Yuav ua li cas txiav txim siab tus naj npawb ntawm pH meter calibrations?
Tus naj npawb ntawm pH meter calibrations nyob ntawm tus qauv, electrode kev ua tau zoo thiab kev ntsuas qhov tseeb. Kev ntsuas siab (tsawg dua lossis sib npaug rau ±0.03pH) yuav tsum tau ntsuas raws sijhawm. Kev ntsuas qhov tseeb dav dav (tsawg dua lossis sib npaug rau ± 0.1pH), nws tuaj yeem siv tsis tu ncua rau ib lub lis piam lossis ntau dua tom qab ib qho kev ntsuas. Tsis tas li ntawd, koj tuaj yeem sim thawj qhov kev daws teeb meem tsis zoo uas nyob ze rau qhov kev daws teeb meem raug sim, thiab txiav txim siab seb puas yuav tsum tau rov ua dua raws li qhov loj ntawm qhov yuam kev. Cov cuab yeej yuav tsum tau recalibrated nyob rau hauv cov xwm txheej hauv qab no:
⑴ Electrodes uas tsis tau siv ntev thiab hloov tshiab electrodes.
⑵ Tom qab ntsuas cov kua qaub (pH<2), or after measuring concentrated alkali (pH>12).
⑶ Tom qab ntsuas cov kev daws teeb meem uas muaj cov tshuaj fluoride thiab cov ntsiab lus organic tseem ceeb.
⑷Thaum qhov ntsuas kub ntawm qhov ntsuas ntsuas yog qhov sib txawv ntawm qhov ntsuas kub thaum lub sijhawm ntsuas ntsuas.
Dab tsi yog pH transmitter? Nws siv rau dab tsi?
Lub pH transmitter yog pH meter haum rau siv hauv kev lag luam. Ib qho kawg ntawm nws txuas nrog pH electrode, hloov qhov ntsuas qhov peev xwm ntawm pH electrode rau hauv cov qauv teeb liab tawm ntawm 1 ~ 5V lossis 4 ~ 20mA. Cov teeb liab no tuaj yeem nkag mus rau pH maub los lossis lub khoos phis tawj tswj chaw, thiab tuaj yeem ua haujlwm los ntawm lub computer kom ua tiav pH tswb thiab tswj lub hom phiaj. Lub pH transmitter kuj tau ua rau hauv hom zaub. Ntawm ib sab, nws qhia cov ntaub ntawv ntsuas thiab tib lub sijhawm tso tawm cov teeb liab txheem. Txij li thaum lub teeb liab tso zis yog qhov tsis muaj zog, qhov tso zis deb tuaj yeem yog kaum mus rau pua pua meters.
Ntev npaum li cas yuav tsum tau ntsuas pH meter electrodes?
Lub sij hawm calibration ntawm online pH meter electrode nyob ntawm seb cov txheej txheem ntawm qhov chaw. Qhov ruaj khov ntawm cov txheej txheem ntawm qhov chaw (kub, siab, muaj pes tsawg leeg, tsis muaj av, thiab lwm yam), qhov ruaj khov ntawm qhov ntsuas pH meter hauv online thiab lub sijhawm kho lub sijhawm ntev dua.
Feem ntau hais lus, feem ntau hauv online pH meter electrodes yog ntsuas ib zaug ib hlis lossis hli. Ntev los yog luv calibration ncua sij hawm kuj tseem ua tau nyob ntawm qhov xwm txheej ntawm qhov chaw. Nyob rau hauv lub hauv paus ntawm kev ua kom paub tseeb qhov tseeb ntawm pH calibration, nws yog qhov zoo tshaj rau calibrate ntau zaus thaum xub thawj, thiab ces maj mam ncua lub sij hawm calibration.
