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| Brand | Lanjing |
|---|---|
| Model | LJ-201 |
| Measurement Principle | Salicylate Spectrophotometry |
| Measurement Ranges | (0–5), (0–10), (0–25), (0–50), (0–125), (0–250) mg/L NH₃–N |
| Zero Drift | ±0.02 mg/L |
| Span Drift | ±1.0% F.S. |
| Accuracy | ±8.0% at 20% F.S., ±5.0% at 50% F.S., ±3.0% at 80% F.S. |
| Limit of Quantitation | 0.15 mg/L |
| Repeatability | ≤2.0% |
| Cycle Time | ≤60 min |
| MTBF | ≥720 h |
| Insulation Resistance | >20 MΩ |
| Output Interfaces | RS232 / RS485, 4–20 mA analog |
| Dimensions | 500 × 440 × 1440 mm (L×W×H) |
| Weight | 55 kg |
| Display | 7-inch color touch screen |
| Control System | Industrial PLC |
| Operating Temperature | 5–35 °C |
| Operating Humidity | 20–85% RH |
| Power Supply | AC 220 V ±25 V, 50 Hz ±0.5 Hz |
| Rated Power | 100 W |
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