3. Calibration
3.1 Rinse the probe in distilled water and dry it. Short press to
turn on the tester.
3.2 Long press to enter calibration mode; Short press to exit.
3.3 Dip the probe into 1413 µS calibration solution. Stir gently, leave it to stand,
LCD displays (Diagram 3), short press to complete 1-point calibration.
The tester returns to measuring mode, and calibration icon appears at the
button left of LCD.
3.4 Rinse probe in distilled water and dry it. Follow the steps in 4.2-4.3 to
complete 2
nd
point calibration in 12.88 mS calibration solution, tester returns to
measuring mode, calibration icons display on bottom left of LCD.
4. TDS Measurement
4.1 Short press to turn on tester. Rinse probe in distilled water and dry it.
4.2 Stir probe in the sample solution gently, leave it to stand. Get readings after
the smile icon comes up and stays.
5. Notes
5.1 The tester adopts 1413 µS and 12.88 mS standard calibration solutions. Users
can use 1-2 point calibrations as needed. For most circumstances, calibrating in
1413 µS to complete 1
st
point calibration will meet testing requirements.
5.2 The tester has self-diagnosis functions:
Symbol Self-Diagnosis information
How to fix
Wrong calibration solution,
which exceeds the
recognizable range of the
meter.
1. Check if calibration solution is
correct
2. Check if probe is damaged.
Diagram - 3
