The main function:
Whiteness meter for measuring the brightness of the object, it is widely used in papermaking, textiles, printing, plastics, ceramics, enamels, food, building materials, paints, chemicals, salt and other special body to be measured whiteness of production and commodity inspection departments. Whiteness meter can measure the transparency of the paper, opacity, light scattering and absorption coefficients. In line with GB3978-83: standard illumination and observation lighting conditions. Simulate D65 illumination lighting. Using d / o lighting observation geometry (ISO2469), diffuse ball diameter φ150mm, with light absorber to eliminate the influence of sample specular reflection light. R457 peak wavelength spectral power distribution of the whiteness of the optical system of 457nm, FWHM 44nm; RY optical system complies with GB3979-83: object color measurement method.
Implementation of the standards: ISO 2469 "Paper, paperboard and pulp --- Determination of diffuse reflectance factor", ISO 2470 "paper and paperboard - Determination of whiteness (diffuse / vertical method), ISO 2471" Paper and paperboard --- no Determination of opacity (paper backing) --- the diffuse reflection method ", ISO 9416" paper light scattering and light absorption coefficient of determination (Kubelka-Munk) ", GB / T 7973" Paper, paperboard and pulp measurement of diffuse reflectance factor (diffuse shot / vertical method) ", GB / T 7974" Paper, paperboard and pulp brightness (whiteness) was measured (diffusion / vertical method) ", GB / T 2679" paper transparency assay ", GB / T 1543" paper and paperboard opacity (paper backing) of measurement (diffuse reflection method) ", GB / T 10339" Paper, paperboard and pulp light scattering and light absorption coefficient determination ", GB / T 12911" ink absorption of paper and paperboard Determination ", GB / T 2913" Test methods of plastic whiteness ", GB / T 13025.2" Common test methods, salt industry - Determination of whiteness ", GB / T 5950" building materials and non-metallic mineral products whiteness measurement method ", GB / T 8424.2" Instrumental assessment "textile color fastness test of relative whiteness
Technical Parameters:
Accuracy: ≤0.5%
Resolution: 0.1 / 0.01
Repeatability error: ≤0.1%
Specular reflection error: ≤0.1%
Sample size: test plane ≥Φ30mm or ≥Φ19mm, thickness ≤40mm
Printer: thermal printer
Working environment: temperature (20 ± 10 ° C), humidity <85%
Dimensions: (L × b × h, mm): 260 × 370 × 430mm
Weight: 20kg
