Txheej txheem cej luam ntawm lub hauv paus ntsiab lus ua hauj lwm ntawm hydrogen sulfide detector
Hauv qee qhov chaw hydrogen sulfide gas, daim ntawv thov ntawm hydrogen sulfide detectors tuaj yeem tsis tsuas yog kuaj xyuas cov concentration ntawm hydrogen sulfide, tab sis kuj ceeb toom cov concentration ntawm hydrogen sulfide nyob rau hauv ib puag ncig thiab coj cov kev tiv thaiv kev nyab xeeb ua ntej. Yog li, koj puas paub txoj hauv kev ua haujlwm ntawm hydrogen sulfide detectors?
Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm hydrogen sulfide gas detector:
Lub hydrogen sulfide gas detector siv cov khoom tseem ceeb amperometric electrochemical sensors, feem ntau muaj peb lub electrodes raus hauv ib qho electrolyte. Lub tshuab electrode ua haujlwm yog tsim los ntawm txheej txheej hlau nrog kev ua haujlwm catalytic ntawm lub breathable tab sis hydrophobic membrane. Cov roj ntsuas tau dhau los ntawm electrochemical oxidation lossis oxidation cov tshuaj tiv thaiv los ntawm cov kua nplaum, thiab nws cov yam ntxwv ntawm cov tshuaj tiv thaiv nyob ntawm qhov ntsuas kub ntawm cov electrode ua haujlwm thiab cov khoom siv hluav taws xob (oxidation los yog rov qab) cov yam ntxwv ntawm cov roj ntsuas.
Hauv cov tshuaj tiv thaiv electrochemical, koom nrog electrons ntws mus rau hauv (rov qab) lossis tawm (oxidize) cov electrode ua haujlwm. Lub teeb liab ua haujlwm ntawm cov electrode ua haujlwm yog amplified los ntawm U2 los ua lub teeb liab tawm ntawm lub cuab yeej. Lub Circuit Court tswj qhov voltage ntawm cov electrode ua hauj lwm ntawm qhov bias VBIAS tus nqi. Tus qauv electrode muab lub peev xwm ruaj khov rau kev ua haujlwm electrode hauv electrolyte.
Tom qab muab piv cov txheej txheem electrode muaj peev xwm nrog VBIAS, cov zis voltage teeb liab ntawm U1 raws nraim tsim tib lub teeb liab tam sim no raws li cov electrode ua hauj lwm. Nyob rau tib lub sijhawm, Circuit Court tswj qhov muaj peev xwm sib txawv ntawm qhov ua haujlwm electrode thiab siv electrode. Kev ntsuas hluav taws xob tsuas yog qhov thib ob electrode yuav tsum tau ua kom tiav electrochemical sensor, thiab nws lub luag haujlwm tseem ceeb yog tso cai rau cov hluav taws xob nkag los yog tawm ntawm electrolyte.
