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Current Stock:
Power Supply Self-powered Output (sensitivity) 5 mV per W m⁻² (Red); 6.67 mV per W m⁻² (NIR) Calibration Factor (reciprocal of sensitivity) 0.2 W m⁻² (Red); 0.15 W m⁻² (NIR) Calibration Uncertainty ± 5 % Output Range 18.5 mV (Red); 26 mV (NIR) Wavelength Ranges Red detector = 650 nm with 10 nm full-width half-maximum; NIR detector = 810 nm with 10 nm full-width half-maximum Measurement Range 2x full sunlight Measurement Repeatability Less than 1 % Long-term Drift (Non-stability) Less than 2 % per year Response Time Less than 1 ms Field of View 180˚ Directional (Cosine) Response ± 2 % at 45˚; ± 5 % at 75˚ zenith angle Temperature Response Less than 0.1 % per C Housing Anodized aluminum body with acrylic diffuser IP Rating IP68 Operating Environment -40 to 70 C; 0 to 100 % relative humidity Dimensions 30.5 mm diameter, 36.6 mm height Mass 51 g Cable 5 m of shielded, twisted-pair wire; TPR jacket (high water resistance, high UV stability, flexibility in cold conditions); pigtail lead wires; stainless steel (316), M8 connector Warranty 4 years against defects in materials and workmanship