Puas muaj pH sensor probes hloov zuj zus?
Lub pH dej sensor yog ib qho sensor siv los ntsuas pH tus nqi ntawm cov dej. Nws lub luag haujlwm tseem ceeb yog ntsuas qhov sib piv ntawm hydrogen ions (H +) thiab hydroxyl ions (OH-) hauv dej molecules los txiav txim siab acidity lossis alkalinity ntawm cov dej. pH yog qhov piv ntawm cov concentration ntawm hydrogen ions thiab hydroxyl ions nyob rau hauv ib tug dej molecule, thiab feem ntau yog qhia los ntawm tus lej pH, uas nyob ntawm 0 mus rau 14, nrog ib tug qis pH qhia acidic, thiab ib tug ntau dua pH qhia. alkaline.
Txoj kev loj hlob ntawm pH sensors hnub rov qab mus rau xyoo 1960s. Lub sijhawm ntawd, vim muaj kuab paug ntawm cov dej tsis zoo thiab xav tau kev saib xyuas dej zoo, kev tshawb fawb ntawm pH sensors tau pib. pH tshuaj sensors feem ntau yog ntau yam iav electrodes, hlau-hlau oxide electrodes, ion-selective electrodes thiab (quinone) ammonia quinone electrodes.
Nrog rau kev txhim kho txuas ntxiv ntawm kev tshawb fawb thiab thev naus laus zis, cov tshuaj pH ib txwm nyob hauv ntau qhov chaw tsis tuaj yeem ua tau raws li qhov xav tau, tib neeg pib mob siab rau lawv tus kheej rau kev kawm ntawm cov iav electrodes, kev siv tshuaj hloov kho electrodes yog ib qho ntawm lawv, xws li raws li 8-hydroxyquinoline-5-sulfonic acid hloov kho electrode pH sensor, polyaniline-hloov electrode ultramicro pH sensor, thiab lwm yam.
Tom qab ntawd, nrog kev hloov pauv hauv kev thov, tungsten oxide pH sensor tau tsim, thiab tungsten oxide pH electrode tau npaj los ntawm txoj kev sol-gel, thiab tom qab ntawd lub tungsten oxide pH sensor tau npaj los ntawm tungsten oxide pH electrode nrog cov khoom Ag. /AgCl siv electrode, uas tsis xav tau kev siv tshuaj nrog cov diaphragm ceramic.
Txhawm rau txo qhov loj ntawm pH sensor thiab txhim kho kev tiv thaiv hluav taws xob cuam tshuam kev ua haujlwm, ib qho pH optical sensor tau tsim, uas yog tsim los ntawm photoelectric hloov dua siab tshiab thiab siv qhov zoo ntawm cov cuab yeej uas pH hloov nrog cov khoom siv kho qhov muag ntawm cov yeeb yaj kiab protonated permeable.
Xyoo 2006, ib hom tshiab ntawm tag nrho cov khoom sib xyaw pH sensor rau kev txiav txim ncaj qha ntawm pH ntawm qhov chaw thiab sab hauv ntawm cov khib nyiab, semi-solids thiab pastes tau tsim, muaj peev xwm ntawm kev ntsuas ncaj qha, hauv qhov chaw thiab tsis muaj kev puas tsuaj.
Txhawm rau txhim kho qhov kub thiab txias thiab lub sij hawm drift yam ntxwv ntawm pH sensors, ion-sensitive field effect tube (ISFET) hom pH sensor siv silicon bonded SOI khoom raws li substrate tau tsim. Txhawm rau ua kom tau raws li qhov xav tau ntawm cov chaw sib txawv thiab kev siv, peb tau tsim cov kuab tshuaj polymerisation membrane pH sensors, kub kub resistant tshuaj tua kab mob pH sensors, Rosemount Analytical tus tshiab RB sensors, thiab hais txog.
Yushan cov pH sensors siv lub neej ntev kev lag luam hauv-kab electrodes kom raug thiab ruaj khov. Lub built-in kub sensor tso cai rau tsis siv neeg kub them nyiaj. Yushan cov pH sensors nrog IP68 tiv thaiv qib thiab corrosion-resistant vaj tse yog haum rau ntau yam hnyav ua hauj lwm ib puag ncig: pa dej nto, dub tsw ntxhiab, dej tsis muaj conductivity, seawater aquaculture thiab hais txog.
