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DDS-201 Series Benchtop Conductivity Meters
The DDS-201 Series Benchtop Conductivity Meters are high-precision laboratory instruments designed for accurate measurement of conductivity, resistivity, TDS, and salinity across a wide range of water quality applications. With Intelligent Electrode Management Technology, the instrument automatically recognizes connected electrodes and transfers calibration data for secure and error-free operation.
Featuring a 7-inch full-angle LCD, one-touch operation, IP54 splash protection, the DDS-201 series delivers stable, repeatable results for laboratories analyzing pure water, ultrapure water, natural water, and industrial solutions. Its flexible electrode holder, Bluetooth data transfer, and large 999-set storage capacity make it a powerful and user-friendly choice for routine water quality testing in research, environmental monitoring, and industrial quality control.
Key Features:
● High measurement accuracy and stability: Supports conductivity measurement of pure water and ultrapure water, significantly reducing data drift and instability caused by electrode contamination and interference.
● Intelligent Electrode Management Technology: Automatically recognizes intelligent electrodes and transmits calibration data from the electrode chip to the instrument, ensuring safer data handling and minimizing errors.
● Flexible Electrode Holder: Newly designed holder allows one-handed operation and vertical movement, enabling the electrode to be positioned precisely for optimal measurement performance, faster testing, and reduced risk of sample spillage or electrode damage.
● User-Friendly Interface: The 7-inch full-angle LCD screen offers an intuitive menu guide, making operation more convenient. Switching between various parameters before and after measurement is easy.
● IP54 Protection Rating: Depending on the instrument, electrode, and connection, the instrument's shell prevents water droplets from leaking and allows cleaning with a damp cloth.
● Convenient Measurement: One-touch operation for measurement, calibration, storage, and other functions, making it simple and convenient.
● Multiple Data Storage and Transmission Methods: Stores up to 999 measurement results. Data can be directly printed via Bluetooth.
Technical Specifications
Item | DDS-201A | DDS-201B | DDS-201C |
Conductivity | |||
Measurement Range | 0.00 μS–199 mS/cm | 0.000 μS–1000 mS/cm | 0.000 μS–2000 mS/cm |
Minimum Resolution | 0.01 μS/cm | 0.001 μS/cm | |
Accuracy | ±1.0% FS | ||
Temperature Compensation Range | 0°C to 100°C (Automatic/Manual) | ||
Calibration Function | 2-point calibration | ||
Resistivity | |||
Measurement Range | 5.000 Ω·cm–20.00 MΩ·cm | 5.000 Ω·cm–100.00 MΩ·cm | |
Minimum Resolution | 0.010 Ω·cm | ||
Accuracy | ±1.0% FS | ±0.5% FS | |
TDS (Total Dissolved Solids) | |||
Measurement Range | 0.00 mg/L–200 g/L | 0.00 mg/L–500 g/L | 0.000 mg/L–1000 g/L |
Minimum Resolution | 0.01 mg/L | 0.001 mg/L | |
Accuracy | ±1.0% FS | ||
Salinity | |||
Measurement Range | 0.00–100.00 ppt | ||
Minimum Resolution | 0.01 ppt | ||
Accuracy | ±0.2% | ||
Temperature | |||
Measurement Range | — | -5.0–105.0 °C | -10.0–130.0 °C |
Minimum Resolution | — | 0.1 °C | |
Accuracy | — | ±0.1 °C | |
Basic Parameters | |||
Data Storage | Optional | 999 sets | |
Bluetooth Transfer | Optional | Standard | |
Stored Data | Measurement value, unit, temperature, time | ||
Power Supply | AC 90–240 V input, DC 12 V output (adapter included) | ||
Auto Power Off | Yes | ||
Power-loss Protection | Yes | ||
Factory Reset | Yes | ||
Dimensions (L × W × H) | 203 × 163 × 70 mm | ||
Weight (kg) | 1.08 | ||
Operating Temperature | 5–45 °C | ||
Operating Humidity | ≤95% | ||
Protection Rating | IP54 | ||
Comprehensive operating instructions and technical guidance are provided in the official user manual.
