SP-610-SS Downward-Looking Thermopile Pyranometer

Sensitivity (variable from sensor to sensor, typical values listed): 0.035 mV per W mˉ²
Calibration Factor (reciprocal of sensitivity) (variable from sensor to sensor, typical values listed): 28.5 W mˉ² per mV
Calibration Uncertainty at 1000 W mˉ²: Less than 3 %
Calibrated Output Range: 0 to 70 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): 370 to 2240 nm
Directional (Cosine) Response: Less than 20 W mˉ² for angles between 0 and 60 ˚
Temperature Response: Less than 5 % from -15 to 45ºC
Zero Offset A: Less than 2 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 an 12 V DC
Dimensions: 23.5 mm diameter, 27.5 mm height
Mass: 100 g
Warranty: 4 years against defects in materials and workmanship