The Spectral Evolution CalibraSpec 4500A spectroradiometer delivers the ultimate performance in spectral measurements stability for a wide variety of applications. Using all thermoelectrically-cooled photodiode arrays, the CalibraSpec 4500A is engineered specifically for the performance demands of calibration transfer applications.
• Drift stability of 0.1% for greater accuracy of long-term stability measurements of integrating spheres and light sources
• A temperature controller maintains the instrument housing at a stable temperature to minimize warm-up time.
• All detector temperatures are integrated into DARWin™ SP Data Acquisition software readout for monitoring
• Automatic integration of all detectors and dark current correction for unparalleled signal-to-noise ratio
• High-transmission fiber optic cable radiometrically to NIST standard.
• Optional radiometrically calibrated optics such as lenses and cosine receptors
Model | CalibraSpec 4500A |
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Spectral Range | 350-2500nm |
Spectral Resolution (FWHM) | 3nm @ 350-1000nm 8nm @ 1500nm 6nm @ 2100nm |
Sampling Bandwidth (nm) | Data output in 1nm increments; 2151 channels reported |
Spectrometer Type | 3 Diffraction Gratings |
Detector(s) | 512-element UV-enhanced TE-cooled Si Array ---------- Two 256-element TE-cooled extended InGaAs arrays |
Calibration | Factory calibrated for radiance and/or irradiance using NIST traceable source (depending upon optics selection) |
Noise Equivalence Radiance
W/cm2/nm/sr
(1.2m fiber optic) | 0.2x10-9 @ 400nm 0.2x10-9 @ 700nm 0.9x10-9 @ 900nm 1.2x10-9 @ 1500nm 1.8x10-9 @ 2100nm |
Stray Light | ≤0.1%; VNIR: <0.03%; SWIR<0.02% |
Software Included | DARWin™ SP Data Acquisition |
Power | 7.5V, 30W |
Dimensions | 12.4"x 8.7"x 4.4" |
Weight | 12.64 lbs |
Interface | USB, Wireless Bluetooth® Connection |
Integration Time | 1 - 1000 ms |
Match Radiance | VNIR: 10 x Solar; SWIR: 2 x Solar |
Wavelength Reproducibility (nm) | 0.1 |
Wavelength Accuracy (nm) | 0.5 |
Automatic Exposure | ✅ |
Shutter for Dark Scans | ✅ |
TTL & Phototriggering for pulsed measurement | No |
