Brightness Color Tester

LB-48A Brightness Color Tester is the professional instrument to test the object of the whitenness,ellowness,chromatic aberration,opacit,transparenc,light scattering coefficient,optical absorption coefficient,and ink absorption value. It is widely applied in paper,cardboard,textile,painting,chemical building materials,plastic,cement,food,salt,ceramics cosmetic etc.

Specific functions of the instrument are as follows:

1. measuring objects reflect color and color, can be displayed or printed: diffuse reflectance factor Rx, Ry, Rz, Y10, X10, tristimulus values Z10, X10, Y10, Z10 chromaticity coordinates; L* a*, b* brightness, hue, chroma C*ab, hue angle h*ab, the main wavelength of D, the purity of excited Pe, color difference Delta E*ab, Delta L*, the degree of chroma difference C*ab, hue difference Delta H*ab, L, a, B, Hunter

2. measuring ISO brightness (blue brightness, R457) and Z brightness (Rz), you can measure the fluorescence whitening degree of fluorescent whitening sample emitted by fluorescent material

3. measurement of CIE whiteness (Ganz whiteness W10 and partial color value TW10)

4. measuring the whiteness of ceramics

5. measure the whiteness of building materials and non-metallic minerals

6. measuring Hunter whiteness WH

7. measure yellowness YI

8. measure the opacity of the sample OP

9. measure the transparency of the sample T

10. measurement of light scattering coefficient S

11. measuring the optical absorption coefficient A

12. measuring ink absorption value

Product features

The instrument is novel in appearance, compact in structure and advanced in circuit design, which effectively ensures the accuracy and stability of measurement data.

Instrument analog D65 illuminator illumination. Using CIE 1964 to add color system and CIE 1976 (L*a*b*) color space color difference formula.

The instrument adopts d/o illumination observation geometry condition. The diameter of the diffusion ball is 150mm, and the diameter of the test hole is 30mm, and an optical absorber is arranged to eliminate the influence of the mirror reflection light of the sample.

With large screen and high pixel LCD module, Chinese display and prompt operation steps display measurement and statistic result, friendly man-machine interface makes instrument operation simple and convenient.

The instrument adds printer and adopts imported thermal printer core, without using ink and ribbon, working without noise, printing speed and so on.

This instrument is equipped with standard RS232 interface, and can communicate with microcomputer software.

The instrument has power off protection, the calibration data will not be lost after power failure.

9 reference samples can be stored.

Technical index

Precision value: chromaticity coordinates 0.0001, the remaining 0.01

Indication: drift less than 0.1%

Stability measurements: 30min, 0.1

Repeatability: Rx, Ry and Rz s 0.10 chromaticity coordinates of S is less than or equal to 0.0010R457 value is less than or equal to 0.10 s

Sample size: test plane is not less than 30mm, the thickness is not more than 40mm

Test description

With uniform sampling equipment from samples cut from standard samples, such as the measurement of whiteness, a specimen is placed on the test hole, R457 test of the top layer of sample diffuse blue reflectance factor, the top of the layer on the bottom of the stack of paper samples, repeat the test second samples, and then use the same method in turn determination of not less than 5 samples. If you want to test the reverse, then fold the paper and repeat the operation.

Note: 1., 30 minutes after the start of the instrument stable, the test before the standard board to calibrate the instrument, if not in the error range, domestic calibration.

2. different test items shall be carried out according to the test requirements specified by the relevant standards.

Applicable standard

ISO 2469 paper, board and pulps -- Determination of diffuse reflectance factor

ISO 2470 paper and paperboard - Determination of whiteness (diffusion / vertical)

ISO 2471 - paper and board - Determination of opacity (paper backing) - diffuse reflectance method

ISO 9416 paper light scattering and determination of optical absorption coefficient (Kubelka-Munk)

ISO 11475 paper and paperboard CIE whiteness determination, D65/10 (outdoor daylight)

GB/T, 7973, paper, board and pulps diffuse reflectance factor (diffusion / vertical)

GB/T 7974 determination of brightness (whiteness) of paper, board and pulps (diffusion / vertical)

GB/T 7975. Determination of colour of paper and paperboard (diffuse reflectance)

GB/T 2679 "determination of paper transparency."

GB/T, 1543. Determination of opacity (paper backing) of paper and paperboard (diffuse reflectance)

GB/T 10339. Determination of light scattering and light absorption coefficients of paper, paperboard and pulps

GB/T, 12911. Determination of absorbency of paper and paperboard ink

GB/T 22880 paper and paperboard CIE whiteness determination, D65/10 (outdoor daylight)

GB/T 9338 "method for the determination of relative whiteness of fluorescent brighteners."

Device parameter

Chinese measurement and control LCD screen life: about 50 thousand hours

Power supply: AC220V + 22V 50Hz 0.5A should be reliably grounded

Overall dimensions (L * w * h): (330 * 264 * 400) mm

Net weight: 23kg