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1. Description:
This brightness meter is mainly used to measure the whiteness of paper, paperboard, paper pulps, pulps of chemical fiber, cotton, chemical fiber, textile, plastic, starch, salt, white cement, porcelain clay and talcum powder, etc. It can also be used to measure the opacity and other optical performance of thin pages.
1.1 Measure the diffuse blue reflectance factor (R457), which is also called "blue brightness" or "ISO brightness".
1.2 Analyze whether the sample material contains fluorescence brightener, and measure the fluorescence brightness produced from fluorescence emission. I. E. Brightness degree.
1.3 Measure the brightness stimulus value Y10 of sample, I. E. Diffuse green reflectance factor Ry.
1.4 Measure the transparency, opacity, optical-absorption coefficient and light-scattering coefficient of samples.
1.5 Measure the ink absorbency of paper and board.
2. Major technical features:
Measure and digital display the whiteness, fluorescence whiteness and opacity (%), etc.
Zero drift
≤ 0.1
Indication drift
≤ 0.1
Indication error
≤ 0.5
Repeatability error
≤ 0.1
Error of specular reflection
≤ 0.1
Sample size
Testing surface is not less than Φ 30mm, thickness of sample is not exceeding 40mm
Power
160-260V, 50Hz, 0.3A
Working environment
Temperature is 0-40ºC, relative humidity is not exceeding 85%.
Size and gross weight
340*260*420mm, 20Kg
Paper Brightness Meter Testing Equipment Cardboard Whiteness Tester
Model NO.: YQ-Z-48B
Origin: China (Mainland)
Paper Brightness Meter Testing Equipment Cardboard Whiteness Tester