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| Brand | LI-COR |
|---|---|
| Origin | Germany |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Import Status | Imported |
| Model | LI-7815 |
| Detection Principle | Optical Feedback–Cavity Enhanced Absorption Spectroscopy (OF-CEAS) |
| CO₂ Range | 0–10,000 μmol/mol |
| H₂O Range | 0–60,000 μmol/mol |
| CO₂ Precision | 0.04 μmol/mol (1σ, 5-s average @ 400 μmol/mol) |
| Max Drift | < 0.2 μmol/mol per 24 h |
| CO₂ Response Time (T₁₀–T₉₀) | ≤2 s (0 → 400 μmol/mol) |
| H₂O Precision | 20 μmol/mol (1σ, 5-s average @ 10,000 μmol/mol) |
| Measurement Frequency | 1 Hz |
| Optical Cavity Volume | 6.41 cm³ |
| Sample Flow Rate | 250 sccm (standard), 70 sccm with low-flow accessory |
| Operating Temperature | −25 °C to +45 °C (non-direct-sunlight conditions) |
| Operating Humidity | 0–85% RH (non-condensing, non-direct-sunlight) |
| Sample Line Humidity | 0–99.9% RH (non-condensing) |
| Pressure Range | 70–110 kPa (extended mode: 50–110 kPa) |
| Power Consumption | 22 W (steady-state @ 25 °C) |
| Weight | 10.5 kg (including internal batteries) |
| Dimensions (L×H×W) | 51 × 33 × 18 cm |
| Connectivity | Ethernet and Wi-Fi (2.4 GHz, IEEE 802.11 a/b/g/n/ac) |
| Data Storage | Internal memory supports ≥3 months of 1-Hz data |
| Brand | LI-COR |
|---|---|
| Origin | Germany |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Import Status | Imported |
| Model | LI-870 |
| Price Range | USD 52,000–65,000 |
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