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| Brand | Apogee |
|---|---|
| Origin | USA |
| Model | MQ500 |
| Measurement Uncertainty | ±5% |
| Measurement Range | 0–4000 µmol·m⁻²·s⁻¹ |
| Long-term Drift | <2% per year |
| Repeatability | <0.5% |
| Nonlinearity | <1% |
| Response Time | <1 ms |
| Field of View | 180° |
| Spectral Range | 389–692 nm ±5 nm |
| Spectral Selectivity | <10% (412–692 nm ±5 nm) |
| Azimuthal Error | <0.5% |
| Tilt Error | <0.5% |
| Temperature Response | −0.11±0.04 %·°C⁻¹ |
| Ingress Protection Rating | IP68 |
| Dimensions | 24 mm (diameter) × 37 mm (height) |
| Mass | 100 g (including 5 m cable) |
| Brand | Apogee |
|---|---|
| Origin | USA |
| Model | SK01-DP2 |
| Spectral Range | 400–700 nm |
| Output Sensitivity | 0.5 mV per μmol·s⁻¹·m⁻² |
| Measurement Range | 0–3000 μmol·s⁻¹·m⁻² |
| Response Time (95%) | 30 ms |
| Long-Term Drift (per year) | < ±2% |
| Nonlinearity | < ±1% |
| Directional Response (30°–80° zenith angle) | < ±30 W·m⁻² (ISO 9060 Class II compliant) |
| Temperature Response | < ±0.15% per °C |
| Operating Temperature | −35 to +60 °C |
| Power Supply | 5.5–14.5 VDC, 3 mA |
| Housing | Anodized aluminum, IP67 rated |
| Cable Length | 3 m |
| Weight | 0.3 kg |
| Dimensions (L×W×H) | 150 × 150 × 150 mm |
| Calibration Uncertainty | ±3% |
| Spectral Responsivity Match (vs. CIE PAR action spectrum) | ±6% (overcast) to +2% (thin cloud) |
| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China-made) |
| Model | PARNet |
| Pricing | Available Upon Request |
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