Calibration ntawm pH meter siv cov tshuaj tsis haum
Kho lub pH meter nrog ib qho kev daws teeb meem kom txog thaum lub ntsuas pH raug nyeem cov nqi ntawm cov tshuaj. Koj tuaj yeem calibrate nws raws li cov hauv qab no.
(1) Npaj ob 200mL huv beakers rau ntxuav lub sensor nrog dej distilled, pH 4 thiab pH 7 tsis daws teeb meem, thiab ib tug pas ntsuas kub rau ntsuas qhov kub ntawm cov tshuaj tsis.
(2) Ncuav 50-100mL ntawm cov tshuaj buffer nrog pH 4 thiab pH 7 rau hauv beakers, feem.
(3) Tshem tawm lub sensor ntawm lub bracket. Yog hais tias lub sensor yog ntsia rau hauv ib tug immersion bracket, tshem tawm lub sensor bracket thiab tiv thaiv tiv thaiv ua ke los ntawm lub immersion bracket.
(4) Ntxuav lub sensor electrode, so cov tee dej nrog cov paj rwb degreasing, thiab muab cov electrode tso rau hauv ib qho kev daws teeb meem nrog pH =7.
(5) Tus nqi pH ntawm cov tshuaj tsis sib txawv nrog qhov kub thiab txias. Ntsuas qhov kub ntawm pH =7 tsis muaj tshuaj thiab sib piv cov ntsuas ntsuas.
(6) Tig lub STD (calibration function key) clockwise los yog counterclockwise kom txog rau thaum pH transmitter qhia tus nqi tib yam li ntsuas nyob rau hauv kauj ruam (5).
(7) Ua kom tiav cov tshuaj pH 7 los ntawm cov electrode thiab muab cov electrode tso rau hauv cov tshuaj pH 4 tsis haum.
(8) Ntsuas qhov kub ntawm pH 4 tov thiab sib piv cov ntsuas ntsuas.
(9) Kho SLOPE (electrode teb nqes hav) kom txog rau thaum pH transmitter qhia tib tus nqi raws li ntsuas hauv qib (5).
(10) Rov ua cov kauj ruam (4) txog (6) kom txog thaum pH transmitter qhia tus nqi raug. Yog hais tias tus nqi pH raug nyeem, qhov ntsuas ntawm qhov kev daws teeb meem tsis tiav.
