5. Kev sib txuas hluav taws xob:
Lub vaj tse tseem yuav muaj cov kev cai rau kev sib txuas hluav taws xob, tso cai rau lub sensor cuam tshuam nrog lwm qhov system. Qhov no tuaj yeem cuam tshuam nrog cov terminals, qhov (sockets), lossis cov qog qog.
6. Miniaturization:
Raws li kev siv thev naus laus zis zuj zus, muaj kev tsav tsheb tsis tu ncua rau cov khoom siv me me thiab siv tau zoo dua. Miniaturized vaj tse uas tseem muab kev pom zoo ua haujlwm yog qhov tsis tu ncua.
7. Explosion-proof Design:
Rau cov sensors siv nyob rau hauv ib puag ncig nrog cov pa taws, lub tsev yuav raug tsim los ua pov thawj tawg. Qhov no feem ntau suav nrog kev tsim kho muaj zog uas tuaj yeem muaj qhov tawg sab hauv yam tsis tso cai rau nws ua rau cov pa taws hauv ib puag ncig.
8. EMI/RFI Shielding:
Qee lub tsev nyob yuav suav nrog kev tiv thaiv los tiv thaiv lub sensor thiab nws cov khoom siv hluav taws xob los ntawm electromagnetic cuam tshuam (EMI) lossis xov tooj cua cuam tshuam (RFI).
9. Yooj yim Kho thiab Calibration Access:
Lub vaj tse feem ntau yog tsim los tso cai rau kev nkag tau yooj yim rau kev saib xyuas lossis ntsuas qhov ntsuas lub ntsuas. Qhov no tuaj yeem suav nrog cov npog uas tshem tau lossis lwm yam kev nkag tau.
10. Kev Cai Ua Raws Cai:
Nyob ntawm thaj tsam thiab daim ntawv thov, vaj tse yuav tsum ua raws li cov qauv kev cai tshwj xeeb. Qhov no tuaj yeem cuam tshuam txog nws cov qauv tsim, cov ntaub ntawv siv, thiab lwm yam.
Koj tuaj yeem tshawb xyuas Sensor Lub Tsev ntawm Cov Khoom Siv Hluav Taws Xob Hluav Taws Xob Hluav Taws Xob Cov Lus Qhia Rau Cov Yeeb Yam Ua Ntej,
Qhov twg rau nruab rau Gas Sensor Housing?
Qhov twg los txhim kho lub tsev ntawm lub tshuab hluav taws xob tuaj yeem ua tau zoo nyob ntawm seb hom roj yuav raug kuaj pom, qhov ntsuas qhov tshwj xeeb, thiab cov xwm txheej tshwj xeeb ntawm ib puag ncig uas yuav tsum tau siv lub sensor. Txawm li cas los xij, muaj qee qhov kev txiav txim siab dav dav rau kev txhim kho gas sensor vaj tsev:
1.Qhov chaw ntawm Gas Presence:Qhov zoo tshaj plaws, cov roj sensor yuav tsum tau muab tso rau hauv qhov chaw uas cov pa xau feem ntau yuav tshwm sim lossis qhov chaw uas nws xav tias yuav khaws cia. Piv txwv li, vim propane hnyav dua li huab cua, sensors ntes propane yuav tsum muab tso rau hauv av qis. Hloov pauv, txij li methane sib zog dua huab cua, sensors rau methane yuav tsum nyob ze ntawm lub qab nthab.
2. Qhov cua:Lub sensor yuav tsum tau muab tso rau hauv ib qho chaw zoo-ventilated kom tso cai rau cov pa mus txog qhov sensor zoo.
3. Zam kev cuam tshuam:Lub sensor yuav tsum tau nruab rau hauv qhov chaw uas tsis muaj kev cuam tshuam los xyuas kom meej tias cov roj tuaj yeem ncav cuag lub sensor.
4. Zam qhov chaw ntawm tshav kub thiab ignition:Lub sensor yuav tsum nyob deb ntawm qhov chaw ntawm tshav kub, qhib nplaim taws, los yog lwm yam muaj peev xwm ignition qhov chaw, tshwj xeeb tshaj yog yog hais tias lub sensor yog npaj los mus ntes cov nplaim taws.
5.Away ntawm Corrosive lossis Contaminating Tshuaj:Lub sensor yuav tsum nyob deb ntawm kev sib cuag ncaj qha nrog corrosive lossis kab mob, uas yuav cuam tshuam rau nws txoj haujlwm lossis ua rau muaj kev puas tsuaj.
6.Access for Maintenance:Lub sensor yuav tsum tau muab tso rau hauv ib qho chaw uas tso cai rau kom yooj yim nkag mus rau niaj hnub tu, calibration, thiab tej zaum yuav kho los yog hloov.
