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| Brand | Lanjing |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | OEM/ODM Producer |
| Origin Category | Domestic (China) |
| Model | LJ-DJ1S |
| Price | USD 850 (FOB Qingdao) |
| Measurement Principle | Dual-Beam UV254 Absorption + Nephelometric Turbidity |
| COD Range | 0–500 mg/L (customizable to 0–200 mg/L) |
| COD Resolution | 0.1 mg/L |
| COD Accuracy | ±5% of reading |
| Turbidity Range | 0–400 NTU (customizable to 0–200 NTU) |
| Turbidity Resolution | 0.1 NTU |
| Temperature Range | 0–50 °C |
| Temp. Accuracy | ±0.3 °C |
| Temp. Compensation | Automatic |
| Auto-Cleaning | Integrated mechanical wiper with programmable cycle control |
| Power Supply | DC 12–24 V |
| Power Consumption | 0.7 W |
| Output | RS-485 (Modbus RTU protocol) |
| Enclosure Material | ABS housing + 316L stainless steel wetted parts |
| Protection Rating | IP68 |
| Installation | Submersible, 3/4" NPT thread |
| Cable Length | 5 m (5-conductor shielded) |
| Storage Temperature | −5 to +65 °C |
| Calibration | Two-point (zero & span) for both COD and turbidity channels |
| Dimensions | See technical drawing (L×W×H: 185 × 62 × 62 mm) |
| Compliance | Designed per ISO 7027 (turbidity), ASTM D5540 & EPA 415.3 (UV254-based organic carbon estimation), CE-marked for EMC and LVD |
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