Hanna-instruments HI 3220 Manual de usuario descargar pdf (Pagina 16)

• Press CAL. The instrument will display the measured pH, the LCD first

expected buffer and the temperature reading.

• If necessary, press the ARROW keys to select a different buffer value.

• The “ ” tag will blink on the LCD until the reading is stable.

• When the reading is stable and close to the selected buffer, Confirm

function key is displayed.

• Press Confirm to confirm first point.

• The calibrated value and the second expected buffer value is then dis-

played on the LCD.

• After the first calibration point is confirmed, immerse the pH electrode and

the temperature probe approximately 3 cm (1¾”) into the second buffer

solution and stir gently. The temperature probe should be close to the pH

electrode.

• If necessary, press the ARROW keys to select a different buffer value.

• The “ ” tag will blink on the LCD until the reading is stable.

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Hanna-instruments HI 3220 Manual de usuario Pagina 16