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| Brand | Ailun General / Qingdao Ailun |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | AL-AC140 |
| Measurement Parameter | Total Phosphorus |
| Instrument Type | Laboratory-Based Analyzer |
| Measurement Principle | Acid Digestion + Molybdenum Blue Colorimetry |
| Measurement Range | 0–10 mg/L (expandable and adjustable) |
| Detection Limit | 0.01 mg/L |
| Repeatability | ≤5% RSD |
| Zero Drift | ≤0.01 mg/L |
| Span Drift | ≤1.0% over 24 h |
| Measurement Cycle | 20–120 min (adjustable in 1-min increments) |
| Digestion Time | Configurable |
| Sampling Interval | 10–9999 min or on-the-hour mode |
| Calibration Interval | 1–99 days, user-definable start time |
| Maintenance Interval | Monthly (~30 min per session) |
| Output Interfaces | RS-232, RS-485, 4–20 mA (optional) |
| Environmental Requirements | Indoor controlled temperature (+5 to +28 °C), humidity ≤90% non-condensing |
| Power Supply | AC 230 ±10 V, 50 ±10 Hz, 5 A |
| Accuracy (Standard Solution) | ±8.0% at 2.0 mg/L, ±5.0% at 5.0 mg/L, ±3.0% at 8.0 mg/L |
| Memory Effect | ≤0.3 mg/L at 2.0 mg/L standard, ≤0.2 mg/L at 8.0 mg/L standard |
| Field Sample Comparison | ≤0.2 mg/L for samples <2.0 mg/L |
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