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| Brand | Ailun (Qingdao Ailun) |
|---|---|
| Origin | Shandong, China |
| Model | AL-AC130 |
| Measurement Principle | Colorimetric Method (Nesslerization or Salicylate-based) |
| Measurement Range | 0–500 mg/L NH₃–N (expandable) |
| Detection Limit | ≤0.15 mg/L (±30% error at LOD) |
| Accuracy | ±8.0% at 2.0 mg/L |
| Repeatability | ≤2% RSD |
| Low-concentration Drift | ≤0.02 mg/L/24h |
| High-concentration Drift | ≤1.0 mg/L/24h |
| Minimum Cycle Time | 20 min (color development time adjustable from 5–120 min) |
| Sample Throughput | 10 samples per batch |
| Sampling Interval | 10–9999 min programmable + on-the-hour mode |
| Calibration Interval | 1–99 days, user-defined start time |
| Maintenance Interval | >720 hours |
| Output Interfaces | RS-232, RS-485, 4–20 mA (optional) |
| Operating Environment | +5 to +28 °C, ≤90% RH (non-condensing) |
| Power Supply | AC 220 V ±10%, 50 Hz ±10%, 5 A |
| Memory Effect | ≤0.3 mg/L at 2.0 mg/L standard |
| Field Validation | ≤0.2 mg/L bias for samples <2.0 mg/L |
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