The Leici DDS-11A Conductometer User Manual provides operating instructions, calibration steps, electrode cleaning, specifications, and safety guidelines…
The DDS-11A is a digital display conductometer designed for laboratory measurement of water solution conductivity. It is used in petrochemical, biopharma, wastewater treatment, environmental monitoring, mining, and research institutions.
The manual covers the instrument’s technical specifications, hardware layout, operation procedures, calibration, electrode cleaning and storage, safety precautions, and ordering information. Appendices provide electrode constant calibration methods and KCl standard solutions. This manual is written in Chinese.
| Measurement range | 0 ~ 2 × 10⁵ µS/cm |
|---|---|
| Resolution (0‑2 µS/cm range) | 0.001 µS/cm |
| Temperature compensation range | 5 ~ 35 °C |
| Operating temperature | 5 ~ 35 °C |
| Relative humidity (max) | 85 % |
| Weight | 0.9 kg |
| Output signal | 0 ~ 10 mV |
Press the “Calibrate/Measure” button to enter calibration mode, then adjust the constant knob until the display shows the electrode’s nominal constant value.
The instrument measures conductivity from 0 to 2 × 10⁵ µS/cm, selectable in five range settings.
Clean bright platinum electrodes with detergent‑warm water and store dry; platinized electrodes must be stored in distilled water and cleaned chemically, never with a brush.