Hanna Instruments HI 98180 - Manual (Page 29)

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• Press CFM to confirm calibration.
• The calibrated value and the fourth expected standard value will be
displayed.
• After the third calibration point is confirmed, immerse the ISE electrode
approximately 4 cm (1½”) into the fourth calibration solution.
• 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
functional key is displayed.
• Press CFM to confirm calibration.
• The calibrated value and the fifth expected standard value will be dis-
played.
• After the fourth calibration point is confirmed, immerse the ISE electrode
approximately 4 cm (1½”) into the fifth calibration solution.
• 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
functional key is displayed.
• Press CFM to confirm calibration. The instrument stores the calibration value
and returns to normal measurement mode.
Note: The instrument will automatically skip the standard solutions used
during calibration
FOUR, THREE, TWO or ONE-POINT CALIBRATION
• Proceed as described in “FIVE-POINT CALIBRATION” section.
• Press
ESC or CAL key after the appropriate accepted calibration point. The
instruments will return to measurement mode and will memorize the calibration
data.
ERROR SCREENS
Wrong standard
The calibration cannot be confirmed.
The message appears if mV input is out of ±2000 mV range.