7. Ua raws li cov kev cai:Cov kev cai yuav xav tau cov roj sensors nyob rau hauv cov chaw tshwj xeeb lossis xav tau ntau lub sensors rau kev saib xyuas dav dav.
8.Kev zam dhau ntawm cov xwm txheej hnyav:Txawm hais tias lub tsev yog tsim los tiv thaiv lub sensor, nws tseem yog qhov zoo tshaj plaws kom tsis txhob muab tso rau hauv qhov chaw ntawm huab cua sov, txias, av noo, los yog thaj chaw muaj kev cuam tshuam rau cov neeg kho tshuab hnyav lossis kev vibrations.
9.Nyob ze qhov chaw muaj peev xwm ntawm Gas Leaks:Nyob rau hauv ib puag ncig kev lag luam, cov roj sensor yuav tsum tau muab tso rau ze rau qhov muaj peev xwm ntawm cov pa xau, xws li cov kav dej, li qub, fittings, lossis cov thawv ntim khoom.
FAQ
Q1: Cov ntaub ntawv dab tsi feem ntau yog siv rau cov pa roj carbon monoxide thiab vim li cas?
A1: Gas sensor vaj tse feem ntau yog tsim los ntawm cov khoom siv uas muaj zog, ruaj khov, thiab tiv taus qhov hnyav hnyav uas lawv feem ntau ntsia. Cov ntaub ntawv no tuaj yeem sib txawv tab sis feem ntau sib txawv ntawm cov yas lossis hlau. Piv txwv li, ABS yas yog feem ntau siv vim nws lub zog, tsis kam mus rau tshuaj, thiab pheej yig. Nyob rau hauv ib puag ncig xav tau ntau dua, cov hlau tsis muaj steel lossis lwm cov hlau tsis muaj corrosion-resistant hlau alloys yuav raug siv vim lawv cov kav ntev thiab muaj peev xwm tiv taus qhov kub thiab txias. Cov khoom uas tau xaiv rau lub tsev yuav tsum tsis txhob muaj kev cuam tshuam nrog cov pa roj los yog cov pa roj kom tsis txhob cuam tshuam nrog lub sensor ua haujlwm.
Q2: Yuav ua li cas tsim cov roj inlet thiab qhov hluav taws xob hauv vaj tse cuam tshuam rau kev ua haujlwm sensor?
A2: Kev tsim cov roj nkag thiab qhov hluav taws xob hauv lub tsev yog qhov tseem ceeb rau kev ua haujlwm ntawm lub sensor. Lawv tau tsim los tso cai rau lub hom phiaj roj kom ncav cuag lub sensor thiab cov roj uas tsis yog lub hom phiaj lossis siv lub hom phiaj roj kom tawm mus. Yog tias tus qauv tsim tsis zoo, nws yuav txwv tsis pub tus nqi ntawm cov pa nkag mus rau lub sensor, qeeb lub sij hawm teb, los yog nws tuaj yeem tso cai rau tsub zuj zuj ntawm cov roj uas tsis yog lub hom phiaj, uas yuav ua rau kev nyeem ntawv tsis raug. Qhov loj, zoo li, thiab qhov chaw ntawm qhov nkag thiab qhov hluav taws xob yog txhua yam uas tuaj yeem cuam tshuam rau kev ua haujlwm sensor.
Q3: Dab tsi tiv thaiv kev tiv thaiv ib puag ncig yog muab tso rau hauv cov pa roj sensor vaj tsev?
A3: Gas sensor vaj tse feem ntau suav nrog ntau yam kev tiv thaiv ib puag ncig. Qhov no tuaj yeem suav nrog cov ntsaws ruaj ruaj lossis gaskets los tiv thaiv plua plav lossis ya raws, cov khoom siv hluav taws xob los yog cov khoom siv insulators los tiv thaiv qhov kub thiab txias, thiab kev tsim kho zoo los tiv thaiv lub cev puas tsuaj. Qee zaum, lub tsev kuj tseem tuaj yeem suav nrog kev tiv thaiv los tiv thaiv lub sensor thiab nws cov khoom siv hluav taws xob los ntawm electromagnetic cuam tshuam (EMI) lossis xov tooj cua cuam tshuam (RFI). Cov kev tiv thaiv no pab xyuas kom meej tias lub sensor txuas ntxiv ua haujlwm kom raug hauv ntau qhov chaw thiab cov xwm txheej.
Q4: Yuav ua li cas yog lub mounting ntawm lub gas sensor vaj tse feem ntau tswj?
