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• Press CAL from EC range to enter calibration mode.
• 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, Confirm
functional key is displayed.
• Press Confirm 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
Confirm functional key is displayed.
• Press Confirm to confirm calibration.
ERROR SCREENS
Wrong standard
The calibration cannot be confirmed.
The EC reading is not close to the selected standard or the temperature
is out of the 0 - 60 °C window. Select another standard using the
ARROW keys or change the temperature value.
CLEAR CALIBRATION
Press Clear functional key when displayed to clear old calibrations.
All old calibrations, are cleared and the instrument returns to measurement
mode.
NaCl CALIBRATION
NaCl calibration is a one-point procedure in 100.0% NaCl solution. Use
the HI 7037L calibration solution (sea water solution) as a 100% NaCl
standard solution.
• To enter NaCl calibration select the Salinity % range and press CAL.
• The measured % NaCl, the temperature and the 100% NaCl
standard are displayed.
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