Apogee offers two types of spectroradiometers. The Field Spectroradiometer was designed for field measurements as well as laboratory measurements. The Lab Spectroradiometer is for laboratory measurements and portable measurements.
| SS-110 | SS-120 | PS-100 | PS-200 | PS-300 | |
|---|---|---|---|---|---|
| Wavelength Range | 340 to 820 nm | 635 to 1100 nm | 350 to 1150 nm | 190 to 850 nm | 220 to 1100 nm |
| Irradiance Calibration Range | - | - | 350 to 1000 nm | 300 to 850 nm | 300 to 1000 nm |
| Wavelength Measurement Internal | 1 nm | 1 nm | - | - | - |
| Wavelength Resolution | 3 nm (full width half maximum) | 3 nm (full width half maximum) | 1 nm | 0.85 nm | 1.5 nm |
| Detector Type | - | - | CCD, 2048 pixel | CCD, 2048 pixel | CCD, 2048 pixel |
| Grating Type | - | - | Holographic & Ruled, 600 g/nm | Holographic & aberration-corrected, 590 g/nm | Holographic & aberration-corrected, 590 g/nm |
| Digitizer | - | - | 16-bit | 16-bit | 16-bit |
| Wavelength Accuracy | ± 0.5 nm | ± 0.5 nm | - | - | - |
| Wavelength Repeatability | ± 0.2 nm | ± 0.2 nm | - | - | - |
| Analog to Digital Resolution | 14 bit | 14 bit | - | - | - |
| Signal to Noise Ratio | 1500:1 (at maximum signal) | 1500:1 (at maximum signal) | 1000:1 | 1000:1 | 1000:1 |
| Stray Light | ≤ 0.25 % at 590 nm | ≤ 0.25 % at 850 nm | 0.1 % at 435 nm, 0.5 % at 600 nm | 0.02 % at 435 nm, 0.2 % at 200 nm | 0.02 % at 435 nm, 0.2 % at 220 nm |
| Dark Noise | ≤ 3 counts | ≤ 3 counts | - | - | - |
| Integration Time Range | 10 ms to 10 s | 10 ms to 10 s | 1 ms to 65 s | 1 ms to 65 s | 1 ms to 65 s |
| Measurement Sensitivity | Greater than 10 % of max sensitivity for wavelengths greater than 380 nm | Greater than 10 % of max sensitivity for wavelengths less than 1030 nm | - | - | - |
| Measurement Repeatability | Less than 1 % (wavelengths greater than 400 nm) | Less than 1 % (wavelengths less than 1020 nm) | Less than 1 % | Less than 1 % | Less than 1 % |
| Directional (Cosine) Response | ± 5 % at 75 ° zenith angle | ± 5 % at 75 ° zenith angle | ± 5 % at 80 ° zenith angle | ± 5 % at 80 ° zenith angle | ± 5 % at 80 ° zenith angle |
| Fields of View | 180 ° (upward-facing); 25 ° or 150 ° (downward-facing) | 180 ° (upward-facing); 25 ° or 150 ° (downward-facing) | |||
| Temperature Response | -0.1 ± 0.1 % per C | -0.1 ± 0.1 % per C | - | - | - |
| Irradiance Calibration Uncertainty | ± 5 % | ± 5 % | ± 10 % | ± 10 % | ± 10 % |
| Current Draw | 190 mA (USB) | 190 mA (USB) | - | - | - |
| Power Requirement | 1 Watt (USB) | 1 Watt (USB) | 100 mA at 5 V DC, supplied via USB code | 100 mA at 5 V DC, supplied via USB code | 100 mA at 5 V DC, supplied via USB code |
| Interface Cable | 5 m PVC jacket with USB (for computer) | 5 m PVC jacket with USB (for computer) | - | - | - |
| Optical Cable | - | - | 2 m armored fiber-optic | 2 m armored fiber-optic | 2 m armored fiber-optic |
| Software | Apogee Spectrovision (windows compatible, XP and later; Mac compatible 10.9 and later) | Apogee Spectrovision (windows compatible, XP and later; Mac compatible 10.9 and later) | Windows compatible, included | Windows compatible, included | Windows compatible, included |
| Operating Environment | -20 to 70 C, 0 to 100 % relative humidity | -20 to 70 C, 0 to 100 % relative humidity | - | - | - |
| Operating Temperature | - | - | 0 to 60 C | 0 to 60 C | 0 to 60 C |
| Thread Size (for mounting) | ¼"-20 | ¼"-20 | - | - | - |
| Dimensions | 89.3 mm height, 50.8 mm width, 38.1 mm depth | 89.3 mm height, 50.8 mm width, 38.1 mm depth | 25 mm x 75 mm x 125 mm | 69 mm x 100 mm x 150 mm | 69 mm x 100 mm x 150 mm |
| Mass | 300 g | 300 g | 500 g | 900 g | 900 g |
