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SS-120: Field Spectroradiometer-635 to 1100 nm

Apogee

Product Description

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 or datalogger. 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:

  1. Spectroradiometer unit and cosine corrected detector mounted in the housing

  2. 180° FOV head and black cap

  3. AL-200 bubble-level

  4. USB cable for computer interface

  5. Pigtail lead cable for datalogger interface

  6. 2GB USB drive with Spectrovision software and required drivers



Specifications


Wavelength Range

635 to 1100 nm

Wavelength Measurement Interval

Wavelength Range 635 to 1100 nm

Wavelength Measurement Interval 1 nm

Wavelength Resolution 3.0 nm (fall 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

Linearity Less than 1 % or 0.5 %

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 90 mA during measurement, 12 mA when idle (datalogger); 190 mA during measurement and when idle (USB)

Power Requirement 1 W (USB and datalogger)

Communication Protocol Modbus RTU over RS-232 (pigtail and USB)

Interface Cable 5 m santoprene jacket with pigtails (for datalogger), 5 m PVC jacket with USB (for computer)

Software Apogee Spectrovision (sindows 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

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