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Henan Oceanus Import & Export Co., Ltd

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TDS-3 water quality detector

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TDS-3 water quality detector


Hold function saves the measurements for convenient reading and recording.

Auto-off function: turns off meter after 10 minutes of non-use to conserve batteries.

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.

Calibrating Steps:

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 “ON/OFF” button.

Instructions details:

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 reading.

After usage, shake off water from your meter or wipe it with a tissue.

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 Celsius only).

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 association).


Your meter has been factory calibrated well.

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