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Offset Calibration
• To perform the EC calibration enter the calibration
mode, by pressing CAL and entering the password.
• After the correct password is entered, the control
actions stop and the primary LCD will display the first
calibration value, with the “CAL” indicator blinking.
The secondary LCD displays the temperature.
Note
If the wrong password is entered the system reverts
back to normal operation, displaying EC values.
• 0 is the default value for the 1
st
calibration point. Dry the conductivity probe and
leave it in air.
• Only when the reading is stable the “CAL” indicator
will stop flashing (after about 30 seconds) and the
“READY” and “CFM” indicators will start blinking.
• Press CFM to confirm the calibration point; the primary
LCD will display the second expected buffer value.
If the zero calibration cannot be performed,
“ERROR” will blink.
Cell constant calibration
• Select the solution value on the primary
display by pressing
or
if the selected
range has two possibilities (e.g. 5.000 and
12.880 mS).
• Immerse the EC/TDS probe with the temperature sensor in the selected solution. The
level of solution must be higher than the holes of the probe sleeve. Tap the probe
repeatedly on the bottom of the beaker and stir to ensure that no air bubbles are
trapped inside the sleeve.
• When the reading is stable, “CAL” will stop flashing
(after about 30 seconds) and the “READY” and
“CFM” indicators will blink.
• Press CFM to confirm the calibration point; if the
reading is close to the selected solution, the meter
stores the reading.
If the reading is not close to the selected solution,
“ERROR” will blink.
