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Salinity
The measurement of salinity is based on the Practical Salinity Scale which uses the EC measurement.
If the user has a standard with known PSU value it may be used to calibrate the conductivity sensor.
• Select “Salinity” from the “Conductivity calibration” menu.
• Use the keypad to enter the known salinity value of the
calibration solution. Press <Accept> to confirm.
• Fill the calibration beaker with salinity standard of known
value.
• Pour additional standard into a second beaker to be used to rinse the sensor.
• Immerse the sensor into the rinse beaker and raise and lower the beaker to ensure that the EC
sensor channels are filled with fresh standard.
• Place the calibration beaker with standard over the EC sensor and dislodge any trapped gas bubbles.
Screw the beaker into place.
• Wait for the reading to stabilize. The stability timer will count down and <Confirm> will appear.
• Note the temperature and adjust the salinity value if needed.
• Press <Confirm> to save the calibration.
• After confirmation, the following messages are displayed: “Storing” and “Calibration com‑
pleted”.
• Press <OK> to return to the “Calibration” menu.
• Press ESC twice to return to the main menu.
• Press <Measure> to return to the measurement screen.
• Note the temperature and adjust the conductivity value if needed.
• Press <Confirm> to save the calibration.
• After confirmation, the following messages are displayed: “Storing” and “Calibration completed”.
• Press <OK> to return to the “Calibration” menu.
• Press ESC twice to return to the main menu.
• Press <Measure> to return to the measurement screen.
CONDUCTIVITY CALIBRATION
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