Kev daws pH thiab acidity meter
Nyob rau theem nrab tsev kawm ntawv, peb tau hnov cov xibfwb hais tias daim ntawv xeem PH yog siv los ntsuas cov kua qaub thiab alkalinity ntawm cov tshuaj. Thaum daim ntawv xeem kov cov tshuaj, nws yuav hloov xim, thiab mam li nyeem PH raws li xim. Nws tshwj xeeb yog tej yam yees siv thaum ntawd.
Hauv cov txheej txheem kev sim tiag tiag, qhov tseeb ntawm PH daim ntawv xeem yog nyob deb ntawm qhov txaus, yog li kuv yuav ua li cas thiaj li tau txais PH tus nqi ntawm cov tshuaj kom raug dua?
Tom qab ntawd peb yuav tsum tso siab rau PH meter peb tab tom tham txog hnub no. Yog, nws tseem hu ua pH meter!
Instrument Introduction
Suav lub npe ph meter, tseem hu ua acidity meter
Lub npe txawv teb chaws PH meter
Kev ntsuas ntau 0-14PH
Kev them nyiaj yug voltage AC220V
Tso zis 4-20ma, RS485 thiab lwm yam teeb liab
Kev ntsuas kub ntawm 0-130 degrees Celsius
Tswv yim
PH ntsuas
Lub pH meter, pH meter, yog ib qho cuab yeej siv los txiav txim siab pH ntawm cov tshuaj. Lub sensor siv cov khoom siv hluav taws xob ntawm cov tshuaj los ntsuas cov hydrogen ion concentration los txiav txim siab pH ntawm cov tshuaj. Tus nqi tsis zoo ntawm lub logarithm ntawm hydrogen ion concentration yog hu ua tus nqi pH. Feem ntau, pH yog 0 mus rau 14. Cov pH ntawm cov dej nruab nrab ntawm 25 ° C yog 7, cov tshuaj muaj pH tsawg dua 7 yog acidic, thiab pH ntau dua 7 yog alkaline. Qhov kub thiab txias muaj qhov cuam tshuam loj rau ionization coefficient ntawm dej, thiab qhov nruab nrab ntawm qhov ua rau pH hloov nrog kub. Lub hauv paus ntsiab lus ntawm kev ntsuas pH los ntawm pH meter yog tsim kom muaj kev sib raug zoo ntawm kev ua haujlwm ion thiab lub zog hluav taws xob los ntawm kev siv txoj kev tsom xam, thiab ntsuas pH tus nqi los ntawm kev ntsuas qhov tam sim no ntawm thawj lub roj teeb.
Ceev faj
Lub iav electrode yuav tsum tau muab tso rau hauv dej distilled rau ntau tshaj ib hmo ua ntej nws siv thawj zaug. Nws tseem yuav tsum tau muab tso rau hauv dej distilled rau siv txhua lub sijhawm. Tsis txhob kov lub iav electrode uas muaj zog dej-absorbing hnyav rau ntev heev. Siv nws hauv cov tshuaj alkali muaj zog sai li sai tau. Ntxuav nws nrog dej tam sim ntawd tom qab siv. Lub iav electrode teeb yog nyias thiab tsis tuaj yeem kov nrog iav thiab cov khoom tawv. Thaum cov roj muaj paug, siv cawv, ces carbon tetrachloride los yog ether, thiab thaum kawg soak hauv cawv, ces ntxuav nrog dej distilled. Thaum ntsuas pH ntawm cov tshuaj uas muaj protein ntau, qhov saum npoo ntawm cov electrode yog kis nrog cov protein, uas ua rau kev nyeem ntawv tsis txaus ntseeg, tsis ruaj khov, thiab ua yuam kev. Cov electrode tuaj yeem muab tso rau hauv dilute HCl (0.1 mol / L) rau 4-6 feeb los kho nws. . Tom qab ntxuav cov electrode, koj tsuas tuaj yeem siv cov ntawv lim kom qhuav nws maj mam. Tsis txhob so nrog ntaub. Qhov no yuav ua rau cov electrode tsim kom muaj qhov zoo li qub thiab ua rau kev nyeem ntawv yuam kev. Thaum siv cov calomel electrode, yuav tsum ceev faj tias cov electrode muaj cov tshuaj poov tshuaj chloride, thiab yuav tsum tsis txhob muaj cua npuas los tiv thaiv qhov qhib Circuit Court. Ib qho me me ntawm cov poov tshuaj chloride crystals yuav tsum muaj kom cov tshuaj nyob rau hauv lub xeev saturated. Thaum siv, cov roj hmab ntsaws rau sab saum toj ntawm lub electrode raug tshem tawm, thiab ib qho me me ntawm cov tshuaj poov tshuaj chloride raug tso tawm los ntawm capillary kom qhov ntsuas qhov ntsuas tau ntseeg tau.
Tsis tas li ntawd, qhov tseeb ntawm qhov ntsuas pH nyob ntawm qhov tseeb ntawm tus qauv tsis haum. Standard buffers rau acidity meters yuav tsum tau ntau dua stability thiab tsawg kub dependence.
