Ib yam dab tsi txog Gas Detectors
1. Cov khoom siv hluav taws xob ruaj khov puas tuaj yeem ua rau ob txoj hlua txuas?
Tsis yog, ob-xaim teeb liab thiab lub hwj chim muab faib ua ib tug hlau, thiab qhov siab tshaj plaws ua hauj lwm tam sim no muab yog 20ma, thaum lub sij hawm ua hauj lwm tam sim no ntawm lub combustible gas sensor yog 80ma, uas yuav tsis tau raws li nws ib txwm ua hauj lwm tam sim no.
2. Yuav ua li cas thiaj li nrhiav tau qhov zoo ntawm lub tshuab ntsuas roj ruaj ruaj?
Raws li "Code for Design of Combustible Gas and Toxic Gas Detection and Alarm in Petrochemical Enterprises" (SH3063-1999):
"3.0.8 Qhov kev pab cuam zoo kab rov tav dav hlau vojvoog ntawm lub combustible gas detector yuav tsum yog 7.5m nyob rau hauv tsev thiab 15m sab nraum zoov. Ib tug detector tuaj yeem ntsia tau rau hauv thaj chaw muaj txiaj ntsig zoo. Qhov kev ncua deb ntawm lub ntsuas roj toxic thiab lub tso tawm qhov chaw, Nws yuav tsum tsis txhob loj dua 2m sab nraum zoov, thiab tsis loj dua 1m sab hauv. "
3. Dab tsi yog cov cai ntawm kev teeb tsa qhov siab ntawm lub tswb ntsuas roj ruaj khov?
Raws li "Code for Design of Combustible Gas and Toxic Gas Detection and Alarm in Petrochemical Enterprises" (SH3063-1999):
"6.1.1 Cov cuab yeej kuaj xyuas kom pom cov roj hluav taws xob lossis cov pa phem hnyav dua li cua yuav tsum tau nruab rau ntawm qhov siab ntawm 0.3-0.6m ntawm pem teb (los yog hauv pem teb).
Faj seeb: Gas ceev ntau dua {{0}}.97kg/m3 (nyob rau hauv tus qauv tej yam kev mob) yog xam tias hnyav dua huab cua; gas density tsawg dua 0.97kg/m3 (raws li tus qauv tej yam kev mob) suav hais tias sib zog tshaj huab cua.
6.1.2 Lub tshuab kuaj xyuas kom pom cov roj hluav taws xob lossis cov pa roj toxic lighter dua huab cua yuav tsum tau nruab rau ntawm qhov siab ntawm 0.5-2m siab tshaj qhov tso tawm. "
4. Dab tsi ntawm cov qauv roj siv los ntsuas lub ntsuas roj hluav taws xob?
Raws li "combustible gas detection and alarm" (JJG693-2004):
"5.1.2.1 Cov khoom siv roj siv tib yam khoom siv raws li cov roj ntsuas, thiab cov khoom siv roj isobutane lossis propane tuaj yeem siv rau cov khoom siv dav dav."
Lub tuam txhab siv isobutane rau calibration.
5. Lub hauv paus ntsiab lus ntawm kev tshawb nrhiav catalytic combustion yog dab tsi?
Lub hauv paus ntsiab lus ntawm catalytic combustion yog npaj ib tug high-temperature-resistant catalyst txheej nyob rau saum npoo ntawm lub platinum resistor. Ntawm qhov kub thiab txias, cov roj combustible yog catalytically combusted ntawm nws nto. Lub combustion ua rau qhov kub thiab txias ntawm platinum resistor nce thiab tsis kam hloov. Tus nqi hloov pauv yog qhov concentration ntawm cov roj combustible. muaj nuj nqi.
6. FS txhais li cas?
FS yog ib lub ntsiab lus rau tag nrho cov nplai. Nws qhia qhov loj ntawm qhov ntsuas qhov ntau.
7. Cov ntxaij vab tshaus zoo li cas tam sim no nyob rau hauv kev ua lag luam, thiab lawv cov yam ntxwv yog dab tsi?
Lub teeb-emitting diodes (LEDs), kua siv lead ua kua (LCDs), thiab organic teeb-emitting zaub (OLEDs) yog tam sim no nyob rau hauv kev ua lag luam.
8. Cov pa hluav taws xob twg tuaj yeem kuaj tau los ntawm lub ntsuas roj raws li lub hauv paus ntsiab lus ntawm PID photoionization nrhiav pom?
Photoion Gas Sensor (PID) yog qhov yooj yim tshaj plaws txoj kev sib txuas lus rau kev ntes cov khoom siv hluav taws xob tsw qab (suab), uas muaj qhov tsis txaus ntseeg, uas muaj qhov tsis txaus ntseeg dua, uas muaj qhov tsis txaus ntseeg ntau dua li lwm hom kev xav. Feem ntau hais lus, photoion gas sensor Lub sensor (PID) feem ntau yog siv rau kev tshawb nrhiav cov organic tebchaw (VOCs), uas suav nrog:
Aromatics: benzene, xylene, naphthalene, thiab lwm yam.;
Saturated thiab unsaturated hydrocarbons: octane, ethylene, cyclohexane, thiab lwm yam.;
Ketones, aldehydes, ethers: acetone, propionaldehyde, propylmethyl ether, thiab lwm yam;
Halogenated hydrocarbons, thiohydrocarbons, cawv, esters, hydrazines, thiab lwm yam.
Tsis tas li ntawd, nrhiav tau cov tshuaj inorganic muaj xws li: arsenic, ammonia.
