Siv, tu thiab tu ntawm pH electrode
1, kev siv pH electrode
Tam sim no, feem ntau ntawm pH meter electrodes siv hauv chav kuaj yog cov khoom siv hluav taws xob sib xyaw. Nws qhov zoo yog kev siv yooj yim, tsis muaj kev cuam tshuam ntawm oxidation-txo tshuaj, thiab kev sib npaug ceev ceev. Kev saib xyuas yuav tsum tau them rau cov khoom hauv qab no thaum siv:
(1) Thaum siv, lub tes tsho roj hmab thiab lub tes tsho roj hmab ntawm qhov qis kawg ntawm pH electrode yuav tsum raug tshem tawm tag nrho kom tsis txhob muaj qhov sib txawv ntawm cov tshuaj potassium chloride hauv cov electrode. Tshawb xyuas lub teeb ntawm qhov kawg ntawm lub iav electrode ua ntej siv. Raws li ib txwm muaj, lub electrode yuav tsum yog pob tshab thiab tawg-dawb, thiab lub teeb yuav tsum tau ntim nrog cov tshuaj, thiab tsis muaj npuas yuav tshwm sim.
(2) Feem ntau, ob-point calibration yog saws, nrog rau 6.86pH () raws li thawj point thiab 4.00pH () los yog 9.18() pH raws li qhov thib ob point (nco ntsoov tias tus nqi calibration yuav tsum ua raws li tus qauv tus nqi ntawm cov qauv kev daws teeb meem ntawm qhov ntsuas qhov ntsuas qhov tseeb). Ua kom tus nqi pH ruaj khov li sai tau thaum lub sijhawm ntsuas ntsuas, thiab tom qab ntawd nias tus yuam sij Enter.
(3) Feem ntau, thaum qhov kev ua tau zoo ntawm pH electrode yog qhov zoo, txoj kab nqes tom qab calibration yog siab dua 98 feem pua, thiab qhov kev ua tau zoo me ntsis txo los ntawm ntau dua 95 feem pua. Yog tias nws qis dua 90 feem pua, nws raug nquahu kom hloov cov electrode.
(4) Nyob rau hauv lub xeev calibration, qhov qeeb thiab tsis ruaj tsis khov cov tshuaj tiv thaiv yog lub embodiment ntawm poob ntawm pH electrode kev ua tau zoo.
(5) Lub 5) pH sib xyaw electrode tsis haum rau ntsuas cov organic teeb meem, roj, viscosity thiab lwm yam khoom.
(6) Thaum siv 6) pH sib xyaw electrode, kev siv sab nraud yog qhov teeb meem feem ntau. Lub ntsiab yog vim li cas rau qhov yuam kev yog cov kua hlws ris ntawm cov electrode thiab cov blockage ntawm cov kua hlws ris.
(7) Thaum ntsuas tus nqi ntawm cov tshuaj nrog pH electrode, nws yuav tsum tau nplawm tag nrho, txwv tsis pub cov tshuaj tiv thaiv yuav qeeb.
(8) Thaum lub caij ntuj no, thaum qhov kub thiab txias mus txog qhov chaw khov, pH electrode tsis tuaj yeem siv, uas yog qhov ua rau txias tawg. Nws raug nquahu kom siv nws saum toj no.
2. Kev saib xyuas ntawm pH electrode
(1) Cov khoom sib txuas thiab cov sockets txuas nrog pH electrodes yuav tsum tau ceev kom huv si thiab qhuav, tsis muaj kuab paug, thiab xyuas kom muaj kev sib cuag zoo. Thaum muaj kev ua qias tuaj, 99 feem pua ntawm cov cawv tuaj yeem siv los so lawv.
(2) Cov pH electrode siv thawj zaug (tsis muaj tshuaj nyob rau hauv sheath) los yog nres rau lub sij hawm ntev yuav tsum tau soaked nyob rau hauv 3mol / L poov tshuaj chloride tov rau 24 teev ua ntej siv.
(3) Thaum ntsuas cov tshuaj nrog cov concentration loj, txo lub sij hawm ntsuas kom deb li deb tau, thiab ua tib zoo ntxuav nws tom qab siv los tiv thaiv kev ntsuas los ntawm adhering rau pH electrode thiab ua paug cov electrode.
(4) Cov electrode yuav tsum tsis txhob muab tso rau hauv dej distilled, cov kua protein thiab kua qaub fluoride rau lub sijhawm ntev, thiab cov electrode yuav tsum tsis txhob sib cuag nrog cov roj silicone.
(5) Tom qab kev ntsuas, pH electrode yuav tsum tau muab tso rau hauv lub sheath uas muaj cov tshuaj potassium chloride, thiab cov tshuaj potassium chloride hauv cov pas nrig electrode yuav tsum tau soj ntsuam ntau zaus, thiab nws yuav tsum tau muab ntxiv rau lub sijhawm, feem ntau tsis tsawg tshaj li ib nrab. Txuas lub ntsaws sab sauv thaum nws tsis ntsuas.
