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9. “Probe Calibration”, pH
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 30°C temperature compensated from “pH compensation” menu.
From “Menu Calibration” choose “pH probe”.
In the following example instrument will calibrate pH using default buffer solutions values.
Note: this procedure assumes that instrument is correctly confi gured and a working pH probe connected.
Otherwise unattended results may occurr.
Calib 1st Point.
Once into “pH Calibration” menu move wheel on “P1” then press wheel to enter into
fi
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 (“Cal. at”
fi
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.
pH7
Power Supply calibration ?
To obtain the most reliable results during pulses calculation is possible to calibrate power supply read value. Press wheel on “P1” then move curso on “OK” and
con
fi
rm power supply read value. (e.g.: 230V).
Summary of Contents for Micromaster WDPHCL-ECL6
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