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| Brand | DoctorWater |
|---|---|
| Origin | Hunan, China |
| Model | Dr-M1902 |
| Portability | Portable |
| Conductivity Range | 0.01–20.00 µS/cm, 200.0 µS/cm, 2000 µS/cm, 20.00 mS/cm, 200.0 mS/cm |
| Temperature Range | 0–105°C (32–221°F) |
| Conductivity Accuracy | ±0.5% of full scale |
| Conductivity Resolution | 0.001 / 0.01 / 0.1 / 1 (auto-ranging) |
| Temperature Accuracy | ±0.5°C |
| Temperature Resolution | 0.1°C |
| Calibration Points | 1–3 points |
| Supported Standard Solutions | 10, 84, 1413 µS/cm |
| Temperature Compensation | Automatic or manual (linear: 0.0–10.0%/°C |
| Reference Temperature | 20°C or 25°C |
| Cell Constant Options | K = 0.1, 1.0, 10.0 cm⁻¹ |
| Data Storage | 100 measurement records |
| Interface | USB Type-A (data export & DC5V power input) |
| Power | 3× AA batteries (≈150 h runtime, backlight off) or external 5V adapter |
| Operating Temperature | 0–50°C |
| Connector | 6-pin DIN |
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