Hanna Instruments HI 98188 - Manual (Page 27)

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• From EC range press CAL to enter calibration screen.
• Leave the probe in the air and press EC. The instrument will display the
measured EC on the LCD, first expected standard and the temperature reading.
• If necessary, press the ARROW keys to select a different standard value.
• The “ ” tag will blink on the LCD until the reading is stable.
• When the reading is stable and close to the selected buffer, CFM functional
key is displayed.
• Press CFM to confirm first point.
• The calibrated value and the second expected standard value is then
displayed on the LCD.
• After the first calibration point is confirmed, immerse the EC electrode into the
second standard solution and stir gently. Tap the probe repeatedly to
remove any air bubbles that may be trapped inside the sleeve. The
instrument will automatically detect the standard after few seconds the
reading is stable.
• If necessary, press the ARROW keys to select a different standard value.
• The “ ” tag will blink on the LCD until the reading is stable.
• When the reading is stable and close to the selected standard, the CFM