Qhov tseeb ntawm acidity meter thiab PH meter
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 (lub ntsuas hluav taws xob luv luv), piv txwv li: ib qho cuab yeej nrog kev faib ntawm {{0}}.1pH hu ua 0.1-level instrument; qhov tsawg kawg nkaus tso saib tus nqi yog 0.0{{10}}1pH Cov twj paj nruag hu ua chav kawm 0.001 cov twj paj nruag, 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 qhov yuav tsum tau siv tiag tiag, qhov tam sim no faib tus nqi ntawm lub ntsuas hluav taws xob yog 0.1 ~ 0.001pH. Yog tias tsim nyog, lub ntsuas hluav taws xob ntau dua tuaj yeem tsim tau raws li qib thev naus laus zis tam sim no. 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 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 tau raws li qhov tseeb, nws yog ib qho kev txhim kho thiab txhim kho tas li ntawm kev txawj ntse, humanization, kev ntseeg siab, kev ua haujlwm yooj yim thiab cov nqi ntawm qhov ntsuas. Lub pHS-4C ntxiv thiab lwm yam "plus" cov twj paj nruag uas tsim los ntawm Chengdu Ark Technology Development Co., Ltd. muaj kev cuam tshuam txog qhov no.
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 (JJG 119-84) raws li hauv qab no:
Cov cuab yeej qib {{0}}.2 qib 0.1 qib 0.02 qib 0.01 qib 0.001 qib
Tus nqi kawm tiav lossis tus nqi qis tshaj (pH) 0 2 0 1 0 02 0 01 0.001
Electrometer qhia yuam kev (pH) ±{{0}}.1 ±{4}}05 ±0.01 ±0.01 ±0.002
Tag nrho qhov yuam kev ntawm kev txhawb nqa qhov ntsuas ntsuas (pH) ±{{0}}.2 ±0.1 ±002 ±0.02 ±0.01
Nco tseg: Qhov kev sim ntau yam ntawm kev txhawb nqa yuav tsum tswj tsis pub dhau pH3-pH10.
Nws tuaj yeem pom los ntawm cov saum toj no uas rau cov ntsuas acidity hauv qab ntawm {{0}}}01 qib, tag nrho cov nqi yuam kev ntawm qhov taw qhia yog sib npaug rau nws qib; rau lub ntsuas acidity ntawm qib 0.01, 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 yuav tsum tau siv cov khoom siv pH zoo tshaj plaws kom tau lees paub. (Ceeb toom: Cov khoom siv pH hauv teb chaws tau muab faib ua ob hom: ** thiab theem nrab. Feem ntau, pH meter feem ntau siv yog cov khoom siv pH thib ob.
Dab tsi kuj yuav tsum tau piav qhia yog vim li cas qhov kev ntsuas pH3 ~ pH1 0 yuav tsum tau teev tseg rau kev kuaj pom tag nrho qhov yuam kev ntawm qhov ntsuas ntsuas tus nqi? Nws yog vim hais tias cov kua hlws ris muaj peev xwm ntawm cov siv electrode muaj feem xyuam rau pH ntawm cov tshuaj. Lub peev xwm ua kua sib txuas tuaj yeem ruaj khov hauv thaj tsam ntawm ± 0.01pH hauv thaj tsam ntawm pH3 ~ pH10. Yog 10
