Tianwei Environment (TW)
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| Brand | Tianwei Environment (TW) |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Model | TW-BF1 |
| Instrument Category | Portable/Short-Term Meteorological Station |
| Spectral Range | 280–3000 nm |
| Response Time (95%) | 13 s |
| Zero Offset (Thermal Radiation) | ±10 W/m² |
| Zero Offset (Temperature Variation) | ±3 W/m² |
| Nonlinearity | ±1% |
| Stability (Annual Sensitivity Drift) | ±2% |
| Directional (Cosine) Response Error | ≤±5% at 30° solar elevation |
| Spectral Error | ±3% |
| Temperature Response (−10 to +40 °C) | ±3% |
| Tilt Error | ±1% |
| Sensitivity | 7–14 µV/(W·m⁻²) |
| Internal Resistance | ≤800 Ω |
| Operating Temperature | −40 to +85 °C |
| Operating Humidity | 5–90% RH |
| Power Consumption | 1.75 W |
| Rechargeable Lithium Battery | 12,000 mAh, ≥50 h runtime with battery level indication |
| Data Storage Capacity | ≥500,000 records |
| Deployment Time | ≤2 minutes by single operator |
| Weight | ≤5 kg |
| Communication Interfaces | GPRS, Bluetooth 5.0, RS-485-to-USB converter |
| Compliance | ISO 9060:2018 (Class C, First Class), WMO CIMO Guide (2022), GB/T 19565–2017 |