Emec MAX5 - Instrument Calibration; pH Calibration Procedure; pH 1 st Point Calibration; pH 2 nd Point Calibration

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Calibration.
From setup menu (g.3) rotate wheel to highlight “Calibration” then press wheel. Again rotate wheel until to reach desired
calibration measure pH - Cl2 - mV - NTU and Temperature.
pH Calibration.
pH calibration procedure involves two calibration points and it requires two buffer solutions. Default buffer solutions are
pH 4.00 and pH 7.00. pH reading value can be also automatically temperature compensated.
In the following example instrument will calibrate pH using default buffer solutions value.
This procedure assumes that instrument is correctly congured and a working pH probe connected.
Otherwise unattended results may occurr.
Calib 1st Point.
Once into “Calibration pH” menu move wheel on “Calib 1st Pt” then press wheel to enter into rst point calibration
submenu. Prepare 7.00pH buffer solution and dip probe’s sensor on it. Wait until reading value is stable and according
to buffer solution value move wheel until it is the same on display (“pH default” eld). Default value is 7.00pH. To end
procedure move cursor on “OK” and press wheel to proceed to next step.
Note: buffer solution value may change if environment temperature it’s different than 20°C. Read solution’s label for more
information. According to this occurrence “pH Default” must be changed.
Calib 2nd Point.
Move wheel on “Calib 2nd Pt” then press wheel to enter into second point calibration submenu. Prepare 4.00pH buffer
solution and dip probe’s sensor on it. Wait until reading value is stable and according to buffer solution value move
wheel until it is the same on display (“pH default” eld). Default value is 4.00pH. To end procedure move cursor on “OK”
g. 11
g. 12