• Calibration Uncertainty: ± 5 %
• Measurement Range: 0 to 4000 µmol mˉ² sˉ¹
• Measurement Repeatability: Less than 0.5 %
• Long-term Drift (Non-stability): Less than 2 % per year
• Non-linearity: Less than 1 % (up to 4000 µmol mˉ² sˉ¹)
• Response Time: Less than 1 ms
• Field of View: 180 ˚
• Spectral Range: 389 to 692 nm ± 5 nm (wavelengths where response is greater than 50 % of maximum)
• Spectral Selectivity: Less than 10 % from 412 to 682 nm ± 5 nm
• Directional (Cosine) Response: ± 5 % at 75 ˚ zenith angle
• Azimuth Error: Less than 0.5 %
• Tilt Error: Less than 0.5 %
• Temperature Response: -0.11 ± 0.03 % Cˉ¹
• Uncertainty in Daily Total: Less than 5 %
• Detector: Enhanced silicon photodiode
• Housing: Anodized aluminum body with acrylic diffuser
• IP Rating: IP68
• Operating Environment: 0 to 50 C, less than 90 % non-condensing relative humidity up to 30 C, less than 70 % non-condensing relative humidity from 30 to 50 C, separate sensors can be submerged in water up to depth of 30 m
• Meter Dimensions: 126 mm length, 70 mm width, 24 mm height
• Sensor Dimensions: 24 mm diameter, 37 mm height
• Mass: 100 g (with 5 m of lead wire)
• Cable: 2 m of two conductor, shielded, twisted-pair wire; additional cable available; TPR jacket
• Warranty: 4 years against defects in materials and workmanship
• Manufactured: Made in the USA