Kev faib tawm ntawm pH Meter_Kev ua haujlwm ntawm pH Meter
Kuj hu ua pH meter, acid-base detector, nws yog ib qho cuab yeej siv pH qhia electrode los ntsuas pH tus nqi ntawm kev daws los ntawm txoj kev potentiometric. Lub precision hluav taws xob millivoltmeter tsim los siv nrog ion xaiv electrodes. Txij li thaum lub peev xwm ntawm pH qhia electrode hloov nrog tus nqi pH ntawm cov tshuaj, thaum pH qhia electrode (xws li pH iav electrode) thiab cov ntaub ntawv siv electrode (xws li saturated calomel electrode) yog immersed nyob rau hauv cov tshuaj los tsim ib tug ntsuas roj teeb, lub zog electromotive generated muaj feem xyuam rau pH ntawm cov tshuaj. Lub pH meter converts lub zog electromotive tso zis rau pH nyeem. Txhua lub sijhawm pH yog sib npaug rau 2.303RT/F volts. Tus nqi no txawv nrog qhov ntsuas kub ntawm cov tshuaj hauv cov ntsuas roj teeb. Yog li ntawd, lub pH meter yog nruab nrog ib tug kub them nyiaj knob. Kev kho nws tuaj yeem ua rau lub zog hluav taws xob hloov pauv tus nqi ntawm txhua lub sijhawm pH yog qhov sib npaug ntawm qhov hloov pauv ntawm qhov ntsuas kub. Lub pH meter kuj tau nruab nrog lub chaw tswj hwm qhov chaw, nws txoj haujlwm yog ntxiv qhov tsim nyog rau lub zog hluav taws xob ntawm lub roj teeb, kom qhov kev nyeem ntawv ntawm pH meter yog raws li tus qauv pH tus nqi. Nyob rau hauv txoj kev no, tus nqi pH ntawm cov tshuaj yog tso tawm ncaj qha rau ntawm lub ntsuas. Qhov kev ntsuas dav dav ntawm pH meter yog pH 0 ~ 14, thiab nws tau nruab nrog ± mV iav los nthuav dav kev siv.
Classification ntawm pH meter
1. Kev faib tawm ntawm cov ntsuas
(1) Kev faib tawm raws li lub sijhawm thov: nws tuaj yeem muab faib ua cwj mem pH meter, portable pH meter, kuaj pH meter thiab industrial pH meter, thiab lwm yam. daim ntawv xeem hauv paus, thiab muaj cov yam ntxwv ntawm qhov tsawg precision thiab yooj yim siv. Portable pH meters yog tsuas yog siv rau ntawm qhov chaw thiab qhov chaw ntsuas, yuav tsum tau siab precision thiab zoo meej zog.
(2) Kev faib tawm raws li qhov tseeb ntawm qhov ntsuas: nws tuaj yeem muab faib ua 0.2, 0.1, 0.02, {{9} }.01 thiab 0.001. Tus lej tsawg dua, qhov tseeb dua.
(3) Kev faib tawm raws li kev nyeem ntawv qhia: nws tuaj yeem muab faib ua ob hom: hom pointer thiab hom duab digital. Pointer pH meters tsis tshua siv niaj hnub no, tab sis cov ntsuas ntsuas ntsuas tuaj yeem tso saib cov txheej txheem hloov pauv tas li ntawm cov ntaub ntawv, yog li lawv tseem siv hauv kev tshuaj xyuas titration.
(4) Kev faib tawm raws li hom khoom: nws tuaj yeem muab faib ua hom transistor, integrated circuit type thiab single-chip microcomputer type. Niaj hnub no, ntau cov microcomputer chips tau siv, uas txo qhov loj ntawm qhov ntsuas thiab tus nqi ntawm ib lub tshuab; tab sis tus nqi tsim tawm ntawm cov nti yog kim heev.
2. Laboratory pH meter: Laboratory pH meter yog lub desktop high-precision analytical instrument uas yuav tsum tau siab precision thiab tag nrho cov dej num, nrog rau kev luam tawm, cov ntaub ntawv ua, thiab lwm yam.
3. Industrial pH meter: Industrial pH meter yog siv rau kev ntsuas tas li ntawm cov txheej txheem kev lag luam. Nws tsis tsuas yog muaj kev ntsuas thiab tso saib ua haujlwm, tab sis kuj muaj lub tswb thiab tswj kev ua haujlwm, nrog rau kev teeb tsa, tu, tiv thaiv kev cuam tshuam thiab lwm yam teeb meem.
Kev ua haujlwm ntawm pH meter
1. Economical cwj mem acidity meter dual npo tuaj yeem tso saib qhov kub thiab acidity tus nqi tib lub sijhawm;
2. Kev them nyiaj kub ua haujlwm;
3. Peb-point tsis siv neeg calibration yooj yim rau kev khiav lag luam;
4. Nrog IP67 waterproof muaj nuj nqi;
5. Tsis siv neeg them nyiaj / txheeb xyuas qhov ntsuas kub kom tsis txhob kho qhov yuam kev;
6. Cov ntaub ntawv khaws cia muaj nuj nqi;
7. Tsis siv neeg kaw tuaj yeem nqa tau.
