Tsib ntu tso cai rau koj kom nkag siab zoo txog pH meter
Lub PH meter yog ib qho tseem ceeb rau kev ntsuas thiab ua rau cov pH ntawm cov tshuaj. Muaj ntau yam qauv thiab cov khoom ntawm PH meter, thiab muaj ob hom zaub: pointer zaub thiab cov zaub digital. Txawm li cas los xij, txawm tias hom PH meter hloov pauv li cas, nws txoj haujlwm ua haujlwm yog tib yam. Ib yam li ntawd, nws lub cev yog qhov tseeb potentiometer.
Electrode Composition Form hauv Potentiometric System
Qhov sib xyaw ntawm pH electrode thiab siv electrode hauv potentiometric system:
1. Monomer pH electrode ntxiv rau kev siv electrode (pH electrode thiab siv electrode raug cais, tag nrho ntawm ob lub electrodes)
2. Composite pH electrode (pH electrode thiab siv electrode yog ua ke ntawm ib lub electrode)
Muaj peev xwm sib txawv ntawm pH meter
Calibration ntawm pH meter siv pH tus qauv kev daws teeb meem uas ua raws li JIS cov qauv. pH txheem kev daws teeb meem suav nrog oxalate (1.68pH), phthalate (4.01pH), nruab nrab phosphate (6.86pH), phosphate (7.41pH), borate (9.18pH), carbonate (10.01pH).
Yuav siv li cas pH meter (cov kauj ruam)
Kev npaj ua ntej siv lub ntsuas pH
1. Ntxuav lub electrode nrog triple distilled dej ua ntej siv lub pH meter, thiab ceev faj tsis txhob ua txhaum lub iav electrode.
2. Npaj muab cov tshuaj NaOH thiab HCl tov rau kev hloov kho ntawm lub platform pH meter.
3. Tshem tawm cov tshuaj pH tas li (pH=70) hauv lub tub yees thiab muab tso rau ntawm lub platform.
4. Qhib lub ntsuas pH, kho tus nqi pH, nias tus yuam sij ︿﹀ xaiv cov pH thiab CAL xaiv, xaiv cov khoom CAL, kho thiab ntxig rau hauv cov tshuaj pH (pH=7). } }), nias tus yuam sij "" xaiv cov ntaub ntawv tus nqi rau 7.0, Ib tug me me octopus tuaj yeem tshwm sim.
5. Ntxig lub iav electrode rau hauv cov tshuaj uas yuav tsum tau kuaj, tom qab ntawd muab lwm cov electrode, thiab do cov kua kom zoo (ceeb toom: tsis txhob tawg lub iav electrode).
6. Lub tshuab hluav taws xob ntawm lub ntsuas pH yuav tsum tau ua tib zoo saib xyuas kev tiv thaiv ntawm Circuit Court. Thaum tsis ntsuas pH tus nqi, cov tswv yim ntawm pH meter yuav tsum luv luv kom tsis txhob muaj kev puas tsuaj rau pH meter.
7. Lub qhov (socket) iav electrode ntawm lub ntsuas pH yuav tsum tau ua kom huv si, huv si thiab qhuav, thiab yuav tsum tsis txhob raug cov pa phem xws li ntsev tsuag thiab kua qaub pos. Nyob rau tib lub sij hawm, nws yog nruj me ntsis txwv tsis pub muaj cov tshuaj aqueous ntawm lub iav electrode qhov (socket) kom tsis txhob muaj cov input siab impedance ntawm pH meter.
8. Ceev faj ntxiv cov tshuaj NaOH thiab cov tshuaj HCl thaum tus nqi pH koj xav tau tsis ncav cuag.
9. Ceev faj kom tsis txhob siab tshaj qhov yuav tsum tau ntim ntim thaum ntxiv cov kua.
