The SS-120 measures a wavelength range of 635 to 1100 nm. The spectroradiometer is an easy-to-use, cost-effective, versatile spectral measurement system that can be interfaced to a computer. Typical applications include measurement of spectral output (energy flux density, photon flux density, or illuminance) of different radiation sources (often for plant or human lighting), and reflectance and transmittance measurements of natural and synthetic surfaces and materials (often plant leaves and canopies).
The SS-120 package includes:
Spectroradiometer unit and cosine corrected detector mounted in the housing
180° FOV head and black cap
AL-200 bubble-level
USB cable for computer interface
2GB USB drive with ApogeeSpectrovision software (Windows compatible, XP and later; Mac compatible, 10.10 and later) and required drivers
Carrying case
Wavelength Range 635 to 1100 nm
Wavelength Measurement Interval 1 nm
Wavelength Resolution 3.0 nm (full-width, half-maximum)
Wavelength Accuracy ± 0.5 nm
Wavelength Repeatability ± 0.2 nm
Analog to Digital Resolution 14 bit
Signal to Noise Ratio 1500:1 (at maximum signal)
Stray Light ≤; 0.25 %at 850 nm
Dark Noise ≤ 3 counts
Integration Time Range 10 ms to 10 s
Measurement Sensitivity Greater than 10 % of max sensitivity for wavelengths less than 1030 nm
Measurement Repeatability Less than 1.0 % (wavelengths less than 1020 nm)
Directional (Cosine) Response ± 5 % at 75 ˚ zenith angle
Fields of View 180 ˚ (upward-facing), 25 ˚ or 150 ˚ (downward-facing)
Temperature Response -0.1 ± 0.1 % per C
Current Draw 190 mA during measurement and when idle (USB)
Power Requirement 1 W (USB)
Communication Protocol Modbus RTU over RS-232 (USB)
Interface Cable 5 m PVC jacket with USB (for computer)
Software Apogee Spectrovision (windows compatible, XP and later, Mac compatible, 10.9 and later)
Operating Environment -20 to 70 C, 0 to 100 % relative humidity
Thread Size (for Mounting) 1/4" – 20
Dimensions 89.3 mm height, 50.8 mm width, 38.1 mm depth
Mass 300 g
Warranty 1 year against defects in materials and workmanship
