The SG-400 Cloudburst Weighing Precipitation Gauge is an all-weather, high-accuracy system designed to measure total precipitation from rain, snow, sleet, and hail. Its precision load cell measures the collected precipitation by weight, while an advanced filtering algorithm compensates for temperature changes, evaporation, and wind-induced vibration to improve measurement reliability.
Specifications
| Parameter | Specification |
|---|---|
| Precipitation Type | Liquid, solid, mixed |
| Inlet Diameter / Area | 8-inch inlet diameter / 324 cm² inlet area (National Weather Service) |
| Precipitation Capacity | 900 mm / 35 in (NWS inlet) |
| Heater | No heater |
| Bucket Capacity | 30 L / 8 gal |
| Rate (Intensity) Range | 0 to 3000 mm hour⁻¹ (0 to 50 mm min⁻¹) |
| Rate (Intensity) Threshold (1 min data) | 6 mm hour⁻¹ (0.1 mm min⁻¹) |
| Calibration Accuracy (Cumulative Amount) | 0.1 mm < 5 mm; 1 % for > 5 mm |
| Calibration Accuracy (Rate / Intensity) | 5 % for > 2 mm hr⁻¹ |
| Measurement Resolution | 0.01 mm |
| Output Interval | 1 min (unfiltered data); 1 to 30 min (filtered data) |
| Communication Interface | SDI-12 v1.4 |
| Temperature Sensitivity | ±0.01 mm °C⁻¹ |
| Long-term Drift (Non-stability) | Less than 0.5 % yr⁻¹ |
| Non-linearity | Less than 0.1 mm |
| Transducer | Stainless steel strain-gauge bridge load cell |
| Voltage Input | 5.5 to 26 V DC |
| Current Draw | 20 mA |
| Power Requirement | 240 mW at 12 V DC |
| Operating Environment | -40 to 60 °C; 0 to 100 % relative humidity |
| IP Rating | IP67 (load cell and circuitry) |
| Dimensions | 38 cm diameter × 80 cm height |
| Mass | 12 kg (empty bucket) |
| Cable | 5 m three-conductor wire with M8 connector (IP67) |
| Mounting | Holes for 15.24 cm wood post; adapter for 10.16 cm pipe |
| Warranty | 4 years against defects in materials and workmanship |
| Manufacturing | Assembled in the USA |
Agricultural Monitoring
Climate Research
Environmental Research
Flood Forecasting
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