Illumination/Observation System

45/0 method (45 ring-shaped illumination, vertical viewing), Comply with CIE No.15

d/8゜（Diffused illumination, 8゜viewing angle）
SCI / SCE measurement (including specular reflection and eliminating specular reflection measurement mode), including UV / exclusion UV measurement;
Conform to: CIE No.15, ISO7724-1, ASTM E1164,DIN5033

Integrating Sphere Size

Φ 58mm

Φ 48mm

Light Source

Combined LED Source；UV Light Source（Only for BGD 558/3）

Spectroscopic Mode

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Concave Grating

Sensor

Silicon photodiode array

256-pixel dual-array CMOS image sensor

Wavelength Range

400nm~700nm

Wavelength Interval

10nm

Reflectance Range

0~200%

Illuminating/Measuring Aperture

Single Aperture：

MAV（Big Aperture）：Φ8mm/Φ10mm

Single Aperture：

MAV（Big Aperture）：Φ8mm/Φ10mm

Dual Apertures;

MAV（Big Aperture）：8mm/Φ10mm；

SAV（Small Aperture）：Φ4mm/Φ5mm

Measurement Mode

SCE

SCI & SCE

Color Space

CIE LAB，XYZ，Y x y，L C h，CIE LUV，Hunter LAB（Only for BGD 558）

Color Difference Formula

ΔE^*_ab，ΔE^*_uv，ΔE^*₉₄，ΔE^*_cmc(2:1)，ΔE^*_cmc(1:1)，ΔE^*₀₀，ΔE（Hunter and only for BGD 558）

Other Chromaticity Data

WI： ASTM E313，CIE/ISO, AATCC, Hunter；YI：ASTM D1925，ASTM 313；

TI：ASTM E313，CIE/ISO（Only for BGD 558）

Metamerism Index MI；Color Stain；Color Fastness；

Observer

2°/10°

Illumination

D65，A，C，D50，D55，D75，F1，F2（CWF），F3,  F4，F5，F6,  F7（DLF），F8，F9，F10（TPL 5）, F11（TL 84）,  F12（TL 83/U30）

Display Contents

Spectral Value/Graph, Colorimetric Value, Color Difference  Value/Graph, PASS/FAIL Result, Color Offset, Color Simulation（Only for BGD 557） 

Measurement Time

1.5s

About 1.2s（If measure SCI/SCE same time, about 3s）

Repeatability

Spectral reflectance：MAV/SCI，standard deviation within 0.1%（400~700nm：within 0.2%）；
Colorimetric value：Standard deviation within Delta E*ab 0.04 ( white calibration plate measured 30 times at 5 seconds intervals after  white calibration was performed.)

Spectral reflectance：MAV/SCI，standard deviation within 0.1%（400~700nm：within 0.2%）；
Colorimetric value：MAV/SCI，within ΔE*ab 0.04（the average value of whiteboard which was measured 30 times at intervals of 5 seconds after calibration）

Spectral reflectance：MAV/SCI，standard deviation within 0.08%（400~700nm：within 0.18%）；
Colorimetric value：MAV/SCI, within ΔE*ab 0.03（the average value of whiteboard which was measured 30 times at intervals of 5 seconds after calibration）

Inter Instrument Agreement

MAV/SCI，within ΔE*ab 0.2
（Average value of 12 pcs BCRA II series color tiles）

MAV/SCI，within ΔE*ab 0.2
（Average value of 12 pcs BCRA II series color tiles）

MAV/SCI，within ΔE*ab 0.15（Average value of 12 pcs BCRA II series color tiles）

Measurement Mode

Single Measurement，Average Measurement（2~99 times）

Locating Mode

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Camera view locating system

Size（L×W×H）

90mm×77mm×230mm

184mm×77mm×105mm

Weight

About 600g

Battery

Li-ion battery. 5000 times within 8 hours

4 pcs No.5 alkaline batteries (AA alkaline battery); or USB interface as power.

Lamp Life

5 years, more than 3 million measurement.

Display Screen

3.5-inch TFT true color capacitive touch screen

Interface

USB/RS-232；Bluetooth 4.0 Dual Mode（only for BGD 558/3，compatible with 2.1）

Data Memory

1000 Standards, 15000 Samples

1000 Standards， 20000 Samples（A data can include both SCI and SCE）

1000 Standards， 28000 Samples（A data can include both SCI and SCE）

Operating Tem. Range

0~40℃，0~85%RH（No condensation），Elevation: Below 2000 m

Storing Tem. Range

-20~50℃，0~85%RH（No condensation）

Standard Accessory

Power Adapter+Li-ion Battery（for BGD 557）or 4 pcs No.5 alkaline batteries（for BGD 558），Data line，Operating Instruction，CD-ROM（containing management software）、White and black calibration cavity，Protective cover

Optional Accessory

BGD 1390---Special test box for powder

BGD 1393---Mini Printer

BGD 1395---Universal Test Components