Apogee SS-120 Spectroradiometer
The SS-120 is Apogee Instruments' new low-cost, research-grade spectroradiometer, designed for long-term outdoor and indoor measurements.
Measures NIR range (635 to 1100nm).
- Flexible Interface
Connects directly to a PC via USB or to dataloggers via ModBus RTU over RS232. - Extra-rugged Design
Equally suited for long term measurements on outdoor installations or for spot measurements in the lab. - Versatile Function
Measures irradiance, reflectance, and/or transmission to quantify incoming radiation spectra or index ratios.
YouTube Spectroradiometer Videos:
Apogee Instruments Spectroradiometer:
PAR, PPF, PPFD, and PFD Explained:
Photobiology Simplified with Dr Bruce Bugbee:
Complete Package
Includes spectroradiometer and cosine-corrected detector mounted in the housing, cable for datalogger interface, USB cable for computer interface, and USB drive with required drivers and software (compatible with all 32-bit and 64-bit Windows operating systems).
Unattended Field Measurements
The Spectroradiometer is small and lightweight with all measurement components contained in the rugged, weatherproof housing. Power consumption is low (1.2 W at 12 V DC during measurement, 0.1 W at 12 V DC when idle), temperature compensation is automatic, and unit can be interfaced to a datalogger (via ModBus communication protocol), allowing unattended measurement in the field.
Field of View Options
Three field of view (FOV) options are available: 180° (hemispherical FOV for measurement of incoming radiation), 150° (wide FOV for measurement of reflected radiation), and 25° (narrow FOV for measurement of reflected radiation).
Wavelength Range Options
Two wavelength options are available: 340 to 820 nm (SS-110) and 635 to 1100 nm (SS-120).
| Wavelength Range | 635 to 1100nm |
| Wavelength Resolution | 3.0nm (FWHM) |
| Irradiance Calibration Uncertainty | ±5% |
| Signal to Noise Ratio | 1500:1 (at maximum signal) |
| Measurement Sensitivity | greater than 10% of full-scale signal (wavelengths less than 1030nm) |
| Measurement Repeatability | less than 1.0% (wavelengths less than 1020nm) |
| Directional (Cosine) Response | ±5% at 75° zenith angle |
| Fields of View | 180° (upward-facing), 25° or 150° (downward-facing) |
| Operating Environment | -20 to 70°C, 0 to 100% RH |
| Temperature Response | -0.09 ±0.10% per °C |
| Current Drain | 100mA (fastest scan rate) |
| Communication Protocol | Modbus RTU over RS-232 (Pigtail and USB) |
| Dimensions | 89.26mm (height) x 50.8mm (width) x 38.1mm (depth) |
| Mass | 300g |
| Warranty | 4 years against defects in materials and workmanship |
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AA-100: Protective Carrying Case
Protective carrying case designed to transport and store Apogee meters, sensors, and accessories. -
AL-100 Solar Sensor Leveling Plate
AL-100 Solar Sensor Leveling Plate -
AM-110 Solar Sensor Mounting Bracket
AM-110: Solar Sensor Mounting Bracket -
AP-001 Field Spectroradiometer Reflectance Package
The AP-001 Field Spec Reflectance Package was made to include everything needed to make reflectance measurements. The package includes:
- AS-010: 150 Degree FOV/Reflectance Head
- AS-011: 25 Degree FOV/Reflectance Head
- AS-013: Angled Field Spectroradiometer Mounting Bracket
- AS-014: Field Spec Angle-mounted Solar Shield -
AS-010 150° FOV / Reflectance Head
The AS-010 150° FOV / Reflectance Head is an accessory for Apogee Field Spectroradiometers model SS-110 and SS-120. The head gives a wide field of view for measurement of reflected radiation. -
AS-011 25° FOV / Reflectance Head
The AS-011 25° FOV / Reflectance Head is an accessory for Apogee Field Spectroradiometers model SS-110 and SS-120. The head gives a narrow field of view for measurement of reflected radiation. -
AS-012 Field Spec Upward Solar Shield
The AS-012 Field Spec Upward Solar Shield is used with the Apogee Field Spectroradiometer models SS-110 and SS-120, and is designed to protect it from solar radiation when mounted upward. The AS-012 attaches to the AL-200 leveling plate included with the SS-110 and SS-120 spectroradiometers. -
AS-013 Angled Field Spec Mounting Bracket
The AS-013 Angled Field Spec Mounting Bracket facilitates angled mounting of Apogee Field Spectroradiometers model SS-110 and SS-120 to a mast or a pipe. -
AS-014 Field Spec Angle-mounted Solar Shield
The AS-014 Field Spec Angle-mounted Solar Shield is used to protect the Apogee Field Spectroradiometer model SS-110 and SS-120 from solar radiation when mounted at an angle.