Dab tsi yog xoom drift ntawm pH meter thiab yuav daws nws li cas!
Dab tsi yog xoom drift ntawm pH meter thiab yuav daws nws li cas! Qhov teeb meem ntawm xoom drift ntawm pH meter yuav tsum xub nkag siab txog xoom drift. Muaj ntau yam cuam tshuam rau xoom drift ntawm lub ntsuas hluav taws xob, tshwj xeeb tshaj yog qhov sib txuas ncaj qha amplifier, uas nyuaj rau kev kov yeej qhov cuam tshuam loj ntawm xoom drift. Thaum lub hwj chim mov voltage hloov pauv, lub xeev kev khiav hauj lwm ntawm lub amplifying element yam ntxwv hloov, thiab cov tsis muaj Circuit Court ntsiab hloov nrog lub ambient kub thiab lub sij hawm ua hauj lwm. Thaum cov tswv yim yog xoom, cov zis hloov pauv, uas yog, qhov xoom taw tes drift. Ib zaug ntxiv, nws yog qhov tsim nyog los nrhiav qhov teeb meem. Cov teeb meem ntawm pH electrode yuav ua kom pom tseeb dua. Piv txwv li, electrode scaling yuav ua rau qhov kev tiv thaiv ntawm cov electrodes tsis sib npaug thiab ua rau drift. Kev cuam tshuam electromagnetic ntev yuav ua rau muaj teeb meem. Lub polarization ntawm cov electrodes kuj zoo ib yam. tseem yuav cuam tshuam. 1. Muaj ntau txoj hauv kev los txo cov kev xav tau los ntawm xoom drift: 1. Siv cov khoom siv fais fab, 2. Siv AC amplifier circuit. 3. Dynamic input impedance. Muaj pH meter thiab kuaj pH meter stability thiab xoom drift tov.
1. Daim ntawv thov tsis zoo tawm tswv yim Circuit Court. Txhawm rau kom tsis txhob xoom drift thiab txhim kho kev ruaj ntseg, cov amplifiers siv hauv pH ntsuas txhua tus siv cov lus qhia tsis zoo. Kev siv DC cov lus tawm tswv yim tsis zoo tuaj yeem tsis tsuas yog ua kom cov tswv yim impedance ntawm lub ntsuas hluav taws xob, tab sis kuj txhim kho kev ruaj ntseg ntawm lub ntsuas hluav taws xob Lub rhiab heev thiab ntau yam ntawm cov cuab yeej tsis cuam tshuam los ntawm cov kev hloov pauv ntawm cov khoom siv hluav taws xob.
2. Kev xaiv thiab txij nkawm ntawm pH electrode. Cov khoom siv hluav taws xob sib xyaw ntawm pH meter yog cov khoom siv tseem ceeb los xyuas kom meej qhov ntsuas ntsuas qhov tseeb. Cov electrodes zoo heev yuav tsum raug xaiv los tiv thaiv kev cuam tshuam ntawm ntau yam tshuaj, qhov kub thiab txias, kev co thiab lwm yam kom muaj kev ruaj ntseg. Tom qab kev ntsuam xyuas hauv cov qauv, nws yuav tsum tau muab ntxuav dua kom tshem tawm cov kua seem ntawm cov qauv ntawm cov electrode, kom tsis txhob muaj lub teeb conjunctiva ntawm cov electrode los ntawm kev txo qhov rhiab heev thiab nws thiaj li ua rau kev ntsuas tsis ua haujlwm.
