Koj puas paub tias electrode ntawm pH meter hauv online puas thiab yuav kho li cas?
Hauv cov txheej txheem ntawm kev ntsuas ph, qhov tseem ceeb tshaj plaws yog qhov kub thiab txias. Ntawm qhov kub sib txawv, txawm tias tib cov qauv dej yuav muaj qhov sib txawv ph. Yog li ntawd, ntau yam ph meters hauv online tau nruab nrog qhov kub thiab txias Circuit Court kom tshem tawm cov nyhuv no. Thaum calibrating, siv lub thawv tiv thaiv kom nkag mus rau ib qho kev tiv thaiv tshwj xeeb, thiab nkag mus rau tus nqi sib xws. Cov cuab yeej yuav tsim kom muaj kev sib raug zoo ntawm qhov kub thiab txias, tom qab ntawd thaum ntsuas, tus nqi tiv thaiv kis tau los ntawm qhov kub thiab txias electrode tuaj yeem suav tau kom tau txais qhov ntsuas kub. Qhov zoo ntawm cov electrode ntawm online ph meter yog qhov tseem ceeb uas cuam tshuam ncaj qha rau cov txiaj ntsig kev xeem.
Qhov "kev puas tsuaj" ntawm cov hluav taws xob sib xyaw ntawm cov pH meter hauv online feem ntau yog hais txog qhov txo qis hauv rhiab heev gradient, qeeb teb, thiab kev nyeem ntawv tsis zoo. Feem ntau, cov neeg siv khoom tuaj yeem siv cov txheej txheem tsim nyog los kho nws. Cov hauv qab no yog cov lus qhia ntxaws txog "kev puas tsuaj" vim li cas thiab kho cov txheej txheem ntawm online ph meter.
1. Lub qhov muag hluav taws xob thiab cov kua dej sib txuas ntawm cov pH meter online yog cov pa phem, thiab cov av tuaj yeem ua tib zoo tshem tawm nrog txhuam zoo, paj rwb pob los yog tshuaj txhuam hniav. Kev tiv thaiv npog ntawm lub taub hau electrode ntawm qee lub plhaub yas pH meters tuaj yeem raug tshem tawm, uas ua rau kev ntxuav yooj yim dua. Yog tias muaj kuab paug hnyav, nws tuaj yeem ntxuav nrog xab npum.
2. Cov tshuaj siv sab nraud yog qias neeg, thiab qee cov qauv electrode tuaj yeem muab ntxiv rau cov tshuaj. Nyob rau lub sijhawm no, kev siv sab nraud ntawm kev lag luam hauv online pH meter electrode tuaj yeem tso tawm nrog lub koob txhaj tshuaj los npaj cov tshuaj 3.3M tshiab lossis saturated KCl. Ntxiv nws dua, xyuam xim rau di yi, thiab tom qab ntawd rub nws tawm thaum ntxiv nws rau zaum ob, txhawm rau ntxuav cov kab noj hniav sab hauv ntawm cov electrode.
3. Kev laus ntawm iav rhiab zaj duab xis: Soak lub qhov muag hluav taws xob ntawm lub tshuab hluav taws xob hauv internet pH nrog 0.1mol/L dilute hydrochloric acid (9ml hydrochloric acid diluted rau 100ml nrog dej ntshiab) rau 24 teev, ntxuav nws nrog ntshiab dej, thiab ces tsau nws nrog cov electrode soaking tov ntawm pH meter rau 24 teev. Yog hais tias tus passivation loj heev, koj tuaj yeem tsau qhov qis kawg ntawm cov electrode ntawm kev lag luam online pH meter hauv 4 feem pua hydrofluoric acid tov rau 3-5 vib nas this (kev daws teeb meem: 4ml hydrofluoric acid yog diluted rau 100ml nrog dej ntshiab) , thiab tom qab ntawd ntxuav nrog dej ntshiab, thiab tom qab ntawd tsau rau hauv pH meter electrode soaking tov rau 24 teev kom rov ua tau nws cov kev ua tau zoo.
