Txhawm rau xaiv qhov tsim nyog calibration gas cylinder rau cov khoom siv roj, koj yuav tsum txiav txim siab hom roj, nws cov concentration, thiab cov khoom siv lub tog raj kheej.
1.Xaiv lub tog raj kheej cov khoom siv raws li cov khoom siv tshuaj lom neeg ntawm cov roj.
Lub hom phiaj yog los tiv thaiv kev tshwm sim (xws li adsorption lossis oxidation) ntawm phab ntsa sab hauv ntawm lub tog raj kheej thiab cov pa roj.
Rau inert los yog tsis yog -cov pa roj adsorptive- xws li O2, N2, CH4, thiab lwm yam. - carbon steel cylinders yog siv, vim lawv muaj tshuaj lom neeg ruaj khov thiab siv tau zoo.
Rau reactive lossis corrosive gases -xws li CO, CO2, SO2, thiab lwm yam.-aluminium alloy cylinders yog siv; lawv cov phab ntsa hauv cov du yuav txo qis adsorption.
Rau cov pa roj carbon monoxide zoo heev lossis muaj zog corrosive-xws li Cl2, H2S, NH3, NO2, thiab lwm yam.-carbon steel cylinders uas muaj cov txheej txheem sab hauv (xws li Teflon lossis silicon) yog siv. Rau corrosive gases, lub valve yuav tsum tau tsim los ntawm stainless hlau.
2.Kev txiav txim siab lub tog raj kheej specifications (loj) raws li kev siv ntim thiab daim ntawv thov scenario.
Feem ntau lub tog raj kheej ntim muaj xws li 1L, 2L, 4L, 8L, 40L, thiab lwm yam.
Rau cov ntawv thov nqa tau yooj yim lossis ua haujlwm ntsuas ib ntus - qhov twg siv zaus tsawg-1L txog 4L lub tog raj kheej raug pom zoo.
Rau cov tshuab nyob ruaj ruaj lossis cov ntawv thov uas xav tau kev ntsuas ntau zaus, lub tog raj kheej nrog lub peev xwm ntawm 8L lossis loj dua raug pom zoo.
3. Txee Lub neej ntawm cov thooj voos kheej kheej rojrau gas detector
A. Cov pa ruaj khov: 1 xyoos.
B. Tsawg-concentration corrosive gases: Tsawg dua 6 lub hlis (xws li Cl2, H2S, NH3, thiab lwm yam).
C. Reactive gases (piv txwv li, NO2, Cl2, thiab lwm yam) muaj ib tug txawm luv luv txee lub neej.
4. Yuav ua li cas xaiv qhov tsim nyog Gas Concentration?
Raws li txoj cai dav dav, nws raug pom zoo kom xaiv qhov concentration ntawm 50% thiab 80% ntawm qhov ntsuas tag nrho. Piv txwv li, yog tias qhov ntsuas qhov ntsuas qhov ntsuas yog 0-100 ppm, xaiv cov roj calibration nrog cov concentration ntawm 50-80 ppm.
Zam tsis yog -linear Zone: Rau feem ntau cov sensors, linearity nyiam ua tsis zoo nyob rau hauv 0-10% thiab 90-100% thaj tsam ntawm tag nrho cov nplai, uas tuaj yeem ua rau qhov ntsuas tsis raug.
Xyuas kom meej qhov tseeb: Cov kev ntsuas niaj hnub feem ntau poob rau hauv nruab nrab ntawm qhov ntsuas; calibrating ntawm qhov concentration no ua kom qhov tseeb siab tshaj plaws rau cov txiaj ntsig feem ntau ntsib thaum ua haujlwm.
Tswj Kev Nyab Xeeb Kev Nyab Xeeb: Qhov no ua kom ntseeg tau tias lub sensor yuav tsis raug puas tsuaj los ntawm kev ntsuas qee zaus uas tshaj qhov ntsuas tag nrho.
A.Rau kev saib xyuas ib puag ncig lossis kev nyab xeeb kev ua haujlwm, nws yog pom zoo kom xaiv ib qho concentration uas yog 2 mus rau 5 npaug ntawm lub tswb ntsuas pib lossis kev cai txwv. Qhov no ua kom qhov ntsuas qhov tseeb tshwj xeeb nyob ib puag ncig lub tswb tseem ceeb.
B.Combustible Gas Detection (LEL): Xaiv qhov concentration ntawm 50% LEL (kwv yees li 2.5% vol methane) rau calibrating sensors tsim los xyuas cov roj xws li methane, propane, lossis hydrogen.
C.Oxygen Detection: Siv cov pa oxygen concentration ntawm 18% lossis 21% vol los ntsuas cov ntsuas ntsuas kom pom cov pa oxygen-enriched lossis oxygen- ib puag ncig tsis txaus.
5. Ib qho -Point lossis Multi-Point Calibration (Xav txog qhov xwm txheej tshwj xeeb)
Feem ntau, tsuas yog ib lub calibration gas cylinder yog yuav tsum tau, nrog ib tug xaiv concentration ntawm 50% thiab 80% ntawm tag nrho cov teev. Multi-point calibration siv 2 mus rau 3 lub tog raj kheej uas muaj calibration gases ntawm txawv concentrations:
Tsawg Concentration Point: 10–20% ntawm tag nrho cov nplai (siv los ntsuas rau xoom-point drift).
Medium Concentration Point: 40-60% ntawm tag nrho cov nplai.
High Concentration Point: 80-90% ntawm tag nrho cov nplai.
Tsis txhob muaj kev xav tsis zoo: Kev siv cov roj calibration nrog rau qhov kev xav ntau dhau tsis tas yuav zoo dua; concentrations tshaj 90% tej zaum yuav ua rau lub sensor nkag mus rau nws saturation los yog tsis yog -linear ntau yam, yog li compromising calibration raug.