Cov teeb meem uas yuav tsum tau them sai sai rau thaum siv lub ntsuas pH
Ua ntej yuav mus, qhov kev ncaj ncees ntawm cov electrodes yuav tsum tau kuaj ua ntej. Tam sim no, feem ntau ntawm cov electrodes siv rau acidimeter (PH meter) yog cov electrodes sib xyaw. Cov laus tiam ntawm acidimeter tseem siv iav electrodes thiab calomel electrodes. Txij li cov khoom siv electrodes tau dav siv, cov hauv qab no feem ntau tham txog cov electrodes sib xyaw.
Calibrate lub ntsuas raws li cov lus qhia ntsuas, thiab kho qhov ntsuas ntsuas thiab cov txheej txheem tsis haum rau qhov kub thiab txias. Ua ntej ntxig cov electrode rau hauv cov txheej txheem tsis haum uas nws cov pH txawv ntawm cov qauv kuaj tsis pub ntau tshaj ob chav pH, tig rau kev nyeem ntawv hloov, kho qhov chaw kom qhov kev nyeem ntawv raws nraim pH ntawm cov qauv kev daws teeb meem, thiab rov ua dua. ob peb zaug kom ruaj ntseg nyeem ntawv. Tshem tawm cov electrode, ntxuav nws, thiab muab tso rau hauv thawj txheej txheem tsis tov. Tom qab ntsuas qhov tseeb, nws tuaj yeem siv los ntsuas tus qauv.
Cov kauj ruam tseem ceeb ntawm kev siv lub acidometer:
1. Qhib lub hwj chim hloov mus rau preheat.
2. Ua qhov kub thiab txias.
3. Siv cov txheej txheem kev daws teeb meem rau qhov chaw.
4. Siv cov qauv kev daws teeb meem rau kev kho txoj kab nqes.
5. Ntsuas pH.
Cov kev ceev faj:
1. Cov iav electrodes uas siv tshiab tshiab yuav tsum tau muab tso rau hauv dej distilled rau 48 teev rau kev ua haujlwm ua ntej siv.
2. Lub teeb ib feem ntawm cov iav electrode muaj cov phab ntsa nyias heev thiab yuav tsum tau tiv thaiv ntau dua thaum siv.
3. Cov kua uas yuav tsum tau kuaj yuav tsum nyob rau ntawm qhov kub thiab txias raws li cov txheej txheem kev daws teeb meem, txwv tsis pub qhov kub thiab txias yuav tsum tau ua dua.
Thaum hloov cov tshuaj yuav tsum tau ntsuas, cov electrode yuav tsum tau ntxuav thiab qhuav.
Cov khoom siv hluav taws xob sib xyaw tam sim no siv nyob rau hauv lub chaw soj nstuam feem ntau suav nrog tag nrho cov ntaub ntawv kaw thiab tsis nyob ib puag ncig. Muaj ob peb lub kaw lus electrodes, uas yog tsim los ntawm cov tuam txhab txawv teb chaws. Ua ntej siv cov khoom siv hluav taws xob sib xyaw, ua ntej xyuas seb lub iav qhov muag puas tawg lossis tawg. Yog hais tias tsis yog, thaum ua ob-point calibration nrog ib tug pH tsis tov, thaum ob qho tag nrho cov positioning thiab txoj kab nqes nyees khawm tuaj yeem hloov kho rau tus nqi pH, nws feem ntau suav hais tias muaj kev nyab xeeb siv. Txwv tsis pub, nias Siv cov lus qhia rau kev ua kom electrode.
Tom qab kev ntsuas tiav lawm, cov roj hmab yuav tsum tau rov qab thiab lub qhov me me yuav tsum tau muab kaw. Tom qab cov electrode ntxuav nrog dej distilled, nws yuav tsum tau tsau rau hauv 3mol / L potassium chloride tov kom cov electrode noob moist. Yog tias pom tias cov electrode tau poob cov tshuaj tiv thaiv ua ntej siv, nws yuav tsum tau tsau rau hauv 3mol / L potassium chloride tov rau ob peb teev. , kom cov electrode tuaj yeem ua tiav qhov ntsuas zoo tshaj plaws. Hauv kev siv tiag tiag, nws tau pom tias qee cov kws tshuaj ntsuam xyuas cov khoom siv hluav taws xob zoo li iav electrode thiab tsau nws hauv dej distilled ntev. Qhov no tsis yog lawm. Qhov no yuav txo tau qhov concentration ntawm potassium chloride tov nyob rau hauv cov electrode composite, uas ua rau cov electrode teb yog insensitive thaum ntsuas, uas thaum kawg ua rau cov ntaub ntawv ntsuas tsis raug. Yog li ntawd, cov khoom siv electrode yuav tsum tsis txhob muab tso rau hauv dej distilled ntev.
