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| Brand | Apogee |
|---|---|
| Origin | USA |
| Model | SL-510-SS (Upward), SL-610-SS (Downward) |
| Sensitivity | 0.12 mV per W/m² |
| Calibration Factor | 8.5 W/m² per mV |
| Measurement Range | −200 to +200 W/m² (net longwave) |
| Uncertainty | ±5% (k=2) |
| Spectral Range | 5–30 µm |
| Field of View | 150° (hemispherical) |
| Response Time | <0.5 s |
| Zero Offset Drift | <5 W/m² |
| Tilt Error | <0.5% |
| Nonlinearity | <1% |
| Long-Term Drift | <2% per year |
| Repeatability | <1% |
| Temperature Response | <5% (−15 to +45 °C) |
| Thermistor | 30 kΩ @ 25 °C, ±1 °C accuracy |
| Thermistor Output | 0–2500 mV (with 2500 mV excitation) |
| Heater Power | 185 mW @ 12 V DC (780 Ω, 15.4 mA) |
| Housing | Anodized aluminum, IP67 (SL-510-SS) / IP68 (SL-610-SS) |
| Cable Connector | Marine-grade stainless steel, 30 cm pigtail |
| Dimensions | Ø23.5 mm × 27.5 mm height |
| Mass | 90 g (SL-510-SS), 100 g (SL-610-SS) |
| Warranty | 4 years |
| Brand | Apogee |
|---|---|
| Origin | USA |
| Model Numbers | SP510 |
| Measurement Range | 0–2000 W/m² (shortwave net radiation) |
| Spectral Range | 385–2105 nm (SP510), 295–2685 nm (SP610), 360–1120 nm (silicon photodiode models) |
| Output Options | 0–114 mV, 0–300 mV, 0–400 mV, 0–2.5 V, 4–20 mA, 0–5 V, USB, SDI-12 |
| Uncertainty | ±5% |
| Cosine Response Error | <30 W/m² at 80° zenith angle (SP510) |
| Response Time | ≤0.5 s (thermopile), <1 ms (silicon) |
| Operating Temperature | −50 to +80 °C (thermopile), −40 to +70 °C (silicon, submersible to 30 m) |
| Long-Term Drift | <2% per year |
| IP Rating | IP68 (silicon models), IP67 (thermopile models) |
| Brand | Apogee |
|---|---|
| Origin | USA |
| Model | SU-100 |
| Spectral Range | 250–400 nm |
| Absolute Accuracy | ±10% |
| Uniformity | ±5% |
| Repeatability | ±1% |
| Output Sensitivity | 0.2 mV per μmol·m⁻²·s⁻¹ |
| Full-Sun Output | ~35 mV (≈175 μmol·m⁻²·s⁻¹, ≈60 W·m⁻²) |
| Calibration Factor | 5.0 μmol·m⁻²·s⁻¹ per mV |
| Output Range | 0–60 mV (0–300 μmol·m⁻²·s⁻¹, 0–102 W·m⁻²) |
| Response Time | <1 ms |
| Long-Term Drift | <3% per year |
| Operating Environment | −25 to +55 °C, 0–100% RH |
| IP Rating | IP68 (submersible) |
| Weight | 75 g |
| Standard Cable Length | 5 m (extendable) |
| Power Supply | Self-powered (no external power required) |
| Brand | Apogee |
|---|---|
| Origin | USA |
| Model | SN-500 |
| Measurement Range (Shortwave Up) | 0–2000 W/m² |
| Measurement Range (Shortwave Down) | 0–2000 W/m² |
| Measurement Range (Longwave Up) | −200 to +200 W/m² |
| Measurement Range (Longwave Down) | −200 to +200 W/m² |
| Spectral Range (Shortwave Up) | 385–2105 nm |
| Spectral Range (Shortwave Down) | 295–2685 nm |
| Spectral Range (Longwave) | 5000–30,000 nm |
| Sensitivity | 55 µV/(W/m²) (SW↑), 150 µV/(W/m²) (SW↓), 100 µV/(W/m²) (LW↑/LW↓) |
| Response Time | 1 s (detector) |
| Zero Offset (5 K/h) | 18.2 W/m² (SW↑), 6.67 W/m² (SW↓), 10 W/m² (LW) |
| Field of View | 180° (SW↑), 150° (SW↓), 180° (LW↑/LW↓) |
| Output | Four SDI-12 digital channels (SW↑, SW↓, LW↑, LW↓) |
| Supply Voltage | 5–16 V DC (heater rated at 12 V DC) |
| Power Consumption | 62 mA / 740 mW @ 12 V DC |
| Operating Temperature | −50 °C to +80 °C |
| Relative Humidity | 0–100 % RH |
| Dimensions | 116 mm (L) × 45 mm (W) × 66 mm (H) |
| Weight | 320 g (including mounting rod and 5-m cable) |
| Cable | 5-m, 4-conductor shielded twisted pair with ethylene propylene rubber jacket |
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