Page 2
TDS20 Pocket TDS Tester Instruction Manual 1. Battery Installation Please install batteries according to the following steps. Please note polarity: “+” (positive) is upward; “-” (negative) is downward 2. Keypad Functions ■Short press------- < 2 seconds ■Long press-------- > 2 seconds 1.
Page 3
3. Complete Kit Diagram - 2 4. Calibration 4.1 Rinse the probe in distilled water and dry it. Short press turn on the tester. 4.2 Long press to enter calibration mode; Short press to exit. Diagram - 3 4.3 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.
Page 4
5. TDS Measurement 5.1 Short press to turn on tester. Rinse probe in distilled water and dry it. 5.2 Stir probe in the sample solution gently, leave it to stand. Get readings after the smile icon comes up and stays. 6.
Page 5
7.2 How to setup parameters: to enter setup → short press When turned off, long press to switch P1-P2→ Short press , parameter flickering→short press to choose, short press to confirm parameter selection→Long press to switch off. 7.3 Parameter setting notes a) TDS Factor (P1): Users can adjust TDS Factor by experimental data or experience.
Page 6
8. Technical Specifications Range 0–100.0 ppm, 0–1000 ppm, 0–10.00 Resolution 0.1/1 ppm, 0.01 ppt Accuracy ±1% F.S Calibration points 1-2 points Automatic Temp. 0-50˚C Compensation Temp. Range 0-50˚C Resolution 0.1˚C Accuracy ±0.5˚C 9. Other Functions & Parameters Indication of Auto Power- Power-off in 8 calibration points minutes if no...
Page 7
Warranty period is the time limit to provide free service for the products purchased by customers, not the service life of the tester or probe. Apera Instruments reserves the right to update the information in this manual without giving notice in advance.
Need help?
Do you have a question about the TDS20 and is the answer not in the manual?
Questions and answers