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| Brand | Thermo Fisher |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Origin | Domestic (China) |
| Model | Orion™ 3106 COD |
| Instrument Type | Online Analyzer |
| Measurement Principle | Potassium Dichromate Oxidation Digestion (Online Mode) |
| Detection Wavelength | 450 nm |
| Measurement Ranges | 20–200–800–2000 mg/L (auto-ranging) |
| Accuracy | ±5 mg/L (for values <50 mg/L) or ±10% (for values >50 mg/L) |
| Repeatability | ≤5% RSD |
| Limit of Detection (LOD) | 4 mg/L |
| Cycle Time | 40 minutes per sample |
| Sample Throughput | Up to 500 samples per batch |
| Brand | Thermo Fisher |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Regional Classification | Domestic (China) |
| Model | AquaEZ 3130 COD |
| Instrument Type | Online Analyzer |
| Wavelength | 450 nm |
| Measurement Range | 10–4000 mg/L |
| Accuracy | ±10% of reading (for samples >100 mg/L) |
| Repeatability | <5% of reading |
| Limit of Detection | 15 mg/L |
| Analysis Time | 45 minutes per cycle |
| Batch Capacity | 30 samples per 30-minute interval |
| Zero Drift | ≤5 mg/L |
| Protection Rating | IP65 / NEMA 4 |
| Power Supply | 100–240 V AC, 50/60 Hz |
| Dimensions (W×H×D) | 510 × 775 × 330 mm |
| Weight | 40 kg (excluding reagents) |
| Operating Temperature | 5–45 °C |
| Relative Humidity | ≤85% RH (non-condensing) |
| Output Interfaces | Dual 4–20 mA analog outputs, RS232 standard, RS485 optional |
| Digital I/O | 2 digital inputs, 8 digital outputs |
| Calibration Modes | Automatic scheduled, manual, and external-triggered |
| Data Storage | Up to 2 years of time-stamped measurement history with event tagging (M = maintenance, D = fault, C = calibration) |
| Display | Color LCD screen showing real-time results, calibration curves, and historical trends |
| Digestion Conditions | 165 °C, duration adjustable from 10–30 minutes |
| Measurement Modes | Continuous, periodic, timed, or external signal-triggered |
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