Qhov sib txawv ntawm acidity meter thiab pH meter
1. Qhov txawv ntawm acidity meter thiab ph meter
Lub ntsuas acidity yog tib yam li pH ntsuas. Nws yog ib tug high-precision muaj hauv internet tsis siv neeg thiab nruam nrhiav kom tau acidity thiab alkalinity.
Acidity meter, hu ua pH meter, muaj ob ntu: electrode thiab hluav taws xob ntsuas. Nws yog ib qho cuab yeej siv thiab khoom siv. Nws muaj peb ntu: siv electrode, iav electrode thiab ammeter. Siv dav hauv kev lag luam, kev ua liaj ua teb, kev tshawb fawb tshawb fawb, kev tiv thaiv ib puag ncig thiab lwm yam.
Acidity meter yog ib qho cuab yeej siv thiab cov cuab yeej siv, tseem hu ua PH meter. Nws yog tsuas yog siv los ntsuas pH tus nqi ntawm cov kua nruab nrab. Nws tseem tuaj yeem ntsuas qhov MV tus nqi ntawm ion electrode muaj peev xwm nrog cov ion xaiv electrode. BPH-200A series pH meter yog dav siv hauv kev lag luam, kev ua liaj ua teb, kev tshawb fawb, kev tiv thaiv ib puag ncig thiab lwm yam haujlwm. Cov cuab yeej tseem yog cov cuab yeej tshuaj xyuas tseem ceeb rau QS thiab HACCP ntawv pov thawj hauv cov chaw tsim khoom noj thiab cov dej haus.
Lub pH meter yog ib qho cuab yeej rau ntsuas pH ntawm kev daws. Lub cev ntawm pH meter yog qhov tseeb potentiometer. Thaum ntsuas, ntxig cov hluav taws xob sib xyaw rau hauv cov tshuaj uas yuav tsum tau kuaj, thiab cov hluav taws xob sib txawv yuav raug tsim tawm vim qhov sib txawv acidity (hydrogen ion concentration) ntawm cov tshuaj yuav tsum tau kuaj, uas yuav tsum tau amplified los ntawm DC amplifier, thiab thaum kawg lub nyeem ntawv ntsuas (voltmeter) yuav taw qhia qhov ntsuas pH tus nqi. Lub ntsuas pH tuaj yeem siv nyob rau hauv thaj tsam ntawm 0-14pH.
3. Kev ceev faj rau kev siv ph meter
1. Raws li ib txwm muaj, thaum lub cuab yeej siv tas li, nws yuav tsum tau ntsuas ib hnub ib zaug; Feem ntau, qhov ntsuas tsis tas yuav tsum tau ntsuas hauv 24 teev.
2. Ua ntej siv, rub lub hau roj hmab rau ntawm qhov kawg ntawm lub electrode kom nthuav tawm qhov me me ntawm qhov kawg.
3. Cov tshuaj calibration buffer feem ntau siv pH =6 86 tov rau thawj zaug, thiab cov tshuaj tsis nyob ze rau tus nqi pH ntawm cov tshuaj ntsuas rau zaum ob. Yog tias qhov ntsuas ntsuas yog acidic, qhov tsis yuav tsum yog pH =4 00; Thaum cov tshuaj yog alkaline, xaiv qhov tsis muaj pH=9.18.
4. Thaum ntsuas, cov hlau lead ntawm cov electrode yuav tsum tau khaws cia, txwv tsis pub nws yuav ua rau qhov ntsuas tsis ruaj khov. 5. Tsis txhob ntub cov electrode hauv dej distilled.
6. Khaws lub qhov muag hluav taws xob kom ntub. Yog tias pom tias qhuav, nws yuav tsum tau tsau rau hauv 3mol / L cov tshuaj potassium chloride lossis cov kua qaub me ntsis rau ob peb teev ua ntej siv los txo cov peev xwm asymmetric ntawm cov electrode.
