Taw qhia txog kev rov kho pH meter electrode raug
Thaum muaj qhov kev ntsuas tseem ceeb hauv pH electrode ntawm peb lub ntsuas pH, peb yuav tsum paub tias qee yam tau pib cuam tshuam rau pH electrode ntawm pH meter.
Qhov "kev puas tsuaj" ntawm pH meter composite PH electrode yog tshwm sim los ntawm kev txo qis hauv rhiab heev gradient, lus teb qeeb, thiab kev nyeem ntawv tsis zoo. Cov av noo sensor sojntsuam, stainless hlau hluav taws xob cua sov raj, PT100 sensor, kua solenoid valve, cam khwb cia txhuas rhaub, thiab lub nplhaib cua sov yuav tshwm sim los ntawm peb yam nram qab no. Feem ntau, cov neeg siv khoom tuaj yeem siv cov txheej txheem tsim nyog los kho lawv.
(1) Cov npuas hluav taws xob thiab cov kua dej sib txuas yog cov kab mob, thiab siv cov txhuam txhuam zoo, paj rwb, lossis txhuam hniav tuaj yeem siv los ua tib zoo tshem cov av. Lub npog tiv thaiv ntawm lub taub hau ntawm qee lub plhaub yas pH electrodes tuaj yeem raug tshem tawm kom yooj yim ntxuav. Yog tias muaj kuab paug hnyav, cov tshuaj ntxuav tau siv tau raws li txoj kev dhau los.
(2) Cov tshuaj siv sab nraud yog paug. Rau rechargeable electrodes, KCl tshuaj tshiab tuaj yeem npaj thiab ntxiv, ua tib zoo saib xyuas kev nyab xeeb. Thaum ntxiv nws dua, nws yuav tsum tau nchuav tawm los ntxuav cov kab noj hniav electrode.
(3) Kev laus ntawm iav rhiab zaj duab xis: Soak lub qhov muag hluav taws xob hauv 0.1mol/L dilute hydrochloric acid rau 24 teev. Ntxuav nrog dej ntshiab thiab tsau cov electrode hauv cov tshuaj rau 24 teev. Yog hais tias tus passivation hnyav heev, qhov qis kawg ntawm cov electrode kuj tuaj yeem muab tso rau hauv 4% hydrofluoric acid tov rau 3-5 vib nas this (kev daws teeb meem: 4ml ntawm hydrofluoric acid diluted rau 100ml nrog dej ntshiab), ntxuav nrog dej ntshiab. , thiab tom qab ntawd muab tso rau hauv cov tshuaj electrode immersion rau 24 teev los kho nws cov kev ua tau zoo.
