Measure specular, diffuse and total solar reflectance

The 410-Solar Reflectometer conforms to ASTM E903 and C1549, the standard test methods for solar reflectance measurements. Measures reflectance at near-normal incidence for seven spectral bands. The 410-Solar specifies the specular and diffuse components of the total reflectance. Choose from eight solar irradiance functions, including air mass 0, 1, 1.5, and 2.0, to calculate total solar reflectance/absorptance.

ASTM Compliant

Compliant with ASTM E903, E408,
C1549 & E1980.

7 discrete bands

335-380 nm, 400-540 nm, 480-600 nm, 590-720 nm, 700-1100 nm, 1000-1700 nm, 1700-2500 nm.

Multiple solar irradiance functions

New or custom functions can be added to the default options.

Analysis of total reflectance

Identify specular and diffuse components of total reflectance.

Fast Calibration

One minute calibration at start of measurement session

Immediate Data

Touch screen display for data review and management

410-Vis-IR Applications

410-Solar data is valuable for the following applications:

Maintenance of solar fields
Evaluation of mirrors
Cool roofing and green building
Observatory telescope mirrors
Space coatings and materials

Touchscreen User Interface

The 410-Solar touchscreen interface provides:

  • Guided calibration
  • Sample labeling
  • Measurement data display
  • Solar irradiance function selection

More Information

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

Absolute reflectance (0-1)

Calculated Value

Total solar reflectance, solar absorptance, specular reflectance

Total solar reflectance, solar absorptance

Wavelength Bands (microns)1

335-380, 400-540, 480-600, 590-720, 700-1100, 1000-1700, 1700-2500

ASTM Standards

C1549        E1980     E903

Angle of Incidence

20° from normal incidence

Calibration Coupon

Specular, Diffuse

Glazed Ceramic

Accuracy

+/- .02

Repeatability

±.005 units

Beam Spot Size

0.25 inches

0.50 inches

Beam Angle

3° half cone angle

N/A

Measurement Time

10 seconds

7 seconds

Solar Irradiance Functions

Air Mass 0 (AM) Extraterrestrial irradiance (ASTM E490-00)
Hazy sky AM1.5 beam-normal irradiance (ASTM E891-87)
Clear sky AM1 global horizontal irradiance (SMARTS 2.9.5)
Clear sky AM1.5 global irradiance surface tilted 37° (ASTM G173-03)
Clear sky AM1.5 global irradiance surface tilted 20° (ASTM G197-14)
Clear sky AM1.5 global irradiance surface tilted 90° (ASTM G197-14)
Clear sky AM1.5 global horizontal irradiance (SMARTS 2.9.5)
Clear sky AM2.0 global horizontal irradiance (SMARTS 2.9.5)

Sample Size & Geometry

Flat: ≥ 0.5 in. diameter
Curved: 6 in. convex; 12 in. concave

Warm Up Time

90 seconds

Time Between Measurements

2 seconds

Sample Temperature

Ambient or heated/cooled to 0 – 100°C

Operating Temp

0° to 40°C

Run Time

2 hours on one battery. Battery easily replaced with continuous operation after battery replacement.

Power Source

Rechargeable battery (standard environmentally friendly NiMH)

Battery Recharge Time

1 hour

VIS-NIR Source

Tungsten filament, temperature controlled by user

Weight

4.7 lbs

Form Factor / Size

H 11.54”, L 9.04”, W 3.27” (29.31 cm x 22.96 cm x 9.44 cm)

Operator Interface

LCD graphics screen, 1/4 VGA, touch screen, software buttons; trigger switch in handle

Diagnostics

On screen status and signals 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 #3A999.F

Related Products

410-Solar-i

410-LIDAR

Reflectance Measurements