Koj paub ntau npaum li cas txog cov sensors feem ntau siv hauv cov khoom siv roj
Lub sensor yog qhov tseem ceeb nrhiav kom pom ntawm lub tswb ntsuas roj. Lub sensor yog ib lub cuab yeej lossis cov cuab yeej uas tuaj yeem nkag siab qhov ntsuas ntsuas thiab hloov nws mus rau hauv qhov muaj cov teeb liab tso tawm raws li txoj cai.
Liye Detector: Koj puas paub ntau npaum li cas txog cov sensors uas nquag siv hauv cov khoom siv roj
Gas sensor yog ib tug sensor siv los xyuas qhov muaj pes tsawg leeg thiab cov ntsiab lus ntawm cov roj. Feem ntau hais lus, lub ntsiab lus ntawm lub roj sensor yog raws li kev faib tawm ntawm lub hom phiaj nrhiav kom pom. Qhov ntawd yog hais tias, ib qho sensor siv los kuaj xyuas qhov muaj pes tsawg leeg thiab cov concentration ntawm cov pa roj yog hu ua gas sensor. , tsis hais nws yog los ntawm lub cev txoj kev los yog chemical method.
Piv txwv li, cov sensors uas ntes cov roj ntws tsis suav tias yog cov roj hluav taws xob, tab sis thermal conductivity gas analyzers yog qhov tseem ceeb roj sensors, txawm tias qee zaum lawv siv tib lub hauv paus ntsiab lus tshawb nrhiav. Los ntawm nws lub hauv paus ntsiab lus, peb tuaj yeem faib ua peb pawg hauv qab no:
1. Gas sensors siv lub cev thiab tshuaj muaj zog: xws li semiconductors, catalytic combustion, khoom kub conduction, photoionization, thiab lwm yam;
2. Gas sensors siv lub cev muaj zog: xws li thermal conductivity, lub teeb cuam tshuam, infrared absorption, thiab lwm yam;
3. Electrochemical gas sensors: hom tam sim no, yam muaj peev xwm.
Catalytic combustion sensor;
Nws belongs rau lub ntsuas kub kub, thiab nws txoj haujlwm ua haujlwm yog cov khoom siv roj-rhiab heev (xws li Pt hluav taws xob cua sov hlau, thiab lwm yam) yog oxidized thiab hlawv nyob rau hauv qhov kev txiav txim ntawm lub catalyst thaum cov khoom siv roj (xws li Pt. cua sov hlau, thiab lwm yam) yog oxidized thiab hlawv nyob rau hauv qhov kev txiav txim ntawm ib tug catalyst. .
electrochemical sensor
Lub sensor precision, electrochemical sensors ua hauj lwm los ntawm reacting nrog lub hom phiaj roj thiab tsim hluav taws xob teeb liab proportional rau cov roj concentration. Ib tug raug electrochemical sensor muaj ib tug sensing electrode (los yog ua hauj lwm electrode) thiab ib tug counter electrode.
semiconductor sensor
Nws yog ib qho dav-spectrum sensor, thiab nws txoj haujlwm ua haujlwm yog qhov tsis kam ntawm cov hlau oxide semiconductor nto hloov tom qab nqus cov pa.
infrared sensor
Raws li cov precision sensor, nws muaj qhov ntsuas zoo heev. Tam sim no, nws tsuas yog kuaj pom cov pa roj carbon tsawg hydrocarbons thiab CO2.
