Kev tshuaj xyuas thiab tshem tawm cov kev ua txhaum ntawm PH meter
Hauv kev ua haujlwm, kev laus ntawm cov khoom siv, cov txheej txheem ua haujlwm tsis raug thiab tsis ruaj khov ntawm cov khoom siv hluav taws xob yuav ua rau PHS tsis ua haujlwm -3BS pH meter, uas yuav ua rau muaj teeb meem kom tau txais cov ntaub ntawv saib xyuas cov kua qaub los nag. Nws yog ib qho tsim nyog rau cov neeg soj ntsuam kuaj xyuas thiab txheeb xyuas qhov ua tsis tiav hauv lub sijhawm thiab raug, txhawm rau ua kom muaj kev txhim kho ib txwm muaj ntawm cov kua qaub nag kev soj ntsuam kev lag luam.
(1) Lub tshuab hluav taws xob tau qhib, tab sis qhov ua tau thiab cov txheej txheem kho tsis tau qhia:
A. lub fuse tawg thiab yuav tsum tau hloov;
B. Yog hais tias lub hwj chim mov los yog transformer puas lawm, nws yuav tsum tau kho los yog hloov;
C. yog tias lub ntsuas ntsuas tsis ua haujlwm, nws yuav tsum raug xa mus kho.
(2) Tus nqi pH tsis tuaj yeem hloov kho rau 7. 00 los ntawm "qhov chaw". Yog vim li cas thiab txoj kev kho mob:
A. Thaum cov kua ntxiv ntawm cov khoom electrode dries, ntxiv 3M potassium chloride tov los yog hloov cov electrode;
B. Cov electrode sib xyaw ua tsis tau thiab yuav tsum tau hloov pauv;
C lub potentiometer sab hauv yog tawg thiab yuav tsum tau kho los yog hloov.
(3) Yog tias "txoj kab nqes" tsis tuaj yeem hloov kho rau pH 4.00 lossis pH 9.18, cov laj thawj thiab txoj hauv kev kho mob muaj raws li hauv qab no:
A. Cov khoom siv hluav taws xob muaj hnub nyoog thiab nws qhov kev ua tau zoo yog degraded, yog li nws yuav tsum tau hloov;
B. Lub potentiometer sab hauv yog tawg thiab yuav tsum raug xa mus kho thiab hloov.
(4) Thaum ntsuas 4) pH tus nqi, kev nyeem ntawv tsis ruaj khov, nws muaj peev xwm ua tau thiab txoj kev kho mob:
A. yog tias tus nqi k ntawm cov qauv dej tsawg dhau (piv txwv li qis dua 10μS / cm), lub sij hawm sib npaug yuav tsum raug ncua ntev;
B. Lub sab hauv tsis kam ntawm cov hluav taws xob sib xyaw yog siab dhau, thiab nws lub neej kev pabcuam tau mus txog, yog li nws yuav tsum tau hloov;
C. Yog tias cov khoom siv hluav taws xob sib txuas (lub rooj zaum) ntub dej los yog muaj kuab paug, nws yuav tsum tau so nrog 95 feem pua ntawm cawv tom qab kaw thiab qhuav ua ntej siv;
D. Yog hais tias lub hwj chim mov voltage tsis ruaj tsis khov, los yog lub grounding hlau kov * *, tua lub hwj chim mov thiab welding lub grounding hlau ruaj khov, thiab ces tig lub hwj chim mov rau kev ntsuas tom qab qhov voltage yog ruaj khov.
(5) Thaum lub sij hawm "tsis siv neeg" nyiaj them, tus naj npawb overflows los yog tus nqi tso tawm tsis ruaj khov, cov laj thawj thiab txoj kev kho mob:
A. Lub ntsuas kub ntsuas ntsuas tsis txuas lossis tawg, yog li nws yuav tsum tau txuas lossis hloov pauv;
B qhov kub thiab txias selector hloov pauv tau tawg thiab yuav tsum raug xa mus kho lossis hloov;
C. Qhov kev sib txuas sab hauv ntawm qhov ntsuas kub ntsuas yuav tsum raug xa mus kho;
D. Yog tias qhov ntsuas ntsuas tsis ua haujlwm, nws yuav tsum raug xa mus kho.
