Full Range Photodiode Array UV-VIS-NIR-SWIR Laboratory Spectroradiometers
The SR-Series of full range laboratory spectroradiometers is ideal for a wide range of applications, including:
- Solar radiance and irradiance measurements
- Solar simulator test and classification
- LED, laser, light source metrology
- Radiometric calibration transfer
- Remote sensing applications
The SR-Series delivers a range of models that provide the following benefits:
- High sensitivity with a high signal-to-noise ratio and an unmatched wide dynamic range
- Fast and easy operation
- Autoexposure, autoscaling, and auto dark shutter for fast, accurate, one-touch scans
- Compact, lightweight design - easy to fit into your lab
- NIST traceable calibration for irradiance or spectral radiance measurements and calibration transfer
- No internal fiber optics or movable gratings that can break, drift, or fail during mission critical experiments
- Fiber optic or optional integrating sphere input
SR-Series Spectroradiometers
SR-6500 and SR-6500A Ultra High Resolution Spectroradiometers
- 350-2500nm range
- Three TE-cooled photodiode arrays: 1024 element TE-cooled silicon detector; 512 element TE-cooled InGaAs detector; 512 element TE-cooled extended InGaAs detector
- Spectral resolution:
- 1.5nm (350-1000nm)
- 3.0nm @ 1500nm
- 3.8nm @ 2100nm
RS-5400 High Resolution/High Sensitivity Spectroradiometer
- 350-2500nm range
- Three TE-cooled photodiode arrays: 1024 element UV-Enhanced silicon detector; 512 element TE-cooled InGaAs detector; 512 element TE-cooled extended InGaAs detector
- Spectral resolution:
- 2.7nm @ 700nm
- 5.5nm @ 1500nm
- 5.8nm @ 2100nm
SR-4500 and SR-4500A TE-Cooled Lab Spectroradiometers
- 350-2500nm range
- Three TE-cooled photodiode arrays: 512 element TE-cooled silicon detector; 256 element TE-cooled extended InGaAs detector; 256 element TE-cooled extended InGaAs detector
- Spectral resolution
- 3nm (350-1000nm)
- 8nm @ 1500nm
- 6nm @ 2100nm
SR-3500 High Resolution Lab Spectroradiometer
- 350-2500nm range
- 512 element Si array and two 256 element extended InGaAs arrays for best resolution in NIR ranges
- Spectral resolution
- 2.8nm (350-1000nm)
- 8nm @ 1500nm
- 7nm @ 2100nm
SR-3501 Extended Range Spectroradiometer
- 280-2500nm range
- 512 element Si array and two 256 element extended InGaAs arrays for best resolution in NIR ranges
- Spectral resolution
- 4nm (280-1000nm)
- 10nm @ 1500nm
- 7nm @ 2100nm
SR-1901PT Portable Spectroradiometer for Pulsed Solar Simulator Classification
- 280-1900nm range
- 512 element Si PDA and 256 element extended InGaAs array
- Spectral resolution
- 4nm (280-1000nm)
- 10nm (1000- 1900nm)
SR-1901 Extended Range Spectroradiometer
- 280-1900nm range
- 512 element Si PDA and 256 element extended InGaAs array
- Spectral resolution
- 4nm (280-1000nm)
- 10nm @ 1000 & 1900nm
Q: What's the difference between a spectroradiometer and a spectrometer? Which instrument should I buy?
A: SPECTRAL EVOLUTION Spectroradiometers are factory calibrated with NIST-traceable reference standards to measure spectral radiance and irradiance . They can also be used as spectrometers to measure reflectance, transflectance, absorbance and transmission. If you don't need to measure absolute energy levels of your target, then we suggest purchasing a spectrometer.

Click here to see the NEW SR-6500 and SR-6500A Spectoradiometers
- Spectral range 350-2500nm
- Ultra high resolution
- 1.5nm @ 700nm
- 3.0nm @ 1500nm
- 3.8nm @ 2100nm
All SPECTRAL EVOLUTION spectroradiometers calibrated for solar radiance have capabilities for generating a spectral match report for measuring class performance as per IEC60904-9/ASTM E927-05. This is especially useful for measuring the performance of continuous or pulse solar simulators.
Validate the class of any commercially available solar simulator using the SR-3501, SR-1901, SR-2501PT, or SR-1901PT spectroradiometer as per IEC60904-9/ASTM E927-05. The graph was generated using the easy-to-use DARWin SP Data Acquisition and Analysis software included with each spectroradiometer. Built-in software routines automatically provide class status.
LED- Measurement: Rapid one-touch measurements of light emitting diodes can be obtained using the SR-3500 spectroradiometer and the companion DARWin SP Data Acquisition software included with each unit. Here, the SR-3500 was used to measure the irradiance level of a commercially available LED.