Electrode Kev Npaj rau Kev Ntsuas Dej Ntsuas ntawm Portable Dissolved Oxygen Meter
1. Electrode npaj rau cov qauv dej txiav txim siab portable yaj oxygen meter
Tag nrho cov khoom tshiab uas tau yuav yaj cov pa oxygen probes qhuav, thiab yuav tsum tau ntim nrog electrode filling tov ua ntej siv, thiab tom qab ntawd txuas nrog lub ntsuas. Cov kauj ruam kev sib txuas yog raws li nram no:
① Sib sau cov electrode raws li phau ntawv ntsuas.
② Ntxiv electrode filling tov rau electrode.
③ Maj mam tig zaj duab xis rau ntawm electrode.
④ Coj mus rhaub rau ntawm ntug ntawm lub electrode nrog koj lub ntsis ntiv tes kom paub tseeb tias tsis muaj cua npuas hauv electrode. Txhawm rau kom tsis txhob muaj kev puas tsuaj rau zaj duab xis, tsis txhob coj mus rhaub hauv qab ntawm zaj duab xis ncaj qha.
⑤ Nco ntsoov tias cov roj hmab O-ring tau raug muab tso rau hauv lub diaphragm npog.
⑥ Nrog lub sensor tig mus, tig lub membrane npog clockwise, thiab qee cov electrolyte yuav dhau. Thaum tsis siv, muab tso rau ntawm qhov chaw tiv thaiv zaj duab xis.
2. Portable yaj oxygen meter dej qauv txiav txim electrode polarization calibration txheej txheem
Cov electrodes tau polarized ntawm lub zog ntawm qhov ruaj khov ntawm kwv yees li 800 mV. Electrode polarization yog qhov tseem ceeb rau kev rov tsim dua ntawm cov txiaj ntsig ntsuas. Nrog rau cov electrodes kom zoo polarized, cov pa oxygen dhau los ntawm lub sensor membrane yuav yaj hauv cov electrolyte hauv cov electrodes thiab tau noj tas li. Yog tias cov txheej txheem polarization cuam tshuam, cov pa oxygen hauv electrolyte yuav nce ntxiv mus txog thaum nws nce mus txog qhov sib npaug nrog cov pa oxygen yaj hauv cov tshuaj sab nraud, yog tias siv cov electrode tsis muaj polarized, qhov ntsuas tus nqi yuav yog qhov sib npaug ntawm cov pa oxygen nyob rau sab nraud. kua thiab cov kuab tshuaj nyob rau hauv cov electrolyte, qhov tshwm sim yog tsis ncaj ncees lawm. Thaum polarizing lub electrode, npog lub hau dawb yas tiv thaiv (tshem tawm thaum lub sij hawm calibration thiab ntsuas).
① Nias ON/OFF kom qhib lub twj paj nruag.
② Tsab ntawv "COND" tshwm rau ntawm cov zaub, qhia tias cov electrode tau hloov kho (polarized).
③ Tos li 20 feeb kom ntseeg tau tias cov electrodes ruaj khov.
④ Lub ntsuas yuav cia li polarize nws tus kheej mus rau qhov tseeb saturation tus nqi. Tom qab kwv yees li 1 feeb, cov zaub yuav tso tawm "100 feem pua" thiab cov cim me me "SAMPLE", qhia tias qhov polarization calibration tiav lawm. CEEB TOOM: Nco ntsoov rov ua qhov polarization calibration thaum twg cov electrode, membrane, lossis electrolyte hloov.
⑤ Yog tias koj xav tawm ntawm hom calibration thaum lub sij hawm calibration txheej txheem, cia li nias tus yuam sij CAL dua.
⑥ Nias tus yuam sij RANGE los hloov qhov ntsuas los ntawm saturation feem pua (%) mus rau mg/L xeev (tsis tas yuav rov ntsuas dua).
