Measure Total Solar Reflectance

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

ASTM Compliant

Compliant with ASTM E903, C1549 & E1980.

7 Discrete Spectral 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.

Immediate Data

LCD touch screen for reviewing full data

Fast Collection Time

Measurements take approximately
10 seconds

Safe on Delicate Surfaces

Rubber port ring protects delicate surfaces

Applications

410-Solar-i data is valuable for the following applications:

Cool roofing and green building
Solar Reflectance input for SRI calculation
Radiative heat transfer applications
Space coatings and materials

Touchscreen User Interface

The 410-Solar-i touchscreen interface provides:

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

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

Specular and diffuse reflectance handheld measurement equipment

410-VIS-IR

Solar reflectance/absorptance and thermal emittance

SRI Measurement Services

Solar Reflectance Index measurement services for cool roofing/building