Hanna Instruments HI 98188 Instruction Manual page 30

• After the fourth calibration point is confirmed, immerse the EC electrode into the
fifth standard solution and stir gently.
• 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 values and returns to normal mea-
surement mode.
FOUR, THREE or TWO-POINT CALIBRATION
• Proceed as described in "FIVE-POINT CALIBRATION" section.
• Press CAL or ESC after the appropriate accepted calibration point. The instru-
ments will return to measurement mode and will memorize the calibration data.
ERROR SCREENS
Wrong standard
The calibration cannot be confirmed.
The EC reading is not close to the selected standard. Select another standard
using the ARROW keys.
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