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CALIBRATION
8. The stability counter will count down until the display shows the “Ready” message.
9. Press Confirm to save the calibration. The message “Storing” followed by “Calibration
completed” messages will be displayed.
10. Press OK to return to the calibration menu or Measure to return to the measurement screen.
Salinity Calibration
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.
1. Remove the shield from the probe. Rinse the probe with purified water.
2. Fill the calibration beaker 2/3 full with salinity standard of a known value.
3. Immerse the sensors in the solution. Raise and lower the probe several times then discard this
solution.
4. Fill the calibration beaker 2/3 full with the salinity standard.
5. Slowly place the sensors in the solution. Dislodge bubbles that may adhere to the sensors.
6. Screw the calibration beaker completely onto the probe body. Some solution may overflow.
7. Wait a few minutes for the measurement to stabilize. Use the arrow keys to select “Salinity”
from the Conductivity Calibration list and press Start to start the calibration. A text box window
will appear. Use the keypad to enter the value of the standard (5.00 to 70.00 PSU) at the
current temperature. Press Accept to confirm the standard value.
8. The stability counter will count down until the display shows the “Ready” message.
9. Press Confirm to save the calibration. The message “Storing” followed by “Calibration
completed” will be displayed.
10. Press OK to return to the calibration menu or Measure to return to the measurement screen.
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