Taw qhia rau pH Meter Calibration
1. Hloov cov txheej txheem kev daws teeb meem nrog pH qhov tseem ceeb ntawm 4.01, 7.00, thiab 10.01 los ntxuav thiab qhuav 50mL me beakers.
2. Nias lub hwj huam khawm kom qhib lub ntsuas pH, yaug cov electrodes kom huv si, qhuav lawv nrog plua plav-dawb ntawv, thiab muab tso rau hauv ib qho kev daws teeb meem nrog pH ntawm 4.01. Nias lub khawm "calibrate" mus rau CAL.1 interface, tos rau kev nyeem ntawv kom ruaj khov thiab tus cursor nyob rau hauv pem hauv ntej ntawm kev nyeem ntawv kom flash, ces nias lub khawm "tus lej hloov" txhawm rau kho pH meter nyeem ntawv rau pH tus nqi ntawm cov qauv kev daws teeb meem. Tom qab ntawd nias lub pob "calibrate" kom nkag mus rau CAL.2 interface.
3. Yaug lub electrode kom huv si thiab qhuav nws nrog cov plua plav-dawb daim ntawv, ces muab tso rau hauv ib tug txheej txheem buffer tov nrog pH ntawm 7.00. Tos kom qhov kev nyeem ntawv ruaj khov thiab tus cursor nyob rau hauv pem hauv ntej ntawm kev nyeem ntawv kom flash. Nias lub pob "Number Edit" los kho cov pH meter nyeem ntawv rau pH tus nqi ntawm cov qauv kev daws teeb meem. Tom qab ntawd nias lub pob "calibrate" kom nkag mus rau CAL.3 interface.
4. Yaug cov electrode kom huv si thiab qhuav nws nrog cov plua plav-dawb daim ntawv, ces muab tso rau hauv cov txheej txheem buffer tov nrog pH ntawm 10.01. Tos kom qhov kev nyeem ntawv ruaj khov thiab tus cursor nyob rau hauv pem hauv ntej ntawm kev nyeem ntawv kom flash. Nias lub pob "Number Edit" los kho cov pH meter nyeem ntawv rau pH tus nqi ntawm cov qauv kev daws teeb meem.
5. Nias lub khawm "ntsuas txuag/luam" kom txuag tau qhov txiaj ntsig calibration thiab tau txais txoj kab nqes ntawm txoj kab ncaj nraim tom qab peb -point calibration. Yog hais tias txoj kab nqes ntawm txoj kab ncaj nraim yog nyob rau hauv thaj tsam ntawm 100 ± 3 thiab pH qhov tseem ceeb ntawm lwm qhov kev daws teeb meem tsis zoo nyob hauv thaj tsam ntawm ± 0.3, ces qhov kev ntsuas no siv tau. Txwv tsis pub, yuav tsum tau recalibration.
6. Tom qab siv cov txheej txheem buffer tov, muab nws nrog lub sealing zaj duab xis thiab muab tso rau hauv qhov chaw qhuav rau ntau yam kev siv.
Thaum tus nqi pH ntawm cov tshuaj ntsuas nyob rau hauv ib qho me me (xws li 3-8), tsuas yog ob qhov kev daws teeb meem tsis zoo nrog pH qhov tseem ceeb ntawm 4.01 thiab 7.00 tuaj yeem siv rau kev ntsuas.
Tom qab calibration, yog tias lub ntsuas pH nquag siv, ntsuas nws txhua 2 hnub. Yog tias muaj cov xwm txheej hauv qab no tshwm sim, pH meter yuav tsum tau rov ua dua:
(1) Thaum cov electrode raug huab cua ntev dhau lawm, xws li ntau tshaj li ib nrab teev.
(2) Tom qab ntsuas cov kua qaub (pH<2) or alkali (pH<12).
(3) Tom qab hloov cov electrodes.