A4: Lub mounting ntawm cov pa roj sensor vaj tse nyob ntawm daim ntawv thov, tab sis nws yog feem ntau tsim los hloov tau thiab hloov mus rau ntau yam scenarios. Cov vaj tse yuav suav nrog cov yam ntxwv zoo li cov qhov ntsia hlau, cov hlua txuas, lossis cov qhov sib txuas rau cov zip sib txuas kom yooj yim txuas rau phab ntsa, qab nthab, tshuab, lossis lwm yam qauv. Qee cov pa roj sensor tsev nyob yog tsim los kom yooj yim txav los yog hloov chaw, tso cai rau kev teeb tsa ib ntus lossis nqa tau yooj yim. Thaum mounting lub sensor, nws yog ib qho tseem ceeb kom paub tseeb tias cov roj inlet thiab lub qhov hluav taws xob tsis muaj kev cuam tshuam thiab lub sensor yog positioned kom raug rau cov roj mus kuaj.
Q5: Vim li cas kev nkag tau yooj yim rau kev saib xyuas thiab ntsuas qhov tseem ceeb hauv kev tsim cov pa roj sensor vaj tsev?
A5: Kev saib xyuas niaj hnub thiab ntsuas ntsuas yog qhov tseem ceeb los xyuas kom meej tias lub ntsuas pa roj txuas ntxiv ua haujlwm kom raug thiab muab kev nyeem ntawv raug. Sij hawm dhau mus, kev ua haujlwm ntawm lub sensor tuaj yeem txav mus los, lossis lub sensor yuav ua qias neeg lossis lwm yam yuav tsum tau saib xyuas. Yog li ntawd, kev tsim vaj tsev feem ntau tso cai rau kev nkag tau yooj yim rau lub sensor rau cov haujlwm no. Qhov no yuav suav nrog cov npog lossis qhov rooj tshem tau, nkag mus rau cov chaw nres nkoj, lossis txawm tias cov qauv tsim qauv uas tso cai rau lub sensor kom yooj yim tshem tawm thiab hloov. Qhov no ua kom ntseeg tau tias lub sensor tuaj yeem tswj tau yooj yim, ua rau muaj kev ua tau zoo rau lub sijhawm ntev thiab muaj peev xwm ncua lub neej ntawm lub sensor.
Q6: Dab tsi yog qee qhov kev txiav txim siab rau kev txhim kho cov pa roj carbon monoxide nyob rau hauv qhov chaw tawg?
A6: Thaum txhim kho cov pa roj carbon monoxide nyob rau hauv qhov chaw muaj peev xwm tawg tau, lub tsev yuav tsum muaj pov thawj tawg los yog muaj kev nyab xeeb. Qhov no feem ntau suav nrog kev tsim kho muaj zog uas tuaj yeem muaj qhov tawg sab hauv yam tsis tso cai rau nws ua rau cov pa taws hauv ib puag ncig. Nws kuj txhais tau hais tias cov khoom siv hluav taws xob cuam tshuam nrog lub sensor yuav tsum tsis txhob tsim hluav taws xob lossis lwm yam khoom siv hluav taws xob, txawm tias nyob rau hauv qhov teeb meem txhaum cai. Lub tsev yuav tsum tau ntawv pov thawj raws li cov qauv tsim nyog (xws li ATEX hauv Tebchaws Europe lossis Chav Kawm/Division cov qauv hauv Teb Chaws Asmeskas) los qhia tias nws tau raug tsim thiab sim ua kom muaj kev nyab xeeb hauv cov xwm txheej no. Nco ntsoov sab laj txog cov kev cai thiab cov qauv tsim nyog rau koj cheeb tsam thiab kev lag luam kom ntseeg tau tias kev teeb tsa thiab kev nyab xeeb.
Q7: Dab tsi yog cov ntsiab lus tseem ceeb uas yuav tsum tau xav txog thaum xaiv qhov chaw los teeb tsa lub ntsuas hluav taws xob?
A7: Thaum xaiv qhov chaw rau nruab ib lub tsev nyob rau hauv cov pa roj, muaj ntau yam tseem ceeb los xav txog. Ua ntej, lub sensor yuav tsum tau muab tso rau hauv qhov chaw uas cov pa paug feem ntau yuav tshwm sim los yog qhov twg cov pa yuav tsum khaws cia. Piv txwv li, rau gases hnyav dua huab cua, lub sensor yuav tsum tau muab tso rau qis rau hauv av, thiab rau lighter gases, nyob ze ntawm lub qab nthab. Lub sensor yuav tsum nyob rau hauv ib qho chaw zoo-ventilated, nyob deb ntawm kev thaiv, thiab nyob deb ntawm qhov chaw ntawm tshav kub los yog muaj peev xwm ignition. Nws tseem yog ib qho tseem ceeb kom tsis txhob muab tso rau hauv qhov chaw uas muaj cov av noo siab, corrosive, los yog huab cua txias tshwj tsis yog tias lub vaj tse tshwj xeeb tsim los tiv thaiv cov xwm txheej no. Thaum kawg, xyuas kom meej tias lub sensor tau teeb tsa qhov twg nws tuaj yeem nkag tau yooj yim rau kev saib xyuas niaj hnub thiab calibration.
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