240-SP Thermopile Pyranometers/Albedometer

Specifications

240-SP-510-SS Upward-Looking Thermopile Pyranometer

• Power Supply: Self powered
• Sensitivity (variable from sensor to sensor, typical values listed): 0.057 mV per W mˉ²
• Calibration Factor (reciprocal of sensitivity) (variable from sensor to sensor, typical values listed): 17.5 W mˉ² per mV
• Calibration Uncertainty: ± 5%
• Calibrated Output Range: 0 to 114 mVMeasurement Range0 to 2000 W mˉ² (net shortwave irradiance)
• Measurement Repeatability: Less than 1%
• Long-term Drift: Less than 2% per year
• Non-linearity: Less than 1%
• Detector Response Time: 0.5 seconds
• Field of View: 180°
• Spectral Range (50 % points): 385 nm to 2105 nm
• Directional (Cosine) Response: Less than 30 W mˉ² at 80 ° solar zenith
• Temperature Response: Less than 5% from -15 to 45 C
• Zero Offset A: Less than 5 W mˉ², Less than 10 W mˉ² (heated)
• Zero Offset B: Less than 5 W mˉ²
• Operating Environment: -50 to 80 C, 0 to 100% relative humidity
• Heater: 780 Ω, 15.4 mA current drain and 185 mW power requirement at 12 Vdc
• Uncertainty in Daily Total: Less than 5%
• Dimensions: 28.7 mm height, 23.5 mm diameter
• Mass: 90 g
• Cable: 5 meters of four conductor, shielded, twisted-pair wire; additional cable available in multiples of 5 meters; TPR jacket (high water resistance, high UV stability, flexibility in cold conditions); pigtail lead wires

240-SP-610-SS Downward-Looking Thermopile Pyranometer

• Sensitivity (variable from sensor to sensor, typical values listed): 0.15 mV per W mˉ²
• Calibration Factor (reciprocal of sensitivity) (variable from sensor to sensor, typical values listed): 6.7 W mˉ² per mV
• Calibration Uncertainty: ± 5%
• Calibrated Output Range: 0 to 300 mV
• Measurement Range: 0 to 2000 W mˉ² (net shortwave irradiance)
• Measurement Repeatability: Less than 1%
• Long-term Drift: Less than 2% per year
• Non-linearity: Less than 1%
• Detector Response Time: 0.5 seconds
• Field of View: 150°
• Spectral Range (50 % points): 295 to 2685 nm
• Directional (Cosine) Response: Less than 20% for angles between 0 and 60°
• Temperature Response: Less than 5 % from -15 to 45 C
• Zero Offset A: Less than 5 W mˉ², Less than 10 W mˉ² (heated)
• Zero Offset B: Less than 5 W mˉ²
• Uncertainty in Daily Total: Less than 5%
• Operating Environment: -50 to 80 C, 0 to 100% relative humidity
• Heater: 780 Ω, 15.4 mA current drain and 185 mW power requirement at 12 Vdc
• Dimensions: 28.7 mm height, 23.5 mm diameter
• Mass: 100 g
• Cable: 5 meters of four conductor, shielded, twisted-pair wire; additional cable available in multiples of 5 meters; TPR jacket (high water resistance, high UV stability, flexibility in cold conditions); pigtail lead wires

Downloads

• 240-SP-510 and 240-SP-610 Data Sheet
• 240-SP510 and 240-SP-610 Manual