Yuav ua li cas yog cov core gas sensors ntawm gas detectors cais
Gas detectors yog dav siv nyob rau hauv kev lag luam chaw tsim kho, tshuaj nroj tsuag, thiab cov chaw uas muaj kuab paug nyob rau hauv lub neej txhua hnub. Lub hauv paus tseem ceeb ntawm gas detectors yog gas sensors. Yog li, dab tsi yog qhov kev faib tawm ntawm kev ua haujlwm ntawm cov pa sensors?
1. Semiconductor gas sensor
Semiconductor gas sensors tau siv dav hauv thaj chaw xws li kev soj ntsuam roj hauv tsev, khoom plig, thiab cov khoom siv hauv tsev ntse.
2. Electrochemical gas sensor
Lub tshuab hluav taws xob hluav taws xob hluav taws xob zoo li lub npe, nws ntsuas qhov concentration ntawm cov pa los ntawm kev ntsuas tam sim no. Qhov zoo ntawm electrochemical gas sensors yog lawv cov rhiab heev thiab kev xaiv zoo, thaum qhov tsis zoo yog tias lawv lub neej kev pabcuam feem ntau nyob ib ncig ntawm ob xyoos.
3. Catalytic combustion gas sensor
Lub combustion gas sensor tsis yog rhiab heev rau cov roj uas tsis yog combustible, yog li nws daim ntawv thov yooj yim teb yog los xyuas cov roj combustible. Yog li ntawd, nws feem ntau yog siv los saib xyuas cov roj hluav taws xob hauv cov roj av thiab cov roj av, cov nroj tsuag tshuaj, cov tuam txhab luam yeeb, thiab lwm yam lag luam. Nws txoj hauv kev ua haujlwm yog tias cov khoom siv roj rhiab heev hauv hluav taws xob, thiab lawv cov nplaim taws raug cuam tshuam los ntawm cov catalyst. Cov hluav taws xob cua sov hlau ua kom sov vim yog kev sib txuas, yog li hloov nws cov nqi tsis kam.
4. Optical gas sensor
Photogas sensors feem ntau muaj xws li infrared absorption type, spectral absorption type, fluorescence absorption type, thiab lwm yam, feem ntau suav nrog hom infrared nqus. Kev ntsuas qhov infrared absorption wavelength tuaj yeem ntes cov pa roj vim tias cov pa sib txawv muaj qhov sib txawv ntawm kev nqus ntawm infrared nthwv dej. Niaj hnub no, vim nws cov qauv kev sib txuas, tus nqi feem ntau yog siab heev.
5. Khoom electrolyte gas sensor
Khoom electrolyte yog ib hom tshuaj roj teeb uas siv cov khoom ion conductivity raws li cov electrolyte. Nws nyob ntawm semiconductors thiab electrochemistry. Kev xaiv thiab rhiab heev yog siab dua li ntawm semiconductors, thiab lawv lub neej ntev dua li ntawm electrochemistry, ua rau lawv haum rau ntau daim ntawv thov. Qhov tsis zoo yog lub sijhawm teb ntev.
