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| Brand | Sea-Bird Scientific |
|---|---|
| Manufacturer | Satlantic (Canada) |
| Model | SUNA V2 |
| Detection Principle | In-Situ Ultraviolet Spectroscopy (ISUS) |
| Measurement Target | Nitrate-N (NO₃⁻) |
| Form Factor | Submersible, Online-Ready |
| Path Length Options | 5 mm or 10 mm |
| Detection Range | 0.5–4000 µM (0.007–56 mg/L as N) |
| Accuracy | ±2 µM (10 mm) / ±4 µM (5 mm) or ±10% |
| Short-Term Precision (3σ) | 0.3 µM (freshwater/seawater T-S corrected) |
| Long-Term Drift | ≤0.3 µM/h (T-S corrected) |
| Turbidity Tolerance | 625 NTU (10 mm), 1250 NTU (5 mm) |
| Wavelength Range | 190–370 nm |
| Lamp Lifetime | 900 h |
| Operating Voltage | 8–18 VDC (8–15 VDC with biowiper) |
| Power Consumption | 7.5 W (0.625 A @ 12 V) |
| Housing Material | Titanium / Acetal |
| Maximum Depth Rating | 500 m (100 m with biowiper) |
| Weight | 2.5 kg (3.1 kg with biowiper) |
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