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| Brand | Shimadzu |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | UVM-4020 |
| Instrument Type | Online Analyzer |
| Measurement Principle | Weighted Multi-Wavelength Ultraviolet Absorption Spectrophotometry (243 nm, 254 nm, 265 nm, 275 nm, 290 nm) |
| Calibration | Automatic zero/span calibration with standard solutions (optional) |
| Measurement Ranges | 0–400 SAC, 0–200 SAC, 0–80 SAC |
| Cycle Time | 1 min (minimum), adjustable from 10 to 720 min |
| Output Parameters | COD, BOD, TOC, SAC |
| Preloaded Conversion Formulas | 30 built-in empirical equations |
| Auto-Cleaning Interval | User-configurable timer-based internal tubing flush |
| Power Supply | 220 V ±10 V, 50/60 Hz, ~100 VA |
| Operating Environment | 5–40 °C, ≤90% RH (non-condensing, non-freezing) |
| Sample Flow Rate | 1–2 L/min |
| Max. Sample Pressure | ≤50 kPa |
| Installation | Indoor only |
| Brand | Shimadzu |
|---|---|
| Origin | Jiangsu, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Category | Domestic |
| Model | COD-4200 |
| Instrument Type | Online Analyzer |
| Measurement Principle | High-Temperature Potassium Dichromate Digestion with Photometric Detection |
| Standard Range | 30–4000 mg/L COD |
| Accuracy | ±10% at ≥100 mg/L |
| Repeatability | ≤±5% |
| Zero Drift | ±5 mg/L |
| Span Drift | ≤±5% |
| Resolution | <1 mg/L |
| Minimum Measurement Cycle | 20 minutes |
| Calibration Modes | Manual and Automatic |
| Communication Interfaces | RS-232, 4–20 mA (bidirectional) |
| Power Supply | 220 VAC ±10%, 50 Hz ±5% |
| Power Consumption | ~100 VA |
| Dimensions | 500 mm × 420 mm × 1550 mm |
| Weight | ~90 kg |
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