Kev siv cov pH sojntsuam kom raug thiab kev cia ntawm pH meter sojntsuam
Kev siv cov pH sojntsuam kom raug thiab kev cia ntawm pH meter sojntsuam. pH meter yog dav siv hauv kev lag luam tshuaj; thermal zog tsim; metallurgy; kev tiv thaiv ib puag ncig; electrode. Calomel siv electrode thiab iav electrode, feem. Feem ntau, nws yuav tsum tau muab khaws cia kom zoo thaum nws tsis siv, txwv tsis pub nws yuav ua rau txo qis qhov ntsuas qhov tseeb thiab lub neej ua haujlwm luv.
1. Calomel electrode
A. Cov roj hmab me me ntawm sab ceg yuav tsum tau muab tshem tawm thaum siv, txwv tsis pub nws tsis tuaj yeem ua lub luag haujlwm ntawm ion pauv ntawm tus choj ntsev. Thaum tsis siv, cov roj hmab me me thiab lub hau roj hmab kawg yuav tsum tau them.
B. Sau cov kua theem mus rau qhov khoov ntawm lub khob raj; khaws cov kua theem npog nrog calomel;
C. Siv raws li cov khoom siv electrode; puv nrog saturated KCl tov; yuav tsum muaj ib qho me me ntawm KCl crystals hauv nws
2.PH iav electrode
Cov iav electrodes raug pom zoo kom siv nyob rau hauv lub sijhawm siv tau. Tshwj xeeb, nws yog electrode rau pH qhia.
3. Cia
Thaum lub ntsuas pH tsis tau npaj rau kev siv mus ntev, nws yuav tsum tau tiv thaiv kom ntseeg tau qhov tseeb thiab kev pabcuam lub neej. Cov txheej txheem tshwj xeeb yog raws li hauv qab no:
A. Cov electrodes ntawm pH meter yuav tsum tau ua kom huv si thiab tsis muaj kev puas tsuaj;
B. So hauv dej ntshiab kom tsawg li ib hnub (24H) ua ntej siv;
C. Yog tias koj yuav tsum siv nws ntau zaus; yaug nws thiab soak hauv dej ntshiab tom qab siv; thaum nws tsis siv sijhawm ntev;
D. Thaum tsis siv sijhawm ntev, nws yuav tsum tau tsau; muab nws tawm; qhuav nws nrog lim ntawv; khaws cia rau hauv ib lub thawv, uas tuaj yeem ua rau lub neej ntev ntawm pH sojntsuam.
