Measured Parameter Directional hemispherical reflectance (DHR)
Method Integrated total reflectance in a band for a given angle of incidence
Measured Value Absolute reflectance (0–1), Diffuse Reflectance
Calculated Value Total Solar Reflectance, Solar Absorptance
Wavelength Bands (Optimized) 335–380 / 400–540 / 480–600 / 590–720 / 700–1100 / 1000–1700 / 1700–2500 nm
ASTM Standard(s) C1549 / E903
Angle of Incidence 20° from normal incidence °
Calibration Coupon Specular, Diffuse
Accuracy ±0.02
Repeatability ±0.005 units
Beam Spot Size 0.25 inches
Sample Size and Geometry Flat ≥0.5 in. diameter; Curved ±0.5 in. concave; ±12 in. concave
Sample Temperature -90 ~ 100 °C (ambient or heated/cooled)
Operating Temp 0 ~ 40 °C
Storage Temp -25 ~ 70 °C
Power Source Rechargeable battery (NiMH)
Run Time 2 hours on one battery; battery easily replaced with continuous operation after replacement
VIS-NIR Source Tungsten filament, temperature controlled by user
Weight 4.7 lb
Form Factor / Size 11.5H × 9.0W × 3.7D in (29.21 cm × 22.86 cm × 9.44 cm)
Operator Interface LCD graphics screen, 1/4 VGA, touch screen, software buttons, trigger switch in handle
Diagnostics On-screen status and signal monitor. Signal values stored with data. Raw data collection and display.
Data Format Data files can be opened and post processed with Excel or a text processor
Data Storage Removable SanDisk (SD) card
Export Control ECCN 3A999F