Hold function saves the measurements for convenient reading and
Auto-off function: turns off meter after 10 minutes of non-use to
Measuring Range: Measures from 0-999ppm,with a resolution of 1 ppm.
From 1000 to 9990ppm,the resolution is 10ppm, indicated by drinking
x 10 symbol, Factory calibrated.
To hold “TEMP” Button for 3-5 seconds and then you will see the
number is beating in the displaying screen.
“HOLD” button is also called “ Increasing Button” at this time.
Therefore , if you want to increase the TDS value, you could press
the “HOLD” button.
“ON/OFF” button named “Reducing Button” at this time.
So, if you want to reduce the TDS value, you could press the
Remove the protective cap.
Turn the TDS meter on.
Immerse the meter into the water/solution up to the maximum
immersion level (2”).
Waiting until the display stabilizes, The TDS meter automatically
compensates for temperature variations Once the readout is
stabilized (30 to 45 seconds).Press the hold button to save
After usage, shake off water from your meter or wipe it with a
Taking Temperature Measurement:
1.Once the meter is on, the temperature function can be used at any
time, in or out of liquid.
2.Press the TEMP button. The display will switch to temperature(in
3.To return to TDS mode, press the TEMP button.
Precaution and notes:
1.Do not drop the entire TDS meter in water or dip beyond the
maximum immersion level. This unit is not covered under the
warranty if water enters the unit.
2. Do not store the TDS meter under high temperature or direct
sunlight. This will shorten the life-span of the product and
potentially avoid the warranty.
3. The TDS-3 meter is calibrated at 642ppm. It is recommended that
the calibration level should be the similar to the sample to be
tested. If you are testing higher ppm (member, water quality
Your meter has been factory calibrated well.