The SL-510-SS Upward-Looking Thermopile Pyrgeometer is a high-precision sensor designed to measure longwave infrared radiation for weather, agricultural, hydrological, and renewable energy applications. Its rugged, self-cleaning housing, integrated thermistor, and IP68 marine-grade connector ensure reliable long-term performance and easy maintenance in demanding outdoor environments.
Specifications
| Parameter | Specification |
|---|---|
| Sensitivity | 0.12 mV per W m⁻² (variable from sensor to sensor, typical value listed) |
| Calibration Factor (Reciprocal of Sensitivity) | 8.5 W m⁻² per mV (variable from sensor to sensor, typical value listed) |
| Calibration Uncertainty | ±5 % |
| Measurement Range | -200 to 200 W m⁻² (net longwave irradiance) |
| Measurement Repeatability | Less than 1 % |
| Long-term Drift | Less than 2 % change in sensitivity per year |
| Non-linearity | Less than 1 % |
| Detector Response Time | Less than 0.5 s |
| Field of View | 180° |
| Spectral Range | 5 to 30 µm |
| Temperature Response | Less than 5 % from -15 to 45 °C |
| Window Heating Offset | Less than 10 W m⁻² |
| Zero Offset B | Less than 5 W m⁻² |
| Tilt Error | Less than 0.5 % |
| Uncertainty in Daily Total | ±5 % |
| Temperature Sensor | 30 kΩ thermistor, ±1 °C tolerance at 25 °C |
| Output from Thermistor | 0 to 2500 mV (typical; other voltages can be used) |
| Input Voltage Requirement for Thermistor | 2500 mV excitation (typical; other voltages can be used) |
| Heater | 780 Ω; 15.4 mA current draw; 185 mW power requirement at 12 V DC |
| Dimensions | 37.5 mm height × 23.5 mm diameter |
| Mass | 90 g |
| Warranty | 4 years against defects in materials and workmanship |
| Manufacturing | Assembled in the USA |
Hydrological Weather
Ecological Research
Environmental Monitoring
Agriculture Monitoring
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