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| Brand | Huakeyi |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China-made) |
| Model | HK-7501 |
| Price Range | USD 14,000 – 42,000 |
| Instrument Type | Online Analyzer |
| Measurement Method | Nessler Reagent Spectrophotometry |
| Measurement Range | 0–10 mg/m³ (customizable) |
| Detection Limit | 0.05 mg/m³ |
| Zero Drift | ±1% FS/month |
| Cycle Time | 5 min |
| Heating Temperature | 180–240 °C |
| Sample Flow Rate | 4–5 L/min |
| Reagent Consumption | Nessler Reagent 1 L/month, Potassium Sodium Tartrate Solution 0.5 L/month |
| Ambient Temperature | −10 to 50 °C |
| Power Supply | AC 200–240 V |
| Power Consumption | ≤1 kW |
| Compressed Air | 0.6–0.8 MPa |
| Enclosure Dimensions | 850 × 600 × 1780 mm (L×W×H) |
| Analog Output | 1 channel (0–10 mA / 0–20 mA / 4–20 mA, isolated, max load 750 Ω) |
| Relay Outputs | 3 channels |
| Communication Interface | RS485 |
| Filtration Precision | 2 µm (metal-ceramic composite membrane) |
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