Hanna Instruments HI 2300 - Manual (Page 26)

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• Use the ARROW keys to set the reading on the secondary LCD to
that of the hot water.
• When the reading is stable and close to the selected
calibration point, the “ CFM” tag will blink.
• Press CFM to confirm. The instrument memorize
calibration and restart in measurement mode.
Note: If the reading is not close to the selected calibration point,
“ WRONG” tag will blink. Change the EC probe and restart
calibration.