ECscan20/30/40
Conductivity Calibration
The ECscan series conductivity tester allows 1 to 3 points calibration. For better accuracy, we recommend that you perform 3 points calibration
or select a standard solution closest to the sample conductivity you are measuring. The tester will automatically detect the calibration standard
and prompt the user to perform the calibration. When the calibration is completed, all new calibration values will automatically override existing
data. The following table shows acceptable conductivity range of standard solution for each measurement range.
Measurement Range
Calibration Solution Range
Default
0 to 200
µ S/cm
70 to 170
µ S/cm
84
µ S/cm
200 to 2000
µ S/cm
700 to 1700
µ S/cm
1413
µ S/cm
2 to 20
mS/cm
7 to 17
mS/cm
12.88
mS/cm
Make sure that using the fresh standard solution during the calibration. DO NOT reuse the standard solution after calibration, contaminants in
solution will affect the calibration and eventually the accuracy of the measurement.
Single Point Calibration
Make sure that you have selected 1 point calibration in the setup menu.
1.1 Press the
Cal
key, the tester enters the calibration mode, the display shows "----/CAL 1".
1.2 Rinse the electrode with deionized water and place into the standard solution. Stir tester gently to remove air bubbles trapped in the slot
of the sensor. The tester will automatically recognizes the standard solution and shows the calibration value.
1.3 Press the
Enter
key, the default calibration value begins flashing.
1.4 If necessary, press the
Cal
key to modify the calibration value, press the
Enter
key to confirm and move to the next digit. When the setting
is completed, make sure that the displayed value matchs your calibration standard.
1.5 Press the
Enter
key, the tester begins the calibration.
When the reading has stabilized, the display will show "End".
Calibration is completed.
Multipoint Calibration
Make sure that you have selected 2 or 3 points calibration in the setup menu.
2.1 Repeat steps 1.1 through 1.5 above. When the first calibration point is completed, the display will show "----/CAL 2", the tester prompts
you to continue with second point calibration.
2.2 Repeat steps 1.2 through 1.5 above until the display shows "End". Calibration is completed.
Performing the conductivity calibration will simultaneously calibrate the corresponding TDS and salinity values.
To exit the calibration without saving calibrated values, press the
Meas
key.