Kev faib tawm thiab ntsuas qhov tseeb ntawm pH ntsuas
Raws li kev xav tau ntawm kev tsim khoom thiab lub neej, tib neeg tau tshawb fawb thiab tsim ntau hom acidity meters:
Raws li kev ntsuas qhov tseeb
Nws tuaj yeem muab faib ua {{0}}.2 qib, 0.1 qib, 0.01 qib lossis siab dua.
Los ntawm instrument volume
Nws tau muab faib ua hom cwj mem (hom mini), hom portable, hom duab thiab hom online rau kev saib xyuas thiab ntsuas hauv online.
Raws li cov kev xav tau ntawm kev siv
cwj mem (me me) thiab portable pH pH meters feem ntau yog siv los ntawm cov neeg soj ntsuam coj lawv mus rau qhov chaw kuaj xyuas.
Cov qib raug ntawm pH meter raug xaiv raws li qhov tseeb uas tus neeg siv yuav tsum tau ntsuas, thiab tom qab ntawd ntau cov duab ntawm pH ntsuas raug xaiv raws li qhov yooj yim ntawm tus neeg siv.
◆ Raws li kev txav mus los, nws tuaj yeem muab faib ua: portable pH meter, desktop pH meter thiab cwj mem pH meter.
◆ Raws li lub hom phiaj, nws tau muab faib ua: chav kuaj pH meter, kev lag luam hauv online pH meter, thiab lwm yam.
◆ Raws li qib siab, nws tuaj yeem muab faib ua pH meter, ntse pH meter, precision pH meter lossis pointer pH meter thiab digital pH meter.
◆ cwj mem-hom pH meter feem ntau ua rau hauv ib qho kev ntsuas ib zaug, thiab qhov ntsuas qhov nqaim. Nws yog ib qho cuab yeej tshwj xeeb thiab yooj yim.
Portable thiab desktop pH meters muaj ntau yam kev ntsuas thiab feem ntau siv cov twj paj nruag. Qhov txawv yog tias lub portable yog siv los ntawm DC thiab tuaj yeem nqa mus rau qhov chaw. Lub chaw kuaj pH meter muaj qhov ntsuas dav dav, ntau lub zog thiab ntsuas qhov tseeb.
Kev lag luam pH meter yog tus cwj pwm los ntawm kev ruaj ntseg zoo, kev lag luam txhim khu kev qha, qee qhov kev ntsuas qhov tseeb, muaj zog ib puag ncig hloov kho, muaj peev xwm tiv thaiv kev cuam tshuam, thiab muaj cov txiaj ntsig analog tawm, kev sib txuas lus digital, sab sauv thiab qis qis thiab tswj kev ua haujlwm.
qib raug
Cov qib ntawm acidity meter thiab qhov tseeb ntawm cov cuab yeej yog ob lub ntsiab lus sib txawv, thiab qib ntawm cov cuab yeej tsis ua tiav nrog nws qhov tseeb. Cov qib ntawm acidity meter yog qhia raws li tus nqi faib (kev daws teeb meem los yog qhov tsawg kawg nkaus zaub tus nqi) ntawm nws qhov taw qhia (xa mus rau lub ntsuas hluav taws xob), piv txwv li: ib qho cuab yeej nrog kev faib ntawm {{0}} .1pH hu ua 0 1-qib ntsuas; qhov tsawg kawg nkaus tso saib tus nqi yog 0.001pH Cov twj paj nruag hu ua chav kawm 0.001 instruments, thiab lwm yam. Qhov tseeb ntawm qhov ntsuas yog qhov ua yuam kev ntawm lub tshuab hluav taws xob thiab cov khoom siv hluav taws xob sib piv cov qauv ntsuas kev daws teeb meem, uas tsis yog tsuas yog cuam tshuam nrog lub ntsuas hluav taws xob, tab sis kuj tseem cuam tshuam nrog cov iav electrode thiab cov khoom siv electrode. Pib los ntawm kev siv tiag tiag, tus nqi faib ntawm lub tshuab hluav taws xob yog 0.1 ~ 0.001pH. Yog tias tsim nyog, lub tshuab hluav taws xob ntau dua tuaj yeem tsim tau raws li qib tam sim no ntawm kev siv tshuab. Txawm li cas los xij, vim yog cov qauv tsim thiab tsim khoom, kev ua haujlwm ntawm cov khoom siv electrodes feem ntau tsis tuaj yeem ncav cuag qib zoo tagnrho.
Tsis yog qhov yuam kev rov ua dua ntawm cov iav electrode los yog qhov kev ruaj ntseg ntawm cov kev daws teeb meem ntawm cov khoom siv electrode zoo dua li {{0}}.01pH. Yog li, txawm tias qhov kev daws teeb meem ntawm lub tshuab electrometer siab npaum li cas, qhov ntsuas qhov tseeb ntawm qhov ntsuas yog qhov nyuaj kom zoo dua 0.01pH. Txawm li cas los xij, xaiv qhov ntsuas ntsuas siab tuaj yeem kov yeej lossis tshem tawm qhov cuam tshuam ntawm lub ntsuas hluav taws xob ntawm qhov ntsuas qhov yuam kev mus rau qhov loj tshaj plaws. Txij li thaum nws tsis yog ib qho teeb meem los ua kom lub ntsuas hluav taws xob ua tiav qhov tseeb txaus, nws tseem niaj hnub tsim kho tshiab thiab txhim kho cov kev txawj ntse, humanization, kev ntseeg siab, kev ua haujlwm yooj yim thiab cov nqi ntawm qhov ntsuas. Kev sib raug zoo ntawm qib ntawm acidity meter thiab nws qhov ntsuas qhov tseeb yog teev nyob rau hauv National Measurement and Verification Regulations for the acidity meter (JJG119-84) raws li nram no:
PH acidity ntsuas ntsuas ntsuas theem {{0}}.2, 0.1, 0 02, 0.01, 0.001
Tus nqi kawm tiav lossis tus nqi qis tshaj (pH) {{0}}.2, 0.1, 0.02, 0.01, 0.001
'meter' qhia yuam kev (pH) ±{{0}}.1, ±{4}}.05, ±0.01, ±0.01, ±0.002
Txhawb kev ntsuas qhov ntsuas tag nrho yuam kev (pH) ±{{0}}.2, ±0.1, ±0.02, ±0.02, ±0.01
Nco tseg: Qhov ntsuas qhov ntsuas ntawm kev txhawb nqa yuav tsum tswj tsis pub dhau pH{0}}pH10. Nws tuaj yeem pom los ntawm cov lus saum toj no uas rau cov ntsuas acidity hauv qab no 0.01 qib, tag nrho cov nqi yuam kev ntawm qhov qhia yog sib npaug rau nws qib; rau lub ntsuas acidity ntawm 0.01 qib, tag nrho qhov yuam kev ntawm qhov taw qhia tus nqi yog 0.02pH; Nws tsuas tuaj yeem ncav cuag ± 0.01pH, thiab lub sijhawm no, nws yog ib qho tsim nyog yuav tsum siv cov khoom siv pH thawj coj los lav. (Faj seeb: Muaj ob hom pH hauv teb chaws cov khoom siv, thawj thiab theem nrab. Feem ntau, pH meter feem ntau siv yog cov khoom siv pH thib ob.)
